sir
iam using a 4 push button not a key pad.sir i wrote program for switch interfacing
1-- push button for increment in digites
2-- push button for decreamrent in digites
3-- push button for reset

when i push 1st button it start count from 1 to 99999.and when i push 2nd button then decrement start from 99999 to 00000.and when i push 3rd button
it reset and becom 00000.
but want to do that------------
i use 4th push button for selet seven segment after it increament or decreament in selected seven segment.

as by using 4th push button i select 1st seven segment then increment and decreament in selected from 0 to 9 and 9 to 0 . and same thing in other seven segment also.

sir i wrote program for increament and decreament but i dont know how i write code for selectin seven segment.
plz help to write this coad. i will be thankfull to u.