how to increment Timers externally?

[bells_electronics]

I want to know that is it possible to increment Timers (as counter) externally via pins? Without using any "external interrupt pin then in ISR increment timer".
I want directly via PINs ??

I am using PIC16F877A , 18F4550.

Tell me what should I do ??

[andrewg]

I think you should read the respective data sheets and see which timers are connected to external pins. From memory, Timer 0 and 1 of both those chips each support external inputs, and Timer 1 additionally supports async counting (i.e. while asleep). The data sheet will tell you for sure.
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Andrew