Quiz on CPU and Output Devices

What is the primary function of the Arithmetic and Logic Unit (ALU) in the CPU?

• Store data

• Perform arithmetic and logical operations

• Control input devices

• Display visual information

Answer explanation

The primary function of the Arithmetic and Logic Unit (ALU) in the CPU is to perform arithmetic and logical operations, making it essential for executing calculations and decision-making processes in computing.

Which component connects all computer parts and allows communication between them?

• Control Unit

• Monitor

• Motherboard

• ALU

Answer explanation

The motherboard is the main circuit board that connects all computer components, allowing them to communicate. It houses the CPU, memory, and other essential parts, making it crucial for the overall functionality of the computer.

What type of copy does a monitor produce?

• Hard copy

• Soft copy

• Printed copy

• Audio copy

Answer explanation

A monitor displays information on the screen, which is considered a soft copy. Unlike hard copies, soft copies are not printed and exist in digital form, making 'soft copy' the correct answer.

What is the purpose of the registers in a CPU?

• Store permanent data

• Temporarily store instructions and data

• Control the speed of the processor

• Manage software installations

Answer explanation

Registers in a CPU are used to temporarily store instructions and data that the processor is currently working on, allowing for faster access and processing compared to accessing data from main memory.

Which device generates an output by displaying information in the form of graphics, text, and videos?

• Headphones

• Monitor

• Printer

• Plotter

Answer explanation

A monitor is a device that displays information visually, including graphics, text, and videos. Unlike headphones, printers, and plotters, which serve different functions, the monitor is specifically designed for visual output.

Which device produces printed documents such as reports and photos?

• Actuator

• Speaker

• Printer

• Headphones

Answer explanation

A printer is the device specifically designed to produce printed documents, including reports and photos, by transferring digital information onto paper. The other options, like actuators and speakers, serve different functions.

Which device is used to listen to music, audiobooks, or audio files from a computer?

• Projector

• Monitor

• Printer

• Speakers

Answer explanation

Speakers are the devices specifically designed to output sound, allowing you to listen to music, audiobooks, or audio files from a computer. Other options like projectors, monitors, and printers do not serve this purpose.

What output device produces physical movement as an output based on signals received from a computer?

• Actuator

• Printer

• Plotter

• Headphones

Answer explanation

An actuator is an output device that converts electrical signals from a computer into physical movement, making it the correct choice. Other options like printers and plotters produce printed output, while headphones provide audio.

What type of output do Braille readers provide for visually impaired users?

• Audio output

• Printed output

• Tactile output

• Visual output

Answer explanation

Braille readers provide tactile output, allowing visually impaired users to read by feeling the raised dots. This is essential for accessing written information through touch, distinguishing it from audio or visual outputs.

Which device can be used to project a large visual display onto a wall or screen?

• Printer

• Monitor

• Projector

• Speaker

Answer explanation

A projector is specifically designed to project large visual displays onto walls or screens, making it the correct choice. Printers produce hard copies, monitors display images directly, and speakers output sound.