This circuit was found in Philips documentation from 1967. The components are of the time, being transistors like BCY38 for TR1, BC108 for TR3, and others depending on currents.
June 2017 - New Honeywell MT MICROSWITCH Series can be ordered from Mouser Electronics for...
This CMOS circuit for LED displays is from a Radio Electronics magazine from February 1989. The...
September 2017 - Mouser Electronics is announcing that it already have in its inventories the new...