CPU Quiz: Test Your Knowledge of Central Processing Unit

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Questions and Answers

What does the Control Unit in a computer system do?

Determines which register is selected by the bus during each register transfer (correct)

Stores binary information in groups of bits

Carries data between the processor and memory unit

Holds intermediate arithmetic and logic results

Which register in a computer system holds the intermediate arithmetic and logic results?

AC (correct)

MDR

CIR

What type of memory is used for temporary storage in a computer system?

ROM

Cache Memory

RAM (correct)

Secondary Memory

What are buses in a computer system primarily used for?

Transferring information between registers Signup and view all the answers

Which register in a computer system contains the current instruction during processing?

CIR Signup and view all the answers

What is the role of the Address Bus in a computer system?

Carries the address of data between the processor and memory Signup and view all the answers

What is the main function of the Control Unit in a computer system?

Control the operations of components like ALU, memory, and input/output devices Signup and view all the answers

Which component of the CPU contains the address of the instructions to be fetched?

Control Unit (CU) Signup and view all the answers

What type of operations does the Arithmetic and Logic Unit (ALU) perform?

Arithmetic and logic operations Signup and view all the answers

Which register in the CPU holds the memory location of the data that needs to be accessed?

Memory Address Register (MAR) Signup and view all the answers

What does the Instruction Register in the CPU store?

Instructions fetched from memory for execution Signup and view all the answers

Which component in the CPU allows for arithmetic and logic operations to be carried out?

Arithmetic and Logic Unit (ALU) Signup and view all the answers

Which device is used to move the cursor position on a computer screen?

Joystick Signup and view all the answers

What type of device is a keyboard in a computer system?

Input device Signup and view all the answers

Which pointing device cannot be used to enter text into a computer?

Mouse Signup and view all the answers

What feature distinguishes a scanner from other input devices?

Works like a photocopy machine Signup and view all the answers

Which device has sets of keys for letters, numbers, characters, and functions?

Keyboard Signup and view all the answers

What is the primary function of an input device in computing?

Entering data into the computer Signup and view all the answers

Study Notes

Control Unit and Registers

The Control Unit retrieves and decodes instructions, generates control signals, and manages data transfer between registers and memory.
The Arithmetic and Logic Unit (ALU) performs arithmetic and logical operations, such as addition, subtraction, AND, and OR.
The Accumulator register holds intermediate arithmetic and logic results.
The Program Counter (PC) register contains the address of the instructions to be fetched.
The Instruction Register (IR) stores the current instruction being processed.

Memory and Bus

Random Access Memory (RAM) is used for temporary storage.
Buses are primarily used for data transfer between components, such as instructions, data, and addresses.

Address Bus

The Address Bus is used to transmit the memory address of the data to be accessed.

CPU Components

The Arithmetic and Logic Unit (ALU) performs arithmetic and logical operations.
The Program Counter (PC) contains the address of the instructions to be fetched.

Input Devices

A keyboard is a type of input device that has sets of keys for letters, numbers, characters, and functions.
A mouse is a pointing device used to move the cursor position on a computer screen.
A scanner is an input device that can read text and images, distinguishing it from other input devices.
The primary function of an input device is to allow users to interact with the computer and enter data.

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Description

Test your knowledge on the Central Processing Unit (CPU) and its role in executing programs using the fetch-decode-execute cycle. Explore the functions and components of the CPU that are essential for data processing operations.