List of Vintage Hand-held Calculators
&
Addendum to 'The Collector's Guide to Pocket Calculators'
"0-9
& A–B"
The Collector's Guide to Pocket Calculators lists over 1,500 models of early pocket calculators from over 220 companies and provides an excellent source of information on early hand-held calculators. However, since it was published further models have come to light and are listed here.
If you have an early pocket calculator (from the 1970s with LED, vacuum fluorescent, discharge, or
early LCD display, and battery powered) which is not in The Collector's Guide, please email the details as in the list below for inclusion here.
Details for each calculator are required in the format used in the book, and below:
Manufacturer or Trading Company, Model Name or Number (there may be more than one), Functions, Display Type, Battery type (and if
rechargeable), Size, Country of Manufacture, any Interesting Features.
A small frontal photograph (jpeg format, about 600 pixels max dimension) of each would be useful and will be included with the details if of good quality.
Please email with details.
New Calculators
Latest Update - latest additions have the date added.
Displays are 8-digits unless described otherwise.
Go to 0-9 A B
0 - 9
1000PR (This calculator is a bit of a puzzle - this may be the model number.)
- 1000PR, 4-function, %, square root, green VFD, 4-AA rep batt., 84x132x30mm / 3.3x5.2x1.2". Photo
.
A
Abatron (from Business Electronics Ltd., a British Company).
- 152, 4-function, %, square root, square, reciprocal, green VFD, 4-AAA rep. batt.
- 800, 4-function, red LED, 6-AA rep. batt.
- 801, 4-function, red LED. Photo. Featured on British calculator site.
- 802, 4-function, red LED. Featured on British calculator site.
- 803, listed in book. Photo. Featured on British calculator site.
- 804, 4-function, %. Photo. Featured on British calculator site.
- 805, 4-function, memory, red LED. Photo. Featured on British calculator site.
- 808, Scientific, memory, red LED. Photo. Featured on British calculator site.
- Mini, 4-function, %, memory, red LED, 9v PP3, Hong Kong.
Abatronix
- CA-6 (aka #676), 4-function, 6 digits red LED, 9v, U.S.A., available in black and cream.
ABC
ABM (Advanced Business Machines, British marketing company)
- 800, known from ad., resembles Rapid Data Rapidman 800, ~1972.
- diamant-4001, 4-function, %, square root, blue VFD, 2-AA rep. batt.
ABRAXAS
- ABRAXAS, 4-function, %, red LED, rechargeable battery module plugs into AC. Featured
calculator.
Academy
- Academy, 4-function, %, memory, red LED, 9v PP3 rep. batt., Hong Kong, a 'Standard type 1' calculator.
Photo.
- AJ1S, 4-function, %, memory, red LED, 9v PP3 rep. batt., Hong Kong.
ACC
- 811A, 4-function, %, square root, memory, blue VFD, 4-AA rep. batt., Taiwan.
Accuron (Accuron Sendirian Berhad, Kuala Lumpur, Malaysia. Marketed in Europe.)#
- 193, 4 function, %, green VFD, 2- AA rep. batt., 59x84x12mm/ 2.3x3.3x0.5", Malaysia, c1977.
- 194, 4 function, %, memory, green VFD, 2- AA rep. batt., 59x84x12mm/ 2.3x3.3x0.5", Malaysia, c1977.
- 196, scientific, scientific display with 5-digit mantissa & 2 digit exponent green VFD, 2- AA rep. batt., 59x84x12mm/
2.3x3.3x0.5", Malaysia, c1977.
- 198, scientific, scientific display with 5-digit mantissa & 2 digit exponent green VFD, 2- AA rep. batt., 59x84x12mm/
2.3x3.3x0.5", Malaysia, c1977.
- 600, 4 function, RPN, red LED, 9v (PP3) rep. batt., 57x102mm/ 2.25x4", Malaysia. Photo.
- 731, 4-function, %, memory, red LED, 9v (PP3) rep. batt., 64x221x24mm / 2.5x8.7x0.9", Malaysia, c1977.
- 800, 4-function, red LED.
- 810M, 4-function, %, green fluor, 9v (PP3) rep. batt., 3.25x4.5", has aluminum back panel which slides open to allow battery replacement (like some Adlers). Photo.
- 831, 4-function, memory, green VFD, 113x180x35mm / 4.4x7.1x1.4", Malaysia, c1975.
- 831M, listed in book.
- 841, 4-function, %, memory, red LED, 9v (PP3) rep. batt., 68x120x22mm / 6.7x4.75x0.9", Malaysia, c1975. Photo
.
- 850, 4-function, %, green VFD, 113x180x35mm / 4.4x7.1x1.4", Malaysia, c1975.
- 893, 4-function, %, green VFD, 2- AA rep. batt., 78x129x23mm / 3.1x5.1x0.9", Malaysia, c1975.
- 894, 4-function, %, memory, green VFD, 3- AA rep. batt., 78x129x23mm / 3.1x5.1x0.9", Malaysia, c1975.
- 895, 4-function, %, memory, green VFD, 4- AA rep. batt., 83x129x25mm / 3.25x5.1x1.0", Malaysia, c1975.
- 896, scientific, green VFD, 3- AA rep. batt., 78x129x23mm / 3.1x5.1x0.9", Malaysia, c1975.
- 930, 4-function, %, memory, sq rt, square, red LED, 9v (PP3) rep. batt., 66x114x21mm / 2.6x4.5x0.8", Malaysia, c1977.
- 931, 4-function, %, memory, red LED, 9v (PP3) rep. batt., 66x114x21mm / 2.6x4.5x0.8", Malaysia, c1977.
