Inside the Computer

Front

What is the motherboard?

Back

The motherboard is the computer's main circuit board. It holds the CPU, memory, connectors for the hard drive and optical drives, expansion cards, and connections to the computer's ports.

Front

What is the function of the CPU?

Back

The CPU, or central processing unit, carries out commands. It is sometimes called the brains of the computer.

Front

How is a processor's speed measured?

Back

A processor's speed is measured in megahertz (MHz) or gigahertz (GHz).

Front

What is RAM?

Back

RAM (random access memory) is the system's short-term memory, temporarily storing data while the computer performs calculations.

Front

What happens to RAM when the computer is turned off?

Back

The short-term memory in RAM disappears when the computer is turned off.

Front

What is the function of the hard drive?

Back

The hard drive is where software is installed and where documents and files are stored. It provides long-term storage.

Front

What does the power supply unit do?

Back

The power supply unit converts power from the wall outlet to the type needed by the computer, sending power through cables to the motherboard and other components.

Front

What are expansion cards?

Back

Expansion cards are added to expansion slots on the motherboard to provide additional functionality, such as video, sound, network, and Bluetooth capabilities.

Front

What is the role of a video card?

Back

The video card is responsible for what you see on the monitor and can be upgraded for better performance in graphics-intensive applications.

Front

What does a sound card do?

Back

The sound card, or audio card, is responsible for audio output to speakers or headphones.