Pin Diagram of 8051by Ms. Komal Mehna
In this Video, Ms. Komal Mehna, Assistant professor, Biyani group of colleges, explains pin diagram of 8051 microcontroller. It is a 40 pin IC which consist 4, 8 bit input & output ports, supply voltage, reset, PSEN, ALE and ground pin. Port 1 is known as truly input and output port where as other ports are used for dual purpose. It has two timers/counters and two oscillators.