Grade 7 MCQs: Internal & External Hardware and Their Uses

Which of the following is an internal hardware component?

• Keyboard

• Monitor

• CPU

• Printer

Answer explanation

The CPU (Central Processing Unit) is an internal hardware component responsible for processing instructions and managing tasks within a computer. In contrast, a keyboard, monitor, and printer are external peripherals.

Which hardware component is known as the “brain” of the computer?

• RAM

• Hard disk

• CPU

• Monitor

Answer explanation

The CPU, or Central Processing Unit, is known as the "brain" of the computer because it performs calculations and processes instructions, making it essential for executing tasks and running programs.

Which internal component temporarily stores data while the computer is running?

• ROM

• Hard disk

• RAM

• Flash drive

Answer explanation

RAM (Random Access Memory) temporarily stores data that the computer is actively using, allowing for quick access. Unlike ROM, hard disks, or flash drives, RAM is designed for speed and is cleared when the computer is turned off.

Which of the following is an output device?

• Mouse

• Keyboard

• Scanner

• Speaker

Answer explanation

A speaker is an output device that produces sound, while a mouse, keyboard, and scanner are input devices used to interact with a computer. Therefore, the correct answer is the speaker.

Which device is used to enter text into a computer?

• Monitor

• Keyboard

• Speaker

• Printer

Answer explanation

The keyboard is the primary device used to enter text into a computer. It consists of keys that represent letters, numbers, and symbols, allowing users to input data efficiently. Other options like monitor, speaker, and printer do not serve this function.

Which internal hardware stores data permanently?

• RAM

• Cache

• Hard disk

• CPU

Answer explanation

The hard disk is the internal hardware that stores data permanently, unlike RAM and cache, which are volatile and lose data when power is off. The CPU processes data but does not store it permanently.

Which of the following is an external storage device?

• RAM

• ROM

• USB flash drive

• Motherboard

Answer explanation

A USB flash drive is an external storage device used to store and transfer data. In contrast, RAM and ROM are internal memory types, and a motherboard is a main circuit board, not a storage device.

Which hardware displays visual output from the computer?

• Printer

• Monitor

• Speaker

• Microphone

Answer explanation

The monitor is the hardware that displays visual output from the computer, showing images and videos. In contrast, a printer produces physical copies, while speakers and microphones handle audio output and input, respectively.

Which component connects all internal hardware together?

• Power supply

• Motherboard

• Hard disk

• RAM

Answer explanation

The motherboard is the main circuit board that connects all internal hardware components, including the CPU, RAM, and storage devices, allowing them to communicate with each other.

Which device is used to capture sound?

• Speaker

• Microphone

• Monitor

• Printer

Answer explanation

A microphone is the device specifically designed to capture sound by converting sound waves into electrical signals, making it the correct choice. Speakers, monitors, and printers serve different functions.