G - Physics – 06 – F
Patent
G - Physics
06
F
G06F 3/023 (2006.01)
Patent
CA 2199323
A keyboard for use with a computer. The keyboard has an alphanumeric keypad with alphanumeric keys, a calculator keypad with calculator keys including numeric and arithmetic keys which also function as the standard number pad on a calculator, a keypad matrix, a processor and a bi-directional communications interface. The processor, through the keypad matrix, receives signals indicating actuation of the keys, resolves keystrokes corresponding to the actuated keys, and sends the keystrokes to the computer through the communications interface. The keyboard has a tape mode, a calculator mode and a keyboard mode. The processor, keyboard matrix and calculator keypad act as a discrete calculator when in calculator mode. There is a send key for sending a number active in the calculator to the computer as a series of keystrokes for display on the monitor. In tape mode, the processor sends keystrokes to the computer corresponding to intermediate steps in calculations entered at the calculator keypad. The keyboard has its own LCD display for displaying the calculations of the calculator. There is a software program for use on the computer to display a display window on the monitor. A signal is sent to the keyboard to enter tape mode when the software program becomes active. When the software program is active, keystrokes representing the intermediate steps of the calculation are received from the keyboard and displayed on the monitor. A signal is sent from the computer to the keyboard to exit tape mode when the software program becomes inactive.
Hallman Grant M.
Smith Philip E.
Blake Cassels & Graydon Llp
Keyboard Technologies Inc.
LandOfFree
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