- 961, 4-function, %, sq rt, green VFD, 2- AA rep. batt., 66x114x21mm / 2.6x4.5x0.8", Malaysia, c1977.
- 971, 4-function, %, memory, sq rt, green VFD, 2- AA rep. batt., 66x114x21mm / 2.6x4.5x0.8", Malaysia, c1977.
- 976, 4-function, %, memory, sq rt, square, reciprocal, green VFD, 2- AA rep batt., 66x114x21mm / 2.6x4.5x0.8", Malaysia, c1977.
- 996, scientific, scientific display with 5-digit mantissa & 2 digit exponent green VFD, 2- AA rep batt., 66x114x21mm /
2.6x4.5x0.8", Malaysia, c1977.
- 997, scientific, red LED, 9v (PP3) rep. batt., 66x114x21mm / 2.6x4.5x0.8", Malaysia, c1977.
- Executive, 4-function, %, memory, red LED, 9v (PP3) rep. batt., 65x113x23mm / 2.6x4.4x0.9", Malaysia, c1976. Photo.
- V, 4-function, %, memory, 9v PP3 rep. batt., Malaysia.
Ace
- MAC-19, Scientific, blue VFD, 4- AA rep. batt., 90x149x29mm / 3.5x5.9x1.1", Japan, a re-badged Casio fx-19. Photo
.
ADDIMULT
- ADDIMULT, 4-function, %, memory, blue VFD, 2-AA rep. batt., seen in 'Filofax'-type personal organiser.
Addmaster
Addo (Swedish company)
- 9215, 4-function, %, memory, red LED, 9v PP3 rep. batt., Sweden.
- 9218, listed in book.
- 9364, listed in book. Featured calculator.
Addometer
Adler (European market calculator, models similar to Triumph, and some similar to Imperial and Royal models)
- 60, listed in book. Photo.
- 80, listed in book.
- 80C, listed in book.
- 80CS aka EC 40, 4-function, %, sq funct, recip, green VFD, 2-AA rep batt, 3.0x5.75", similar case to Royal 81CS,
Japan.
- 80D aka EC 80D, 4-function, green VFD, 4-AA rep batt, Japan, horizontal style unusual for Adler. Photo.
- 80S, 4-function, %, sq rt, green VFD, 4-AA rep batt.
- 81, listed in book. Featured on sister site
.
- 81C, listed in book.
- 81CS aka EC 41, 4-func, %, mem, sq rt, 8-digits green VFD, 2x AA rep batt, 78x146x18mm / 3x6x0.75", Japan. Photo.
- 81S, listed in book. Photo.
- 81SN, same as Triumph 81SN (this model was bought new in Jan 1980). Photo.
- 82M, listed in book. Photo.
- 84F, listed in book.
- 85, ANITA 851 relabelled for ADLER. Photo. Featured on sister site.
- 88T, known from a calculator comparison chart, scientific, 8 digits, rechargeable batt., ~1975.
- 88TS aka EC 42, scientific, green VFD, Japan.
- 109 T aka EC 28A, scientific, green VFD, 4-AA rep. batt., Japan.
- 121C, listed in book. Photo.
- 816AD, known from a price list, AC & batt, ~1975.
- Lady aka EC 20-L, 4 function, %, green VFD, 3-AAA, 62x92x22mm / 2.4x3.6x0.9", Japan. Photo. Featured calculator.
- PD3, 4-function, %, memory, 10 digits green VFD & printer, sealed rech. batt., Japan.
- Sir aka EC 20-S, 4 function, %, green VFD, 3-AAA, 65x95x20mm / 2.6x3.75x0.8", Japan. Photo. Featured calculator.
Adman (European market calculator)
- 121, 4 function, %, memory, sq rt., green VFD, 2-AA rep. batt., 76x138x20mm / 3.0x5.4x0.8", Singapore. Photo
.
- 141, 4-function, %, square root, memory, blue VFD, 2-AA rep. batt.
- 3000, 4-funct, %, memory, red LED, 9V rep. batt., a 'Standard Type 1' model.
- L-0831T, 4-funct, %, memory, red LED, 9V rep. batt., 3.0x5.0", Singapore. Photo.
Advance Electronics Co. Ltd. (Taiwan. See also Ruby.)
- Advance 800, 4-function, %, square root, 8 digits, green VFD, 4-AA rep. batt., Taiwan.
- Advance 800M, 4-function, %, square root, memory, green VFD, 3-AA rep batt., Taiwan.
- Advance 800P, 4-function, %, square root, green VFD, 3-AA rep batt., Taiwan.
Advance Electronics Ltd. (British company.)
- 80. Photo. Featured on British calculator site.
- 88, 4-function, %, 2 memories, square root, red LED, 5-AA rechargeable cells, 3.25 x 6", calculates to 16 digits, least sig. 8 digits revealed using <-> key, ~1975. Photo. Featured on
British calculator site.
- Mini Executive. Featured on British calculator site
.
Advanced Electronics (U.S. company)
Advanco
- 888M, 4-function, % memory, red LED, 9v PP3 rep. batt., Hong Kong.
AFCO (Note: logo seen on JCE models)
- TE-8M, 4-function, red LED.
AGETRON
- ML-8, 4-function, %, red LED, 4-AA rechargeable batteries.
Agilis (European market calculator)
- 111, 4 function, %, memory, green VFD. Jan. 24.
- 121, 4 function, %, sq rt, memory, blue VFD.
- 141, 4 function, %, sq rt, memory, blue VFD, 2-AA rep. batt. Jan. 23.
- 505, 4 function, %, sq rt, square, reciprocal, memory, green VFD, 2-AA rep. batt. Jan. 24.
