Hello , I want to create a Kitchen Timer that has 3 input buttons : 'Start/Stop' , 'Set Minutes' , 'Set Seconds' .1)When you set minutes and seconds and press Start/Stop , the timer starts counting down until reach 00:00 on a BCD 7-segment Decoder ,activating an alarm(or just an simple led) .2)If the output is 00:00 and you press Start/Stop button it count up to 99:59 and then 00:00(and it stops).
Do I need 2 sets(1 set = 4 counters , 2 for minutes , 2 for seconds) of counters to produce the both cases?How to design propely?
Do I need 2 sets(1 set = 4 counters , 2 for minutes , 2 for seconds) of counters to produce the both cases?How to design propely?