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Programmable Key/Display/Switch/Device Disclosure Number: IPCOM000069869D
Original Publication Date: 1978-Jul-01
Included in the Prior Art Database: 2005-Feb-21

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Related People

Bigbie, SE Kennedy, PJ Merckel, GU [+details]


A method is described for altering the label of a keyboard switch element via program control. It is frequently desired to change the label on a keyboard switch. Examples of this include the IBM 3767 Keyboard and its button decals, and the IBM 2741 terminal and its button decals for A Programming Language (APL). Many hand-held calculators solve this problem by printing multiple labels in various colors on and around the keys, as in Fig. 1, which shows a portion of such a calculator. This reduces the number of keys and allows for the overall package to remain small; however, operator confusion is increased.