This simple logic test circuit with 3 LEDs was found in October 1985 Radio Electronics magazine. The power supply is according to the logic, and this version is indicated for TTL.
This circuit was found in a 90s Popular Electronics. The circuit uses several relays in order to...
This circuit was obtained in an old manual valid for practically any type of operational...
This bank of switches can be programmed in a variety of ways for logic experiments. The circuit is from...