M147 Overview
OF OPERATION The first negative front, which is obtained by pressing any key, starts a delay circuit whose duration is a function of the key pressed and varies from 4 to 8 ms in normal mode (with the MODE input at V55 and f l= 500 kHz or with the MODE input at VGG and f l == 2 MHz (note 1)). If the key is released before this delay time has passed, it will not be memorized. Releasing the key retriggers the delay...
