24 Second Shot Clock Mk 2
Circuit :  Milardo de Guzman
Email  : Milardo de Guzman

Description
A new 24 second countdown timer from Milardo. The circuits uses fast 74LS schottky IC's.

Notes
Here is how the circuit works:
A 24 second countdown starts when S3 is off and S2 is pressed.

Switch S3 is used to start/pause the countdown. S2 resets the countdown (99 to 00) when the countdown reach 00.

To restart the countdown to 24 Seconds S1 is pressed.

Circuit Exchange International Return to Timing Circuits http://www.zen22142.zen.co.uk