- 515, 4 function, %, sq rt, square, reciprocal, memory.
- 545, 4 function, %, sq funct, recip, pi, gn chg, memory, VFD, 3-AAA rep batt, 2.75x5.25".
AGS (AGS Electronic - No information available about this company. If you have any information please get in touch.)
- AGS-8, 4-function, green VFD, 4-AA rep. batt.
- AGS-9, 4-function, %, green VFD, 3-AAA rep. batt., 86x134x30mm / 3.4x5.25x1.2", Japan. Photo
.
- AGS-10, 4-function, %, memory, green VFD, 4-AA rep. batt., Japan. Photo.
- AGS-14, 4-function, %, square root, reciprocal, memory, green VFD, 4-AA rep. batt., Japan.
- AGS-15, 4-function, %, square root, square, reciprocal, memory, green VFD, Hong Kong. Photo.
Ajax (from British marketing company Acme Electric (Finsbury) Ltd.)
- AJAX (no model number), 4-function, %, red LED, PP3 rep batt, 66x126x22mm / 2.6x5.0x0.9". Photo
. Featured on British calculator site.
- AJAX (no model number but serial numbers begin with 2200-, so this may be the model number), 4-function, red LED, 9v PP3 rep. batt., similar to the Radofin 2200.
- 88, 4-function, %, red LED, PP3 rep. batt., Hong Kong. Jan. 24.
- 99, 4-function, %, memory, red LED, PP3 rep. batt., 68x132x23mm / 2.7x5.2x0.9", Hong Kong. Photo. Featured on British calculator site.
- 1200, 4-function, red LED, membrane keypad, England, similar to Triton 1200. Jan. 23.
- 2500, 4-function, %, memory, red LED, 4-AA rep batt, 78x139x37mm / 3.1x5.5x1.5", Hong Kong. Photo
. Featured on British calculator site.
- Litronix 1100, the label on the back is marked for distribution by Ajax. Featured on British calculator site.
Alco (U.S. company)
- 888, listed in book.
- 895, listed in book.
- Mickey Math, LED display, listed in book.
- Mickey Math (aka Model 18), 4-funct, blue VFD, 2-AA rep batt, 189x189x27mm / 7.5x7.5x1.1". Photo
. Featured calculator.
Alcor (ALCO MARKETING, Flushing, N.Y.)
- 600, 4-function, %, red LED, 3-AA rep. batt.
- 730, 4-function, %, memory, display key, red LED, 9v PP3 rep. batt.
- 731, 4-function, %, square root, square, reciprocal, memory, red LED, 9v PP3 rep. batt., Hong Kong.
- 888, 4-function, %, square root, green VFD, 4-AA rep. batt.
- 893SR, 4-function, %, square root, square, reciprocal, memory, green VFD, 3-AA rep. batt., Korea.
- Grand Prix
4-funct, %, display key, 8 digit red LED, small removable sealed batt pack which plugs directly into wall outlet, 2.0x3.5", similar to Monte Carlo, Hong Kong. Photo
.
Alectronica
Allianz
ALTRONIC
- 808, 4-function, %, memory, red LED, 9v PP3 rep. batt., Singapore.
Amelia
- Scientific 2001, scientific, red LED.
Amen Electronic Industry Co., Ltd.
- Am 800, 4-function, red LED, 4-AA rep. batt., made in R.O.C. Jan. 24.
American (U.S. company)
- American, listed in book. Photo.
- American-1776, listed in book. Photo.
- L180, listed in book.
- M-26, listed in book. Photo.
aml (aml Distributors Ltd, London. British marketing company)
- LE-8 "TRAVELLER", 4-function, red LED (unusually large), 6- AA rep. batt., 70x141x35mm / 2.75x5.6x1.4", Japan. Photo. Featured on British calculator site.
- LE-8C, listed in book. Photo. Featured on British calculator site. Photo.
- M-48, 4-function, %, memory, square root, green VFD, 4- AA rep. batt., 77x140x30mm / 3.0x5.5x1.2", Japan. Photo
. Featured on British calculator site.
A.M.P.
- A.M.P.-257, 4-function, %, red LED.
Anita (British Company, bought by Rockwell)
Note that the sister site to this one www.anita-calculators.info is dedicated to Anita calculators.
- 102, similar to Unicom 102. Photo. Featured on sister site
.
- 201. Featured on sister site.
- 202/SR, scientific, green fluorescent, 4-AA rep batt, 3.2x6.1", made by Rockwell, country of manufacture unknown, similar to Rockwell 202. Featured on sister site.
- 810, 4 function, red LED, 3-AA rep batt, 69x118x24mm/2.8x4.7x1.0, England.
- 811, listed in book. Featured on sister site.
- 831. Featured on sister site.
- 841, Scientific, red LED, 3-AA rep batt, 2.8x4.7", Sumlock Comptometer Ltd., England, ~1975. Featured on sister site.
- 851, 4 function & metric conversion, red LED, 3-AA rep batt, 2.7x4.6", made in England, ~1975. Featured on sister site.
- 861, financial, red LED, 3x AA rep batt, 2.75x4.7", England. Featured on sister site
.
- 1011B LSI, 4-function, %, memory, RPN, 10 digits, Nixie tubes, sealed rechargeable battery module, 8.75x6.5", England, 1971. Featured on sister site.
- 8011, 4-function, %, memory, similar to 811 but with green VFD, Fi-cord International Ltd., Yugoslavia, ~1977.
Featured on sister site.
- 8031, 4-function, %, memory, square root, similar to 831 but with green VFD, Fi-cord International Ltd., Yugoslavia, ~1977. Featured on sister site.
