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Keyboard Builders' Digest / Keyboard Spotting

Librascope Tactical Computer Terminal

This TCT AN/UYQ-30 is probably one of the very few terminals out there meeting nuclear survivability requirements. Posted by pburgomaster.

Literally a battlestation.

This fully militarized tactical computer terminal, designed and manufactured by the Librascope Corporation, is "a general purpose data processing, display, and communication terminal for Army field use at all echelons in a variety of highly mobile tactical applications".

The brochure from 1988 is pure gold, check it out at:

Display/Keyboard Processor unit: 130 pounds.

The Keyboard utilizes elastomeric construction and is rain-proof in the operational position. It folds upward to protect the Display face in transit. A standard ASCII character set is featured with the numerics placed to one side. A separate set of cursor control switches is provided. [...] Processor Control Switches, Input/Output Control Switches, and Voice Channel Selection Switches are also located on the keyboard (source).

8 megabytes magnetic bubble memory: 80 pounds.

Environmental specifications

Altitude: operation to 10,000 ft, transport to 50,000 ft.

Temperature: operational -45° to 60°C, storage -57° to 71°C.


Nuclear: survivable.

Published on Sun 21st Nov 2021. Featured in KBD #53 (source).


Lear Siegler ADM-2

Vintage Lear Siegler ADM-2 keyboard (circa 1974) with Key Tronic Foam & Foil switches. Posted by jacksonh22.



ProgressivePear found a Viewdata terminal at work.



The IBM Lighted Program Function Keyboard (LPFK) was used as an extra input device when doing computer aided design on the IBM RS/6000 series of machines. Posted by epearl-tv.