Input device for e.g. pocket computer, has keypad with multi-direction keys utilized for mnemonic based keying, where one key is situated at left and other at right, and each key activates respective inputs

摘要

The device has a keypad comprising multi-direction keys utilized for mnemonic-based keying, where one key is situated at left and other key at right, and both keys have sixteen bifurcations. The key on left-hand side activates the storage of 9 inputs carrying rows of an input combination table identified negatively. The key on right-hand side activates 16 inputs carrying columns identified positively.