Lesson 1 Chapter 2 - How Computers Work

Question 1

What are the 3 stages that computers work through?

Answer 1

1. Input
2. Processing
3. Output

Question 2

Describe what is input, processing, and output?

Answer 2

Input - entering commands, data via input devices (keyboards, mice, touchscreens)
Processing - OS feeds numeric commands and data to CPU, performs calculations, then delivers results back to OS
Output - what the OS delivers back to the user

Question 3

What are 4 examples of an output process?

Answer 3

1. Shown on a display
2. Sound
3. Data is sent to a storage device or network connection
4. Page is sent to the printer

Question 4

What is binary code?

Answer 4

Binary code is a sequence or stream of electrical signals interpreted as 1s and 0s

Question 5

What is a ROM chip? What does it stand for? Where is it located?

Answer 5

ROM = Read-Only Memory chip

It’s located on the motherboard
It contains the programming that allows a computer to start up or regenerate each time it is turned on.

Question 6

What type of current is provided by the power supply, and which is provided to the power supply?

Answer 6

Direct Current DC = by power supply
Alternating Current AC = to the power supply from outlet

Question 7

What type of data is a ROM chip?

Answer 7

a ROM chip is non-volatile, permanent memory that is usually read only