Revision for ICT Yr 3

What material was the abacus made from?

• Metal circuits

• Beads and rods

• Plastic

Answer explanation

The abacus consists of beads strung on rods, traditionally made from wood.

What mechanical device was used for counting before modern computers?

• Napier’s Bones

• Smartphone

• Typewriter

Answer explanation

Napier's Bones is a tool invented by John Napier to simplify multiplication.

What happens when you double-click the mouse?

• An item is opened

• The computer turns off

• The keyboard lights up

Answer explanation

Double-clicking quickly with the mouse opens files, folders, or applications.

What must be done before turning off a computer?

• Disconnect the cables

• Press the monitor button

• Shut down using the Start menu

Answer explanation

Proper shutdown prevents damage to files and the system.

What is the purpose of the taskbar?

• To show open programs and quick actions

• To store all computer files

• To decorate the desktop

Answer explanation

The taskbar helps users access and manage active applications and settings.

Which tool in a drawing program helps erase mistakes?

• Brush Tool

• Line Tool

• Eraser Tool

Answer explanation

The eraser tool removes parts of the drawing that are not needed.

How do you open an application on the desktop?

• Double-click its icon

• Drag it to the bottom of the screen

• Right-click and select delete

Answer explanation

Double-clicking the icon of an application opens it.

What is the purpose of saving a file?

• To share it immediately

• To keep it for future use

• To delete it quickly

Answer explanation

Saving a file stores it on the computer for future access.

What is a mechanical counting device?

• Smartphone

• Pascaline

• Digital Calculator

Answer explanation

The Pascaline, invented by Blaise Pascal, is a mechanical device used for addition and subtraction.

What do icons on the desktop represent?

• Computer hardware

• Programs and files

• Mouse clicks

Answer explanation

Icons are small images that represent software programs, files, or folders on the desktop.