Computer Hardware Quiz

Which device allows users to enter data by speaking into it?

• Mouse

• Keyboard

• Microphone

• Webcam

Answer explanation

The correct answer is 'Microphone' because it is the device that allows users to enter data by speaking into it, unlike a mouse, keyboard, or webcam, which serve different functions.

Why is a flash disk considered a storage device?

• It is used to enter data into the computer.

• It outputs data from the computer.

• It processes information in the CPU.

• It stores information for future use.

Answer explanation

A flash disk is considered a storage device because it stores information for future use. Unlike input or output devices, its primary function is to retain data, making it essential for data storage.

Which device would you use to control a pointer on a screen?

• Printer

• Keyboard

• Mouse

• Monitor

Answer explanation

The mouse is a pointing device that allows users to control the pointer on a screen by moving it and clicking. Unlike a printer, keyboard, or monitor, the mouse is specifically designed for this purpose.

How do 3D scanners differ from 2D scanners?

• They read barcodes.

• They analyze objects in three dimensions.

• They input audio signals into the computer.

• They interact with the user.

Answer explanation

3D scanners differ from 2D scanners primarily because they analyze objects in three dimensions, capturing depth and volume, while 2D scanners only capture flat images.

Which type of input device captures human biometric features?

• Barcode scanner

• Interactive whiteboard

• Biometric device

• Light pen

Answer explanation

A biometric device is specifically designed to capture human biometric features, such as fingerprints or facial recognition, making it the correct choice. Other options like barcode scanners and light pens do not serve this purpose.

What does the Control Unit in the CPU do?

• It manages input and output devices.

• It stores data for future use.

• It controls and coordinates computer operations.

• It reads barcodes.

Answer explanation

The Control Unit in the CPU is responsible for controlling and coordinating all computer operations, ensuring that instructions are executed in the correct order and managing the flow of data within the system.

Which input device is most suitable for graphic artists to draw on?

• Mouse

• Keyboard

• Digitiser

• Projector

Answer explanation

A digitiser, also known as a graphics tablet, allows graphic artists to draw directly onto the surface with a stylus, providing precision and a natural drawing experience, unlike a mouse or keyboard.

What distinguishes keying devices from pointing devices?

• Keying devices require pressing keys, while pointing devices move the pointer.

• Keying devices are connected to the CPU, while pointing devices are not.

• Keying devices output data, while pointing devices store data.

• Keying devices are used for graphics, while pointing devices are not.

Answer explanation

Keying devices, like keyboards, require pressing keys to input data, while pointing devices, such as mice, are used to move the pointer on the screen. This fundamental difference distinguishes their functions in user interaction.

Which of the following is an example of a voice input device?

• Webcam

• Barcode reader

• Microphone

• Mouse

Answer explanation

A microphone is a voice input device that captures sound, making it the correct choice. In contrast, a webcam captures video, a barcode reader scans codes, and a mouse is a pointing device.

Which storage device is best for transferring large amounts of data between computers?

• External hard disk

• Keyboard

• Printer

• Monitor

Answer explanation

An external hard disk is ideal for transferring large amounts of data due to its high storage capacity and portability. Unlike a keyboard, printer, or monitor, it is specifically designed for data storage and transfer.