- 8041, Scientific, similar to 841 but with green VFD, Fi-cord International Ltd., Yugoslavia, ~1977. Featured on sister site.
- 8051, Metric conversion, similar to 851 but with green VFD, Fi-cord International Ltd., Yugoslavia, ~1977. Featured on sister site.
APCO (Witco Ltd.)
- EC-808, 4-function, red LED, 5-AA rep. or rech. batt., Japan. Photo.
APF (U.S. company)
- KEL-CO by apf 'TROTTING/PACING COMPUTER' aka RS-2, functions for horse trotting and pacing, 4-functions, %, red LED, 9v
PP3 rep. batt., Hong Kong.
- M103PD, 4-function, %, memory, green VFD & printer, 4-AA rep. batt., Japan.
- M106, 4-function, %, memory, 10-digits VFD, 2-C rep. batt., Taiwan, small desktop form.
- Mathemagician, calculator game and teaching aid.
- Mark III, 4-function, red LED, 6-AA rech. batt., 81x133x38mm / 3.2x5.2x1.5", c1973, Japan. Photo
, inside.
- Mark V, listed in book. Featured calculator.
- Mark VI, listed in book.
- Mark 10, listed in book. Photo.
- Mark 14, listed in book. Photo.
- Mark 15, listed in book.
- Mark 21, listed in book. Photo.
- Mark 22, listed in book.
- Mark 23, listed in book.
- Mark 24, listed in book.
- Mark 25, listed in book. Photo.
- Mark 26, listed in book. Photo.
- Mark 27, listed in book. Photo.
- Mark 28, listed in book.
- Mark 30, listed in book.
- Mark 31, listed in book.
- Mark 32, listed in book. Photo.
- Mark 34, listed in book.
- Mark 40, listed in book. Photo.
- Mark 41, listed in book.
- Mark 42, listed in book. Photo.
- Mark 43, listed in book. Photo.
- Mark 50, listed in book.
- Mark 51, listed in book.
- Mark 55, listed in book.
- Mark 56, listed in book.
- Mark 60, listed in book.
- Mark 61 (aka "Executive"), listed in book. Photo
.
- Mark 61S, listed in book.
- Mark 62, listed in book.
- Mark 64, listed in book.
- Mark 65, listed in book.
- Mark 65R, listed in book. Photo.
- Mark 66R, listed in book.
- Mark 68R, listed in book.
- Mark 70, listed in book.
- Mark 71, 4-functions, %, square root, memory, red LED, PP3 rep. batt., 127x76 mm / 5x2.98", Hong Kong. Photo
.
- Mark 72, listed in book.
- Mark 73, listed in book.
- Mark 74, listed in book. Photo.
- Mark 82, listed in book.
- Mark 84, listed in book. Photo.
- Mark 85, listed in book.
- Mark 86, listed in book.
- Mark 88, listed in book.
- Mark 90, listed in book.
- Mark 2000, 4-func, %, sq. rt., yellow LCD.
- RS-1 aka KEL-CO "HORSE RACING CLASS COMPUTER", listed in book. Photo.
- RS-2, listed in book.
APH (American Printing House for the Blind, Inc.)
Apollo
- Apollo (aka ARC-8200NC), listed in book. Photo.
- Apollo II (aka NRC-9270), 4-funct, red LED, 4-AA rech. batt, 127x73x25mm / 5.0x2.875x1", interesting case design, date codes on TI IC chips are late mid-1972, "NRC New
York", made in Japan. The circuit board is marked "TEAL HEC-8S" indicating that this calculator was made by TEAL, similar to the Power calculator. Photo, inside.
Argyle (from Spiegel, U.S. company)
- Mark III, listed in book.
- Mark 6, 4-function, %, memory, blue VFD, 4-AA rep batt, Japan.
- Mark 10 / MEMORY, 4-function, %, memory, blue VFD.
Aries (U.S. company)
Aristo (German company)
- M16 4-funct, mem, %, red LED, 9V rep batt, 2.75x5.25" c1977, Germany. Photo.
- M27, listed in book.
- M36, listed in book.
- M42S, 4-func, %, mem, sq rt, green VFD, 2x AA rep batt, Germany.
- M64, listed in book. Photo. Featured calculator.
- M65, listed in book.
- M66, 4-function, %, sq. rt., square, reciprocal, memory, red LED, Germany.
- M66S, 4-function, %, sq. rt., memory, green VFD, 2x AA rep batt, 76x151x18mm / 3x6x0.7", Germany. Photo
. Featured calculator.
- M75, listed in book.
- M76S, scientific, green VFD, Germany.
- M80, listed in book.
- M85, listed in book.
- M85 S, scientific functions, VFD.
- parat, 4-function, memory, red LED, 9V rep batt, 2.75x5" (6.7x13.0 cm), Germany.
- R 4000, 4-function, memory, 10 digits blue VFD, 2-D rep. batt., Japan, miniature desktop style.
- top, 4-function, %, red LED, 9v PP3 rep. batt., Germany.
- top S, 4-function, %, red LED, Germany.
- unilog, scientific functions, red LED, 9v PP3 rep. batt., Germany.
- unilog S, scientific functions, red LED, 9V rep batt, 2.75x5" (6.7x13.0 cm), Germany.
Arizona (Arizona Digital Corporation, Phoenix, Arizona, U.S.A.)
- CB20, red LED, calculator in wallet, 165x75mm / 6.5x3".
- Check Tronic, 4-function, red LED, check account calculator in wallet, retains the balance when the calculator is turned off. Photo. Featured calculator.
