The data bus in an 8085 microprocessor is a group of
1
Eight bidirectional lines that are used to transfer 8 bits between the microprocessor and its I/O memory
2
Eight unidirectional lines are used to transfer data between outer data line and inner registers
3
Sixteen bidirectional lines that are used to transfer 8 bits between the microprocessor and its I/O memory
4
Sixteen unidirectional lines are used to transfer data between outer data line and inner registers