Central Processing Unit: Instruction Code and Opcode

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Questions and Answers

What is an instruction code?

Data read from memory and used as the data to be operated on together with the data stored in the processor register
A unique binary code that represents the basic operations like add, subtract, etc.
The part of an instruction that specifies the data on which the operation will be performed
A set of bits that specify the operation to be performed by the computer (correct)

What are operands in an instruction?

Data read from memory and used as the data to be operated on together with the data stored in the processor register (correct)
The part of an instruction that specifies the data on which the operation will be performed
A unique binary code that represents the basic operations like add, subtract, etc.
A set of bits that specify the operation to be performed by the computer

What is an opcode?

A set of bits representing the basic operations like add, subtract, multiply, shift, and complement (correct)
A collection of bits specifying the operation to be performed
A type of memory where operands are stored for processing
The part of the processor responsible for executing instructions

What does the operation code (opcode) consist of?

<p>At least n bits for a given 2^n operations (D)</p> Signup and view all the answers

What is general register organization?

<p>A part of CPU where data is temporarily stored for processing (C)</p> Signup and view all the answers

Study Notes

Instruction Code

An instruction code is a binary code that represents a single instruction in a computer program.

Instruction Components

An instruction consists of an opcode (operation code) and operands.

Opcode

An opcode (operation code) specifies the operation to be performed, such as ADD, SUB, MOVE, etc.
An opcode consists of a unique binary code, usually 3-6 bits long, that identifies the operation.

Operands

Operands are the data or addresses that the operation is performed on.
Operands can be registers, memory locations, or immediate values.

General Register Organization

General register organization refers to the use of a set of registers that can be used for any type of operation.
In a general register organization, there is no specific register dedicated to a specific task or type of data.

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Description

Test your knowledge about instruction codes, opcode, and their role in the central processing unit. This quiz covers topics such as common bus system, general register organization, stack organization, and addressing modes.