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Digital clock
A 24 hour digital clock built from counter ICs and logic gates, simulated in Proteus.
- Course
- Digital Design
- When
- Nov 2020
- Team
- Tursélio Mahoque
- Supervisor
- Prof. Rajesh Rohilla
The problem
Show how counters and gates alone can keep and display time, with no processor.
How it works
- 1Split the circuit into seconds, minutes and hours blocks, each built on 74HC192 counters
- 2Each block carries over into the next when it rolls over
- 3AND gates reset the hours block when it reaches 24
Result
The simulation keeps time like a real clock and stopwatch.
From the report
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