This might sound like a stupid question, but at what speed can i drive
7segment displays?? In my current analogue design i use a 4Hz clock to pulse
the displays, but using a pic this is a little difficult.

Will the 7segment display anything at all if i switch them at say once every
100 instuctions ( on a 10 Mhz clock )? I suppose it all depends on the duty
cycle.

Also, do i have to connect anything to the two clock lines in a 16c84 if im
using the internal clock ?

Thanx

  John