Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
do you mean making counters that count from 0,1,2,3,etc...etc...? if yes then make three variable and increase/decrease it in event of pushing 1 of 3 button. and display the variables using either multiplexed 7 segment or with the help of MAX7219.
here is pseudocode:
declare 3 variable here to store the count data
if button 1 is pressed then increase variable 1
if button 2 is pressed then increase variable 2
if button 3 is pressed then increase variable 3
send all three variables to display
thank you for your answers
yes they are three separate counters ,actually all of them use
the same start ,count variable but each should stop according to
a different condition ,as if you were measuring time taken by three
runners all of them started at the same time but each one will stop
running at a certain moment according to a certain external condition