I read a few posts where pulse counter circuits have been discussed but I have a few doubts

I am using a 89c2051 for the counter circuit

How do I count number of not pulse width in say 10ms

The posts I read came up with suggestion of reading pulse width using INTX.

I am using p1.2 for pulse counting every time the pin goes low it increments a counter register r6(LSB) and R7 (msb) of counter ad then transmit the value to PC.


Is that a bad idea?