ASAKI
- AE-8, 4-function, %, red LED, sealed rechargeable batteries, Korea.
- SR-40, 4-function, %, square root, square, reciprocal, memory, blue VFD.
ATAIO
ATEX
- ATEX no model number, 4-function, red LED, U.S.A., similar to JCE Mark II but in black.
Atlas (Munich, Germany)
- R 100, 4-function, %, square root, memory, green VFD.
- R 200, 4-function, %, square root, square, memory, blue VFD, 2-AA rep. batt.
- R 300, scientific, blue VFD.
- R300A, listed in book.
- R2000, scientific, 8-digits mantissa & 2-digits exponent green VFD.
- R3000, scientific, blue VFD, 2-AA rep. batt. Jan. 24.
Atlas Rand (U.S. - See also Berkey and Keystone)
- 240, listed in book. Featured calculator.
- 260, listed in book.
- 290, 4-function, memory, square root, amber gas-discharge, rech. batt. Photo.
audio sonic
- audio sonic, 4-function, red LED, 9v PP3 rep. batt., Hong Kong.
- 750, 4-function, %, red LED.
Aurora
- DC10, listed in book. Photo.
AUTO-MATH
- MK-800, 4-function, green VFD, 4-AA rep. batt., Taiwan.
Avatar (see Litronix)
Aven
B
Baltimore
- UniMark 8004, 4-function, %, square root, Pi, blue-green VFD, 2-AA rep. batt., Japan, see also UniMark models. Jan. 24.
Baltronic
Barclay
- 121, 4-function, %, memory, square root, green VFD, 2-AA rep. batt.
- 808, 4-function, %, memory, red LED.
BARROQ (Spanish company)
- F-40, 4-function, %, square root, Spain.
- F-80, 4-function, %, square root, red LED, 5-AA rep. batt., red LED, 88x143x41mm / 3.5x5.6x1.6", Spain, main ic. Mostek MS5020B (here date coded 1974 week 4), one circuit board marked "TRQ". Photo, inside.
Bashaw (U.S. company)
BattlestaR GALACTICA
- BattlestaR GALACTICA, 4-function, red LED, PP3 rep. batt., Hong Kong, in the shape of a Cyclon character from the movie. Jan. 24.
beda (BEDA INC., 1500 Lawrence Dr., Newbury Park, California, U.S.A. This is the same address as RES, Radient Energy Systems.)
- GT, 4-function, green VFD in separate tubes, U.S.A., similar to RES Mark IX.
BELAIR
- Calculator Watch, 4-function, time, date, red LED, 4-button cells, similar to Compuchron calculator watch.
Belltronic
- '76, 4-function, red LED, PP3 rep batt, 82x154x28mm / 3.2x6x1.1", Hong Kong, chip CT CT5002 (7252), similar to Caltronic 606. Photo 1, Photo 2.
Benkson (Hong Kong)
- C1, 4-function, red LED, 57x113x18mm / 2.25x4.4x0.7", Hong Kong, small size similar to the small Sinclair models. Photo.
BenRoss
- ECL-81, 4-function, blue VFD, Japan.
- K-80X, 4-function, blue VFD, 120x220x35mm / 4.7x8.7x1.4", Japan, similar to models manufactured by Teal. Photo.
Berkey (2 Keystone Place, Paramus, New Jersey, U.S.A. - See also Keystone)
- 100, listed in book. Featured calculator.
- 350, listed in book. Featured calculator.
- 370, 4-function, amber gas discharge.
- 2030, 4-function, %, memory.
- 4000, 4-function, %, memory, amber gas discharge, rech. batt., U.S.A.
- 4030, listed in book. Photo.
Binatone (British marketing company)
- 02 4236, 4-function, %, memory, blue VFD.
- 02 4252, 4-function, %, green VFD, 78x145x29mm / 3x5.7x1.1", Singapore, c1975. Featured on British calculator site.
- 02/4503, red LED.
- Brainwave, 4-function, %, memory, red LED, 70x140x24mm / 2.75x5.5x0.9", c1976, Singapore. Featured on British calculator site.
- CADET, 4-function, %, memory, VFD, 72x125x19mm / 2.8x4.9x0.75". Featured on British calculator site. Jan 12.
- Junior Slide Rule, 4-function, %, square root, square, reciprocal, memory, green VFD, 3-AA rep. batt.
- Mastermind, 4-function, %, memory, sq. rt, PP3 rep. batt., 67x125x24mm / 2.6x4.9x0.9", Singapore. Featured on British calculator site.
- Mastermind MK II (aka 02/4732), 4-function, %, square root,
memory, blue VFD, Singapore.
- Mastermind MK 3, 4-function, square root, memory, a "Standard Type 2" model, with green VFD display.
- Memory, 4-function, %, memory, red LED, 9v PP3 rep. batt., version of the "standard type 1".
- MEMORYMASTER (aka 02-4236), 4-function, %, memory, blue VFD, 4-AA rep. batt., 80x147x29mm
/ 3.1x5.8x1.1", Singapore. Featured on British calculator site.
- President (aka 02-4309), 4-function, %, square root, memory, green fluorescent, 2-AA rep
batt, 83x138x20mm / 3.3x5.4x0.8", Taiwan. Featured on British calculator site.
- P-805, 4-function, %, green VFD, 1-AA rep. batt., Singapore.
- Scientific Slide Rule, scientific, green VFD, 3-AA rep. batt., 80x150x34mm / 3.1x5.9x1.3".
Featured on British calculator site.
- Senior Slide Rule, scientific, 8-digits mantissa & 2 digits exponent green VFD, 3-AA rep. batt., Taiwan.
