2-bit decoder 7400 (CB22421E)

This circuit decodes a two-bit value into four outputs (one of four). The circuit must be powered by a voltage of 5 V.

Fast adder 1 (CB7055E)
We found this circuit in an Electronic Engineering from the 90s. It applies to any logical family....
HT2030 Ornamental LEDs (CB26036E)
This circuit with two HT2030s powers 6 LEDs in a decorative flashing system. The circuit is from...
Bistable 555 (CB13828E)
In the figure we show how to implement a bistable or flip-flop using a 555 integrated circuit. The circuit...