Monroe 630 Calculator

HaaTa · 04 Dec 2015, 05:43

Sorry, a bit late today...was playing with my new camera! Going to take some getting used to as it was easier to focus on text with a touch screen.

First off with the new camera, nixie tubes

This Monroe calculator was made in Japan, by what it seems to be Canon. AFAICT the calculator fully works. Uses magnetic reed switches as is typical of calculators of this vintage.

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terrycherry · 04 Dec 2015, 07:35

First to see inside the 1968 Canon calculator. How beautiful about the vacuum tube!
it's expensive to buy and rare to see this variant calculator.

stratokaster · 04 Dec 2015, 10:24

Is it really from 1968? I see the modern Canon logo on the PCB. My Canon A-1 (introduced in 1978) and even my Canon New F-1 (introduced in 1981) still use the "old style" logo.

On second thought, maybe it's not that strange because my Canonet QL17 GIII (introduced in 1972) also uses the modern logo.

andrewjoy · 04 Dec 2015, 12:58

Are they nixie tubes ! In a calculator !

terrycherry · 04 Dec 2015, 15:36

oh, your're right. It could be made in 1988. I didn't look carefully about 6 and 8.

stratokaster wrote: ↑Is it really from 1968? I see the modern Canon logo on the PCB. My Canon A-1 (introduced in 1978) and even my Canon New F-1 (introduced in 1981) still use the "old style" logo.

On second thought, maybe it's not that strange because my Canonet QL17 GIII (introduced in 1972) also uses the modern logo.

HaaTa · 04 Dec 2015, 19:16

Going from the TI chip, I'd say sometime after Week 39 1971.

klikkyklik · 04 Dec 2015, 19:30

Nixies in a calculator. I have never seen that before.

klikkyklik · 04 Dec 2015, 19:35

According to this web site, the Monroe 650 was from 1972, so the 630 being from 1971 is probably accurate (then again, it also states the 620 was from 1972).

http://www.oldcalculatormuseum.com/monroe650.html

cookie · 07 Dec 2015, 10:55

That thing could be straigt outta Fallout!