OSVA CPU, Memory, I/O

What does CPU stand for? Hint: The CPU is often referred to as the brain of the computer.

• Central Processing Unit

• Computer Power Unit

• Central Performance Utility

• Core Processing Unit

Answer explanation

CPU stands for Central Processing Unit, which is often called the brain of the computer. It is responsible for executing instructions and processing data, making it a crucial component in computing.

What is the primary function of the CPU?

• Store data

• Perform calculations and execute instructions

• Display graphics

• Connect to the internet

Answer explanation

The primary function of the CPU is to perform calculations and execute instructions, making it the core component that drives the operation of a computer. Other options like storing data or displaying graphics are handled by different components.

Which component temporarily stores data for quick access? Hint: This is volatile memory that is cleared when the power is switched off.

• Hard Drive

• RAM

• CPU

• GPU

Answer explanation

RAM (Random Access Memory) is the component that temporarily stores data for quick access. It is volatile memory, meaning it loses its contents when the power is turned off, unlike a hard drive which retains data.

Which type of memory is non-volatile?

• RAM

• Cache

• ROM

• Registers

Answer explanation

ROM (Read-Only Memory) is non-volatile, meaning it retains data even when the power is turned off. In contrast, RAM, Cache, and Registers are volatile and lose their data when power is lost.

What is the role of input devices?

• Display information

• Store data

• Send data to the computer

• Receive data from the computer

Answer explanation

Input devices, such as keyboards and mice, are designed to send data to the computer, allowing users to interact with the system. This makes 'Send data to the computer' the correct choice.

Which of the following is an output device?

• Keyboard

• Mouse

• Monitor

• Microphone

Answer explanation

A monitor is an output device that displays visual information from a computer. In contrast, a keyboard and mouse are input devices, while a microphone captures audio input.

What does RAM stand for? Hint: RAM is used for temporary data storage whilst programmes run.

• Random Access Memory

• Readable Application Memory

• Rapid Access Module

• Real-time Allocation Memory

Answer explanation

RAM stands for Random Access Memory, which is crucial for temporary data storage while programs run. It allows quick read and write access, making it essential for system performance.

What is the function of the ALU in the CPU?

• Store data

• Perform arithmetic and logic operations

• Control input/output

• Manage memory

Answer explanation

The ALU (Arithmetic Logic Unit) in the CPU is responsible for performing arithmetic and logic operations, such as addition, subtraction, and logical comparisons, making it essential for processing data.

Which component manages the flow of data between the CPU and memory?

• Control Unit

• ALU

• GPU

• ROM

Answer explanation

The Control Unit manages the flow of data between the CPU and memory by directing the operations of the processor and coordinating how data moves within the system.

What is a register in the CPU? Hint: Registers hold data and instructions currently being used.

• A storage device

• A small amount of fast memory

• A graphics processor

• A power supply

Answer explanation

A register in the CPU is a small amount of fast memory that temporarily holds data and instructions currently being used, enabling quick access and processing by the CPU.