Question

In a $8085$ microprocessor system with memory mapped $I/O$.

• A. $I/O$ devices have $8$ bit addresses
• B. $I/O$ devices are accessed using IN and OUT Instructions
• C. There can be maximum of $256$ input devices and $2564$ output devices
• D. Arithmetic and logic operations can be directly performed with the $I/O$ data

Answer 1

The correct option is D Arithmetic and logic operations can be directly performed with the $I/O$ data

In a 8085 microprocessor system with memory mapped I/O then Arithmetic and logic operations can be directly performed with the I/O data.

Microprocessor:-

A microprocessor is a multipurpose, programmable, clock-driven, register-based electronic device that reads binary instructions from a storage device called memory, accepts binary data as input and processes data according to those instructions and provide results as output.

Microprocessor is a controlling unit of a micro-computer, fabricated on a small chip capable of performing ALU (Arithmetic Logical Unit) operations and communicating with the other devices connected to it.

Arithmetic and logic unit:-

An arithmetic-logic unit (ALU) is the part of a computer processor (CPU) that carries out arithmetic and logic operations on the operands in computer instruction words.