Block diagram of 8253 and Pin diagram of 8253
In this article we are discus about the functional block diagram and pin description of 8253 or 8254 (PIT) Programmable Interval Timer. The 8253 is a programmable universal timer design for use in microcomputer system. Hence it uses N-MOS technology with +5 volt supply and it has 24 pin. Below you can see the block … Read more