i am implementing a timer circuit along with buzzer. i have cd 40110 ic in cascade format for 7 segment display.
for driving the ic i used 555 astable clock for one second.
so that after each one second the counter and display increments now i want to a veriable time period circuit so that after each N seconds, the ic cd40110 resets and start to count again from zero , along with a buzzer will remain on for 4 seconds.
how to do this??????????
in summery i need a buzzer cum display for each N seconds.
after N seconds a buzzer will sound for 4 seconds
how to do this by ic cd40110.
the value of N can vary by 20 to 55 seconds
ps i cant use any microcontroller and any programmable ic
for driving the ic i used 555 astable clock for one second.
so that after each one second the counter and display increments now i want to a veriable time period circuit so that after each N seconds, the ic cd40110 resets and start to count again from zero , along with a buzzer will remain on for 4 seconds.
how to do this??????????
in summery i need a buzzer cum display for each N seconds.
after N seconds a buzzer will sound for 4 seconds
how to do this by ic cd40110.
the value of N can vary by 20 to 55 seconds
ps i cant use any microcontroller and any programmable ic