Computer Hardware Quiz

What is the term used to describe the physical components of a computer?

• Software

• Hardware

• Programs

• Applications

Answer explanation

The term 'hardware' refers to the physical components of a computer, such as the CPU, RAM, and hard drives. In contrast, 'software' includes programs and applications that run on the hardware.

Why is the CPU referred to as the "brain" of the computer?

• It stores all the data.

• It retrieves and processes all functions of the computer.

• It outputs information to the user.

• It interacts with the user.

Answer explanation

The CPU is called the "brain" of the computer because it retrieves and processes all functions, coordinating tasks and executing instructions, which is essential for the computer's operation.

Which of the following is a pointing device?

• Monitor

• Keyboard

• Mouse

• Printer

Answer explanation

A mouse is a pointing device used to interact with a computer's graphical user interface, allowing users to point, click, and drag items on the screen. In contrast, a monitor displays information, a keyboard inputs text, and a printer outputs documents.

What distinguishes input devices from output devices?

• Input devices send data into the computer, while output devices display or transmit data from the computer.

• Input devices provide power to the computer, while output devices receive data.

• Input devices display images, while output devices process data.

• Input devices are for data storage, while output devices transfer files.

Answer explanation

Input devices, like keyboards and mice, send data into the computer, while output devices, such as monitors and printers, display or transmit data from the computer. This distinction is crucial for understanding how computers interact with users.

Which input device would a graphic artist most likely use to draw or write?

• Touchpad

• Light pen

• Digitiser

• Barcode scanner

Answer explanation

A graphic artist would most likely use a digitiser, as it allows for precise drawing and writing with a stylus, making it ideal for creating detailed digital artwork. Other options like touchpads and barcode scanners are less suited for this purpose.

What is the primary function of a storage device in a computer?

• To input data

• To store information

• To process instructions

• To produce output

Answer explanation

The primary function of a storage device in a computer is to store information. Unlike input devices that bring data in, processing units that handle instructions, or output devices that display results, storage devices retain data for future use.

Which device allows users to interact with and draw directly on a large screen?

• Mouse

• Interactive whiteboard

• Trackball

• Barcode scanner

Answer explanation

The interactive whiteboard allows users to engage with content by drawing and writing directly on its surface, making it ideal for presentations and collaborative work, unlike a mouse or trackball which do not support direct interaction.

How do capacitive touch screens detect input?

• By capturing data from barcodes

• By detecting infrared rays

• By sensing the electrical properties of the human body

• By converting data into digital format

Answer explanation

Capacitive touch screens detect input by sensing the electrical properties of the human body. When a finger approaches the screen, it alters the local electrostatic field, allowing the device to register the touch.

Which of the following is an example of a keying device?

• Joystick

• Keyboard

• Webcam

• Digitiser

Answer explanation

A keyboard is a keying device used for inputting text and commands into a computer. Unlike a joystick, webcam, or digitiser, which serve different functions, the keyboard is specifically designed for typing.

Which input device would be best for an online meeting?

• Barcode scanner

• Webcam

• Joystick

• Projector

Answer explanation

A webcam is essential for online meetings as it allows participants to see each other, enhancing communication. Other devices like barcode scanners, joysticks, and projectors do not serve this purpose effectively.