What is a Computer?

Question 1

What is a computer?

Answer 1

A machine or device that receives data , processes information and outputs results of assigned tasks

Question 2

What can a computer do?

Answer 2

• store large amounts of data
• carry out many different tasks
• work for a long period of time
• with stable quality
• with height speed & accuracy

Question 3

Desktop Computer definition

Answer 3

• used in our daily life
• usually at home or office

Question 4

Laptop computer definition

Answer 4

• all-in-one computer
• widely used in the education sector / business sector / personal entertainment

Question 5

Tablet definition

Answer 5

• portable
• w touchscreen

Question 6

Smartphone definition

Answer 6

• mobile device
• w touchscreen / internet access / operating system

Question 7

POS ? Definition

Answer 7

1. Point-of-sale terminal
2. • includes a screen / barcode scanner / printer / card reader / keyboard
   • used in stores to process card payment

Question 8

ATM ? Definition

Answer 8

1. Automated teller machine
2. • provides different bank services
   • cash withdrawal / bill payment / money transfer

Question 9

1936 ?

Answer 9

• Alan Turing-> Turing machine

Question 10

1953 ?

Answer 10

• IBM 701 -> 1st commercial scientific computer
• used to aid the United Nations in Korean War

Question 11

1958?

Answer 11

• Jack Kilby -> introduced ‘ integrated circuit ‘ (computer chip )

Question 12

1971?

Answer 12

• Intel introduced the 1st microprocessor

Question 13

1981?

Answer 13

IBM -> 1st personal computer

Question 14

1984 ?

Answer 14

• Apple -> 1st personal com w GUI / pointing device,Macintosh

Question 15

2002?

Answer 15

1st tablet

Question 16

2010?

Answer 16

Ipad

Question 17

Is calculator a computer?

Answer 17

Yes

Question 18

What is I-P-O ?

Answer 18

• Input -> process -> output
• three stages of computer operation

Question 19

Main component of computer?

Answer 19

CPU, power supply, motherboard, storage devices

Question 20

CPU? Definition

Answer 20

• Central Processing Unit
• brain of computer
• consists many electronic & logic circuits to perform logical operations
• major manufacturers->Intel , AMD

Question 21

Motherboard? Definition

Answer 21

-main circuit board
- holds many important components
( CPU, main memory, display card, input/output connection interface , network interface )

Question 22

Power supply ? Definition

Answer 22

• electronic device that supplies electric power of different voltage to main components
• generates a lot of heat during operation, has a fan for cooling down

Question 23

Storage devices ? Definition

Answer 23

• for keeping data
• Eg. Hard disk , SSD , RAM

Question 24

What is CPU responsible for ?

Answer 24

Fetching , interpreting , executing the instructions of computer programs