| 摘要 |
PROBLEM TO BE SOLVED: To provide a counter comprising an electronic circuit in which reset or alteration of count value by methods other than circuit destruction is impossible and can hold the value after the count value has reached a count limit value. SOLUTION: In an up counter 7, ON/OFF of NMOS transistors 12-1 to 12-32 and 14-1 to 14-32 comprising a switch element is controlled by an up counter control circuit 3 so that every time it executes count-up operation, "1" is written in order from a ferroelectric substance capacitor 13-1. COPYRIGHT: (C)2008,JPO&INPIT |
