Does anyone have details of any Internet available programme that can measure the time taken between the pressing of a keys on a numeric pad?
Hardware ideas would be useful.
The key pad generates a key-press-acknowledgement beep so time between beep 1 and the beep 2 is what I am looking for.
Pretty open-ended request.
Most of the microsloth stuff has a pretty low system clock, so precision will be a problem using ticks.
Are the keypresses *DOING* anything or are they purely your "input" device?
I routinely measure the time between ethernet *packets* to microsecond accuracy in unix environments, probably something exists in the microsoft world too. It then becomes a question of: can you trigger some event from the keypad?
How far apart are these presses? Measuring 5 seconds +/- 1mS is a very different task to measuring a few milliseconds.
If you want to build hardware, millisecond timing in seconds is trivial. (30 years ago, we were measuring flight-times of bullets over 600 metres, with resolution below 10 nanoseconds - but that took some non-trivial hardware).
Most $5 PIC chips can do interval timing to sub-millisecond without breaking into a sweat - a PICAXE chip could do it in a couple of lines of basic, and send you the answer via RS232.
So... more information might help narrow your list of options
