Matrix user forums

hi friends,
what is the purpose of the prescalar,
how to set the Option_reg bits 2 to 0 of the 16f84,
by seting this how can control the TMR0
thanks

Hello Saran

The prescalar divides the clock speed to allow the hardware timers to run at different speeds with a fixed overall clock speed.

You can modify the prescalar by writing to the option register.

For more information please refer to the Timer0 portion of the device datasheet.