Explanation

• USB stands for Universal Serial Bus.
• It allows communication and data transfer between a computer and peripheral devices.
• Common USB devices include mouse, keyboard, printer, scanner, and external hard drive.

Last verified on 29-09-2026

Explanation

• The Motherboard is the main circuit board of a computer.
• It holds or provides connections for the CPU, RAM, ROM, and expansion cards.
• It allows different computer components to communicate with each other.

Additional information:

• CPU → Processes instructions
• RAM → Temporary memory
• ROM → Stores permanent/basic instructions
• Expansion cards → Add extra functions to a computer

Last verified on 29-09-2026

Explanation

• A keyboard is an input device.
• Mainly used to enter text, numbers, and commands.
• Contains alphabetic, numeric, and function keys.
• Common shortcut keys include Ctrl, Alt, Shift, and Enter.

Explanation

• Data transmission means sending and receiving data through a transmission medium.
• It allows information to move from one device to another.
• Transmission media can be wired or wireless.
• Wired: Twisted-pair cable, coaxial cable, fiber-optic cable.
• Wireless: Radio waves, microwaves, infrared, and satellite communication.

Last verified on 28-09-2026

Explanation

• Monitor, Printer, and Headphones are all output devices.
• Output devices present or produce information from a computer for the user.

Additional information:

• Monitor: Displays text, images, and videos.
• Printer: Produces information on paper.
• Headphones: Produce audio or sound output.

Last verified on 28-09-2026