Question

The device needed to interface input device with 8085 is

Answer 1

Answer:

memory interfacing and i/o interfacing devices

Explanation:

for memory interfacing microprocessor used

for i/o interfacing interfacing pins are used.

A15 - A8 (Higher Address Bus)

AD7 - AD0(Lower Address/Data Bus)

ALE

RD

WR

READY

Answer 2

The 8255 is a programmable peripheral interface.

• It is an IC used to improve on the interfacing of microprocessors and microcontrollers with I/O gadgets and increment the quantity of I/O gadgets that can be interfaced.
• In the 8085 Instruction set, there are two directions in 8085 for correspondence with I/O ports.
• They are the IN and OUT directions.
• The IN or OUT guidance memory helper ought to be trailed by an 8-cycle port location. Consequently, we can have 2 8 = 256 info ports and 256 result ports are conceivable in the 8085-based microcomputer.
• The microprocessor MPU performs different operations with peripheral gadgets or a memory area by utilizing three arrangements of correspondence lines called transports: the location transport, the information transport, and the control transport.
• What's more, these three joined lines are called framework transport.