Digital stop clock / Amir Spian and Azman Mat

The Digital Stop Clock is designed for telephone switch board operators and for programme timing in audio recording studio. The Digital Stop Clock is build using the integrated circuit that is TTL IC type. The main blocks of the Digital Stop Clock are the clock, counter, memory, decoder and display. This Digital Stop Clock is able to give a maximum count of 99 minutes and 59 seconds and have facilities to hold the display as long as needed. The objective of the report is to provide experience in developing circuits and to gain understanding of its operation.