How may I count a pulse duration with k8055?

I need to measure a pulse duration beetween 20 to 100 microsecond. I tried to use ReadCount function that allows me to count event but no the events duration. Is there any function to acomplish this need?
Thank you in advance.

Sorry to say but this is not possible with the K8055.
The counter function on inputs 1 and 2 is capable to count up to about 2kHz but there is no function to measure the pulse width.
The digital and analog inputs of the K8055 can be sampled with an interval of 10ms.

I think a good choice to measure pulse duration of microseconds is a PC oscilloscope e.g. PCSU1000. It stores the waveform data with time stamps to a file for further analysis if needed.