Pin Diagram of 8085A Microprocessor Diagram: Pin Diagram of 8085 Microprocessor Functional of Each Pin (Briefly): 👉A 8 – A 15 (Output): These are address bus and used for the eight most significant bits of the memory address or eight bits i/o address. 👉 AD 0 – AD 7 (Both Input and Output): Thses are time multiplexed address/data bus that is served dual purpose. They are used for the LSB (Least Significant Bits) 8 bits of memory address and data during other time. 👉ALE (Output): It is abbreviated as Address Latch Enable. It goes high when 8 lower bits of address is latched. 👉IO/M* (Output): It is a status signal which distinguishes whether the address is for i/o or memory. When it goes high, the address bus is for an i/o device. And when it goes low, the address is for memory location because M is an active low signal. 👉S 0 , S 1 (Ouput): These are status signal send by microprocessor to distinguish various types of operation. S 0 S 1 O...