Category: Digital-Circuits

Running Lights with CD4017

The 555 Astable generates a clock for this circuit, an oscillator giving a square wave output at pin 3 which is counted (more…)

This shows how to OR gate two 555, when one 555 cycles at a low frequency a valve turns on an off, (more…)

Using this circuit on Printer Port, one could drive 256 Relays or 16K LEDs as Dot Matrix display. It can be used (more…)

how is the circuit for driving a seven segment led mail from EA A 7 segment LED display is used to display (more…)

A, B, and C are the Digital Control for x, y and z input and output pairs.The voltage at Vinx is stored (more…)

I don’t remember if this circuit worked properly. But a few were made and i might not have shown the modifications that (more…)