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DETAILED DESCRIPTION
24 Hour Digital clock using decade counters 74LS90 and BCD to 7 segment decoder/drivers 74LS47. using the74LS90 decade counters the various pins can be wired to reset at a certain value and trigger the input of the next counter. The timing was achieved using a 555 timer as the crystal oscillator circuit operated with a different supply voltage and was not compatible with the supply voltage of the rest of the circuit.
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