Random Number Generator

#1 · May 9, 2025, 11:08 pm

This is a simple random number generator ( from 1 to 10 ) from page 120 of Forrest M Mims Getting Started in Electronics.

The design in the book uses a 4011 quad NAND, I've used a 74HC00 in it's place and it seems to run ok.

Instructions are, close SW1 and all LED's will glow dimly. Open SW1 and a randomly selected LED will glow.

It also gives the following hint:

Increase C1 to 4.7µF and leave SW1 closed to make a sequential flasher.

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