This sequential circuit of LEDs was found in a Popular Electronics from the 90s. The circuit can be programmed and an adaptation consists of using optical couplers to drive power loads.
This circuit is from an old American publication. It divides a 40 to 60 MHz TTL signal by integer...
The SN72741 integrated circuit is nothing more than the version of Texas Instruments of the known...
Found elsewhere in this section, but from other sources, this circuit is from a 1964 Electronic...