Calculator device for enabling a keypad to function as both a keypad and a calculator
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jun 21, 2005
Grant Date -
Mar 6, 2003
app pub date -
Aug 30, 2001
filing date -
Aug 30, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A calculator device mainly adds an additional calculator device capable of processing numeric data to the circuits of a keypad. When the keypad is linked to a computer, the keypad can be used to enter operation commands to the computer to perform processes desired, also can be switched to calculator function to perform numeric calculation when a switch button key (or switch) on the keypad is depressed.
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