NOR gate with the 7400 (CB22406E)

The configuration below shows how to use the 7400 as a NOR function. The circuit is TTL and must be powered with 5V.

Duty Cycle CMOS Astable (CB25330E)
We found this circuit in the March 1995 issue of Electronics Now magazine. The circuit has a...
Digital Infrared Link Shield (CB14684E)
This circuit uses a PNP transistor to modulate a low power infrared LED. Observe the polarity of...
Operational LC Oscillator (CB14838E)
The maximum frequency of this circuit depends on the operational, reaching a few hundred...