The data bus in 8080A/8085 microprocessor is a group of

A. eight bidirectional lines that are used to transfer 8 bits between the microprocessor and its I/O and memory

B. sixteen bidirectional lines that are used for data transfer between the microprocessor and memory

C. eight unidirectional lines that are used for I/O devices

D. eight lines used to transfer data among the registers

E. None of the above

Answer: Option A

Solution(By Examveda Team)

In 8085 microprocessor, Address bus is of 16 bits (A0-A15) and can transfer maximum 16 bit address and hence can address 65,536 different memory locations. This bus is multiplexed with 8 bit data bus. So, the most significant bits (MSB) of address goes through Address bus and LSB goes through multiplexed data bus.