A digital timer is a circuit which allows the user to set time and sets the alarm on when the time pulses are counted. Digital timer is a basic circuit which can be used as a component for a number of important complex digital systems such as safety alarm system, home security system, electronics safe system and so on.
The following is the basic block diagram for the proposed digital timer:
Figure C.1 Block Diagram of Digital Timer
The proposed digital timer consists of a D flip-flop, a 2-digit BCD counter to count pulses, a BCD to 7-segment display and a 2-digit 7-segment display. The input signal which ...