Reading a speed sensor best method?

[Art]

I have had a 16F877A (@4MHz) working in a hot car cab for two months without a reset. That is a plug for the hardware.

Some of the goodies that come with basic block execution of your program (and PULSIN will be one of them) where interrupts will not.
All I can say is search for Darrel Taylor instant interrupts or study Microchip datasheets to do it yourself, (but you'll probably need an example anyway).
The effect a bit like multitasking, your program does not appear to be held up while pulses are being counted.

[davewanna]

Jumper: Thanks for the info on the 4620, looks like the 452 will do, but the 4620 will be better.

Art: I had a quick look at your projects, and you might be interested to know this auto controller is actually in a Surf. And I am doing a digital speedo type of arrangement for my hilux ute also, except instead of numbers, I am using the motors out of a motorcycle dash to move the factory needles.

I will look through your other projects later.

Thanks!

Dave