MIL-STD-1280 1969 Edition, January 28, 1969
Includes all amendments and changes through Cancellation Notice 2, February 20, 1998
Additional Comments: CNCL S/S BY MIL-HDBK-1280
This standard establishes the assignment of the 128 characters of the Military Standard Code for Information Interchange and 54 of the 57 "American" characters of USASCSOCR X3.17-1966 to keys in a typewriter-like keyboard arrangement for application where the textual information has a high alpha content. This standard also establishes the assignment of the same character sets in a typewriter-like keyboard arrangement for application where the textual information usually has a high numeric content. (See Tables I and II.)
The purpose of this standard is to achieve uniformity in keyboard arrangements used by the Department of Defense for the implementation of the Military Standard Code for Information Interchange and Optical Character Recognition in its communication and information processing systems. It is also the purpose of this standard to achieve this uniformity in such a manner that permits the hardware implementation to be of the lowest cost in production and maintenance, to have high reliability in operation, to minimize operator retraining, and to be constructed in the minimum practical area.