- Super-thin, listed in book.
BMB (Business Machines Breschi, Italian company)
- 088, 4 funct, %, square root, green VFD, Japan. Photo.
- 80 M, 4 funct, %, memory, 2-AA rep. batt., Japan.
- 80 S, 4 funct, %, green VFD, Japan.
- 98 M, 4 funct, %, memory, green VFD, Japan.
- 98MF, 4 funct, %, square root, square, reciprocal, memory, green VFD, Japan.
- 98S, 4 funct, %, square root, pi, sign change, green VFD, 2-AA rep batt, 3.25x5.0", Japan.
- S-25, 4 funct, %, square root, green VFD, 3-AA rep batt. Photo.
- S-26, 4 funct, %, memory, green VFD, 3-AA rep batt.
BMC
- 800PR, 4 function, %, square root, green VFD, 2-AA rep. batt., Japan.
- Mark-88, 4 function, %, memory, square root, square, green VFD, AA rep. batt., Japan. Photo.
- mini 8M, 4 function, %, memory, blue VFD, 2-AA rep. batt., Japan.
BMS (from Eastern Europe)
- 08, 4 function, green VFD, 7.2v sealed rechargeable battery, same as Royal RC 80.
- 112, 4 function, %, mem, square root, square, 12 digit green VFD, 4-AA rep batt, 185x140x40mm /7.3x5.5x1.6". Photo
.
- 818 M 'SLIDE RULE', 4 function, %, square root, square, memory, green VFD, 3-AA rep. batt., rear lable marked "Modell SILVER-REED 82S".
- SC56, scientific, 12 digit green VFD. Photo.
Bohn (U.S.)
- Instant, listed in book. Photo.
- Omnitrex, listed in book. Photo.
- Omnitrex M, listed in book.
- Omnitrex SR1, listed in book.
Bohsei
- DT10, listed in book.
- 110, 4-function, %, sq rt, green VFD, 2- AA rep. batt.
- 140, listed in book. Photo.
- 1000, listed in book.
- 3000, listed in book. Photo. See also the "Standard Type 1 Calculator" page.
BOLEK - See Elwro
Bonark
- 121, 4 function, %, square root, memory, green VFD, 2-AA rep. batt., Singapore.
- 535, 4 function, %, square root, reciprocal, memory, blue VFD, 2-AA rep. batt., Singapore.
BOND
- BOND, 4 function, %, 8 digits, red LED, 9v (PP3), 62x98x21mm / 2.4x3.9x0.8", tiny LED calculator with rechargeable battery pack which plugs straight into an AC socket. Featured Calculator. Photo.
Bontronic
- 2500, 8 digits, red LED, 4 function, %, memory, 9v (PP3), 62x98x21mm / 2.4x3.9x0.8", made in Hong Kong. Photo
.
Boots (British drug store chain).
- 224 Memory, re-badged Casio H-1. Photo. Featured on British calculator site.
- 424 SCIENTIFIC, Scientific, green fluorescent, 2-AA rep batt, 3.3x5.7", Made in Japan, (re-badged Casio fx-21). Photo. Featured on British calculator site
.
- 425 SCIENTIFIC, listed in book. Photo. Featured on British calculator site.
- D426, 4-function, %, memory, VFD, 2-D rep. batt., Taiwan, mini-desktop design.
- PD-525, 4-func, %, mem, 8-digits green VFD & thermal printer, 5x AA rep batt, 101x189x47mm / 4x7.5x1.9", Taiwan. Photo. Featured on British calculator site.
Bowmar (U.S. company). Click here for an article on Bowmar calculators.
- Bowmar (the only name on the calculator) aka MM5
(on box), 4-function, %, Memory, red LED, 9v PP3 rep. batt., this is the "Standard 1" calculator design, unusually made in Hong Kong, not U.S.A., c1977.
Photo.
- 901B, listed in book. Featured calculator.
- 901D "Ten", listed in book. Photo.
- 905, listed in book. Photo.
- 90506, listed in book. Photo.
- 90512, listed in book. Photo. Occasionally found labelled "Century Mark IV". These could possibly have been made for sale by another company using the "Century Mark IV" trade name.
- 90601, 4 function, red LED. Photo.
- 90911, listed in book. Photo.
- 91801, listed in book.
- 91802, listed in book.
- MX8 aka 90112, listed in book.
- MX10 aka 90150, listed in book.
- MX20 aka 90901 or Brainchild, listed in book.
- MX25, listed in book. Photo.
- MX35, 4 function, %, red LED, 69x151x20mm / 2.75x5.9x0.75", c1974.
- MX40, listed in book.
- MX50, listed in book. Photo.
- MX55, listed in book. Photo, circuit board.
- MX60, listed in book.
- MX61, listed in book.
- MX70, listed in book. Photo.
- MX75, listed in book. Photo.
- MX80, listed in book.
- MX90, listed in book. Photo.
- MX100 aka 92001, listed in book. Photo.
- MX120, listed in book. Photo 1. Photo 2, showing the attachable, fold-back, keyboard cover.
- MX140, listed in book.
- Century Mark IV, listed in book.
- Count, listed in book.
- Math Mate 1, listed in book.
- Math Mate 2, listed in book. Photo (3rd. digit faulty).
- The Brain, 8-digits blue VFD, similar to Count, made in Taiwan by Qualitron, c1974.
Bradford (Distributed by W.T. Grant Co., New York)
- 8DPS, listed in book. Photo.
Brainmate
- Brainmate 4506 ?, 4-function, %, memory, 4-AA rep. batt., Japan.
