• Country
• United States of America (USA)

• Manufacturer / Brand
• IBM; Armonk, N.Y.

• Year
• 1981

• Category
• Signal Processing and Computing

• Radiomuseum.org ID
• 349321

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 1

• Valves / Tubes

• Number of Transistors
• 7

• Semiconductors
• MJ2955 µA7815 SN7406 2SC2026 2SC1921 2N3904 TDA1170 2SC945 BU408

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 120 or 220-240 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Monochrome Monitor 5151 - IBM; Armonk, N.Y.

• Dimensions (WHD)
• 380 x 280 x 350 mm / 15 x 11 x 13.8 inch

• Notes

• Wikipedia:
  The IBM 5151 is a 12" transistor–transistor logic (TTL) monochrome monitor, shipped with the original IBM Personal Computer for use with the IBM Monochrome Display Adapter.

  The monitor has an 11.5-inch wide CRT (measured diagonally) with 90 degree deflection, etched to reduce glare, with a resolution of 350 horizontal lines and a 50 Hz refresh rate. It uses TTL digital inputs through a 9-pin D-shell connector, being able to display at least three brightness levels, according to the different pin 6 and 7 signals. It is also plugged into the female AC port on the IBM PC power supply, and thus did not have a power switch of its own.

  The IBM 5151 uses the P39 phosphor type, producing a bright green monochrome image intended for displaying high-resolution text. This phosphor has high persistence, which decreases display flicker but causes smearing when the image changes.

• Net weight (2.2 lb = 1 kg)
• 7.590 kg / 16 lb 11.5 oz (16.718 lb)

• Literature/Schematics (1)
• - - Manufacturers Literature (IBM PC Hardware Reference Library)

• Author
• Model page created by Heribert Jung. See "Data change" for further contributors.

• Other Models

• Here you find 18 models, 18 with images and 12 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from IBM; Armonk, N.Y.