MULTI-STATUS MULTI-FUNCTIONAL DATA PROCESSING KEY AND KEY ARRAY

摘要

TITLE OF INVENTION: MULTI-STATUS MULTI-FUNCTION DATA PROCESSING KEY AND KEY ARRAY: Multi-status data entry key and keyboard capable of a one-to-one correspondence between each key status and a pre-assigned signal or state, with the neutral position or status being one of the states. Each non-neutral key status is associated with a unique pre-determined signal and corresponds uniquely to a specific symbol, function or operation. The implementation of this invention in telephones, computers, cash registers and other devices is shown. Its implementation in telcphones is extensively covered.