I'm new to programming and need information on how to use an 8051
to measure fall time from 1 Milisecond up to .5 second. The application
is for geological "Induced Polarization" measurements, whereby a pulse is sent into the earth via two electrodes and the fall time of the return pulse indicates what minerals are in the soil by the various time constants.

Thank you for your help,

Randall Seden