Attendance_counter

Published:2009/7/19 22:02:00 Author:Jessie | From:SeekIC

This circuit shows an ICM7249 connected as an attendance counter, with the LCD display showing each increment. The battery can be replaced without disturbing operation if a 100-μF capacitor is placed in parallel with the battery before removal. Disconnect the display (if possible) during the battery replacement. After replacement, the capacitor can be removed and the display can be reconnected. Harris Semiconductors Data Acquisition 1991 p, 11-90



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