Introduction to Computers Worksheet

Which component is primarily responsible for processing and making decisions in a computer?

• CPU

• RAM

• Keyboard

• Mouse

How many Hertz are in 1 Kilohertz (KHz)?

• 10 Hz

• 100 Hz

• 1000 Hz

• 10,000 Hz

If a computer has a dual core chip, how many calculations can it perform at the same time?

• 1

• 2

• 3

• 4

If a phone has 64GB of storage, how many megabytes does it have?

• 64

• 1024

• 65,536

• 67,108,864

Which of the following are output devices that a smartphone typically has?

• Screen and speaker

• Microphone and camera

• Touchscreen and stylus

• SIM card and battery

Why is the screen of a phone considered an output device?

• It displays information to the user

• It records audio

• It stores data

• It connects to the internet

A student claims that the microphone is an output device of a phone. Using your understanding of input and output devices, explain whether this claim is correct or incorrect.

• Incorrect, because a microphone is used to input sound into the phone

• Correct, because a microphone plays sound

• Incorrect, because a microphone stores data

• Correct, because a microphone displays images