Electronic calculating device with faculties of detecting reproduction level of data applied thereto
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 16, 1985
Grant Date -
N/A
app pub date -
Feb 27, 1980
filing date -
Feb 28, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electronic calculating machine includes a control circuit for receiving digital calculation information recorded in an audio tape to be applied to the machine. The control circuit comprises a circuit for forming the information to pulse signals, a circuit for counting the pulse width in a time period, a circuit for comparing the pulse width with a certain value preset therein, and a display for showing the comparison results by letter information.
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Cited Art Landscape
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