Braun (German company)
- 4 955 700 also seen labelled Philips TL Super 80, 4-function, %, square root, memory, green VFD, 2-AA rep. batt.
- 4 955 702, 4-function, %, square root, memory, blue VFD, 2-AA rep. batt.
- ET23, listed in book.
BRDA (Polish company)
- 10U, 4-function, %, square root, memory, red LED, Poland.
- 12U, 4-function, %, memory, red LED, 6-AA rep. Batt., Poland.
BRIGHT
- 8 aka CS-801, 4-function, amber gas-discharge?, 4-AA rep. batt.
Brentwood
- 8, 4-function, blue VFD, 4-AA rep. batt., Japan.
Brinlock (The instruction manual for an apf calculator has "apf BRINLOCK" on the front - relationship between the two not known.)
- 33, 4-function, %, memory, green VFD, 2-AA rep batt, 70x134x24mm / 2.75x5.3x0.9", Hong Kong. Photo
.
- 34, 4-function, %, memory, square, square root, green VFD, 2-AA rep batt, 70x134x24mm / 2.75x5.3x0.9", Hong Kong. Photo.
- 106, 4-function, %, memory, blue fluorescent, 2-D rep. batt., Taiwan, small desktop format machine.
- 806, 4-function, %, memory, square root, green fluorescent. Photo.
- 806MII, 4-function, %, memory, square root, green fluorescent, 2-AA rep batt, 3.0x5.3", country of manufacture unknown. Photo.
Brother (Japanese company)
- 201, 4 function, %, memory, square root, green VFD, 4-AA rep batt, 3.4x5.9", Japan, ~1975. Photo
.
- 202, 4 function, %, memory, square root, green VFD.
- 408, listed in book. Featured calculator.
- 408AD, 4 function, %, sq rt, fluorescent, AA rep batt, Japan. Photo.
- 408AX, listed in book.
- 408AY, listed in book.
- 408AZ, 4-function, %, square root, square, reciprocal, pi, green VFD, 4-AA rep. batt.
- 408C, listed in book.
- 418E, 4-function, %, square root, square, reciprocal, pi, green VFD.
- 508A, listed in book. Photo.
- 508AD, listed in book.
- 508AY, 4-function, %, square root, memory, green VFD.
- 508E, 4-function, %, square root, pi, memory, green VFD.
- 508ER, 4-function, %, square root, memory, green VFD, Japan.
- 508S, listed in book.
- Procal 508Z, 4-function, %, square root, memory, green VFD. Photo.
- 512SR, listed in book.
- 518AD, 4 function, %, memory, square root, green fluorescent, 2-AA rep batt, Japan. Photo
.
- 518AZ, 4 function, %, square root, square, reciprocal, pi, green fluorescent, 4-AA rep batt, Japan.
- 712SR, scientific, 8-digits mantissa & 2 digits exponent green VFD.
- 715SR, scientific, 8-digits mantissa & 2 digits exponent green VFD, 4-AA rep. batt., Japan.
- 725SR, scientific, 8-digits mantissa & 2 digits exponent green VFD.
- 806, 4 function, %, memory, square root, green fluorescent, 2-AA rep batt, 76x135x24mm / 3x5.3x0.9", Japan. Photo.
- 807, listed in book.
- 808, 4-function, %, square root, VFD, Korea.
- 825, 4-function, red LED, unusually for a Japanese company "MADE IN U.S.A."
- 827A, listed in book. Photo.
- 827R, listed in book.
- 861, listed in book.
- 862, listed in book.
- 863, listed in book. Photo.
- 967A, scientific, green VFD, 3-AA rep. batt., Hong Kong.
- M7000, 4-function, %, green VFD, 2-AA rep. batt., Japan.
- M7001, 4-function, %, pi, green VFD, 2-AA rep. batt., Japan.
- M7002, 4-function, %, memory, green VFD, 2-AA rep. batt., Japan.
Brunsviga (German company, latterly owned by Olympia)
- 10 R "Der Braunschweiger", scientific functions, green VFD, horizontal design.
- B22, 4-function, %, memory, square root, green VFD, 4-AA rep. batt., 82x138x25mm / 3.0x5.4x1.0", c1976, similar to Santron models, Taiwan??
Photo, inside.
- EDC-812A, 4-function, %, memory, square root, green VFD, 3-AA rep. batt., Japan. (Produced by the General Corporation,
Kawasaki, Japan, which sold the same model with its own label General Teknika EDC-812A and also produced it for the Interkontinentale Warenhausegruppe which used the label MR800). Photo, rear. Jun. 23.
BTC
- Micro 4, 4-function, %, green fluorescent, 4-AA rep. batt., 76x135x24mm / 3.2x5.3x0.9", zeros in the display are half-height. Photo.
BUBU
- 140 aka CL-140, 4-function, 6-digit green VFD, 4-AA rep. batt., Japan. Jan. 24.
Busicom (Originally, Japanese company, early calcs made in Japan, but company
closed in 1974 and the name was bought by Broughtons of Bristol, UK., which put the Busicom badge on calculators made by others).
- 60DA, listed in book.
- Personal 60DB, 4-function, 6 digits red LED (calculates 12 digits), 4- AA rep. batt., 86x153x42mm / 3.4x6x1.7", Japan, ~1973. Photo (note: display is faulty), inside.
- 80A aka LE-80A "handy", listed in book. Photo. Featured calculator.
- 118B, 4-function, %, memory, square root, green fluorescent, 2-AA rep batt, 3.1x5.0", ~1978, a Broughtons of Bristol model. Featured on British Calculator site.
- 100A aka LE-100A "handy", listed in book. Photo. Featured calculator.
