Television set/calculator interface including exchangeable keyboard panel and program memory cartridge
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 31, 1981
Grant Date -
N/A
app pub date -
May 14, 1979
filing date -
May 15, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A combined home-use-television set/calculator electronic system comprising a control unit for conducting arithmetic calculations and for displaying calculation results on an image screen of the home-use-television set. A keyboard unit is exchangeably connected to the control unit for increasing operation abilities of the combined home-use-television set/calculator electronic system. A read only memory cartridge is exchangeably secured to the control unit. A read only memory corresponding to a selected keyboard unit is secured to the control unit for developing operation instruction signals which are required for performing the arithmetic calculations associated with the selected keyboard unit.
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Family
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Cited Art Landscape
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