Computer hardware lesson 3

How many symbols are used in the Hexadecimal number system?

16 symbols

How many AC volts of electricity could you be shocked with if you don't unplug a computer before opening it and touching the internal parts?

50 volts

What type of electrical current comes from a wall socket?

Alternating current

What part of the human body is like a computer's CPU?

Central Processing Unit (CPU) = HUMAN BRAIN

What does DDR stand for?

Double data rate

What is the processor called that is used on video cards? What do the acronyms stand for?

Graphics processing unit

What connection port is available on many different devices, like Smart TV's, game consoles, and home theater systems?

HDMI

Which of the listed devices output information from a computer?

Monitor,printer,headphones,computer speakers,projector,gps,sound card and video card.

What does RAM stand for?

Random Access Memory (RAM)

List an output device that can use a FireWire cable to connect to a computer?

USB

What do you call the area located on the back of a desktop computer that houses many different ports?

USB ports

_____________ require power to retain information?

Volatile memory

what task happens after a computer has input information?

any hardware component that allows you to enter data and instructions into the computer.

What is the step after the computer processes information?

data storage

List two devices listed are designed to input information to a computer?

keyboard & mouse

A laser printer uses _____________ ______________ to beam this information onto a drum inside the printer, which builds up a pattern of static electricity.

laser beam

What should you touch to remove static electricity from your skin when working with a computer?

touch it to something metal in your house