- 120A aka LE-120A "handy", listed in book.
- 120DC aka Executive, listed in book.
- 120S aka LE-120S "handy", listed in book. Photo. Featured calculator.
- 612, 4 function, 6-digit green VFD, 4-AA rep. batt., 84x130x28mm / 3.3x5.1x1.1", Japan. Photo
.
- 801DD, listed in book. Photo.
- Colex 812-SL, 4 function, %, memory, square root, green VFD, rechargeable batteries, 78x143x18mm / 3.1x5.6x0.7" , Hong Kong (made by Colex and badged for Busicom). Photo. Featured on British Calculator site
.
- PA-80S, listed in book.
- TENKO IAJ-122M, see Tenko.
- Unknown model number, 4-function, %, memory, square root, square, green VFD, 2- AA rep. batt., 85x155x25mm / 3.3x6.1x1.0", a Broughtons of Bristol model. Featured on British Calculator site.
- ZENITH LE-80A, 4-function, red LED, 4-N rep. batt., Japan, rear label marked "NIPPON CALCULATING MACHINE CORP" (i.e. Busicom), same as Busicom LE-80A.
Click to go to :
Calculator Book Addendum C-D
Calculator Book Addendum E-I
Calculator Book Addendum J-O
Calculator Book Addendum P-R
Calculator Book Addendum S
Calculator Book Addendum T-Z
Key to Abbreviations
Functions:
4-funct = 4 basic mathematical functions (addition, subtraction, multiplication, division)
sci-funct = scientific or engineering functions (logarithmic and trigonometric functions such as log, sine, and cosine and usually memory, square, pi, etc.)
mem = memory
% = percent function
exp = exponent
paren
= parentheses
pi = pi value
recip = reciprocal
sgn chg = sign change
sq rt = square root
sq funct = square functions (including square and square root)
Battery Type:
button rep batt
= very small, disk-shaped, replaceable batteries commonly termed button-types, used mainly in LCD models.
rep batt = replaceable batteries (such as 9V, AA, C, and N batteries)
rep batt pack = replaceable batteries in a removable pack
sealed batt = rechargeable batteries sealed in the case
sealed batt pack = rechargeable batteries in a removable pack
Display Type:
See the section on Calculator Displays for more detailed information.
Displays have 8 digits unless specified otherwise.
COS-LCD
= Early Liquid Crystal Display from Sharp showing silver digits on a dark background. COS stands for Crystal on Substrate. This display was used as early as October 1973 but eventually was phased out.
fluor = see VFD.
Gas discharge
= Display containing all digits sealed in a single package employing gas discharge to generate light in the same way as a neon lamp. Normally give amber- or orange-colored digits, and typified by the Panaplex® used by a few calculator manufacturers.
LCD
= Liquid Crystal Display, a flat, gray-digit type of display type that uses less power and was embraced by calculator makers by the end of the 1970s. Early versions (used in the early 1970s) by Rockwell and Sharp are included in this guide.
LED
= Light Emitting Diode display (usually red although sometimes a purple filter was used to color the display). LEDs often have small half bubble-like covers over the digits. tube or mini-tube = separate vacuum or fluorescent tube for each digit of display.
Yellow LCD
= Early LCDs had a reliability problem with ultra-violet light and manufacturers used a yellow-colored filter over the normally gray display to remedy that. Refinements in later LCD designs removed the need for the filter.
VFD
= Vacuum Fluorescent Display. Display containing all digits sealed in a single tube generating light from an electrical discharge onto a fluorescent material. The color of the digits is normally green or blue, or somewhere in between.
Other Information:
Klixon keypad
= Texas Instruments Klixon® keypad was one of the earliest keypads and used greatly by Bowmar and a few other early calculator makers. It had the four basic functions and used metal key pads about 1/2" square.
Japan (for example) = country of manufacture as stated on calculator
RPN = Reverse Polish Notation, a method of calculating and user data entry used by HP calculators. A few other manufacturers also used RPN in more limited scale.
"aka" (also known as) is used when there is another name or model variation on the calculator.
"c"
(for example, c1973) is used as "circa," denoting at approximately that time.
A big thanks to Thomas Brockmeier, Richard Brooks, Andrew Davie, Larry Gilbert, Niels Grot, Palmer Hanson, Steve Haynes, Robert King, Kent King, Jeff Lane, Philippe Leckler, Ken Meine, Bob Patton, James Redin, and CB Wilson for
their help.
How to Buy the Book!!!!
Collector's Guide to Pocket Calculators
by Guy Ball and Bruce Flamm
This 204 page, softcover book is the world's most comprehensive listing of electronic pocket calculators from the 1970's, the so-called Golden Age of Pocket Calculators. Over 1,500 known calculators are detailed with
information on features, size, display type, power type, and pricing. In addition, when known, the listing also contains date of sales, original pricing, and country of origin information.
The book features over 470 photographs of various models from over 240 manufacturers around the world (including calculators from lesser-known companies in England, Switzerland, Netherlands, Spain, Germany, Bulgaria, and Russia).
"The Collector's Guide to Pocket Calculators" includes a comprehensive value guide to help you gauge rarity and desirability of the various models -- especially as they
relate to each other.
The book can be purchased for $20.00 plus $5 for USA mailing ($10 for first class mailing to Canada, and $23 to other countries). California residents please add $1.86 state sales tax.
For payment by PayPal, or for additional details and information, contact co-author Guy Ball. Guy is happy to sign the books if asked.
Copyright ©1997 Guy Ball and Bruce Flamm, ©2002-2024 Nigel Tout
Text & photographs copyright, except where stated otherwise, © Nigel Tout 2000-2024.