This CMOS logic-based circuit was found in the April 1974 issue of Radio Electronics magazine. The circuit is based on a period display and has hour and minute indications.
This circuit goes into operation producing a sound on a small speaker when the supply voltage...
This system of sequential lights for shop windows, discotheques, stores, does not use integrated...
This circuit was found in an Australian publication from 1991. The circuit emits a tone as well as...