1.2 What is a computer?1.2 What is a computer?

1.2 What is a computer?1.2 What is a computer?

• A computer is a machine [or device/ hardwarehardware] that stores and processes data according to a list of instructions - a program [softwaresoftware].

• It cannot think or reason. It only carries out instructions given to it. The set of instructions is called a program. Different programs allow a computer to perform different tasks.

Computer BasicsComputer Basics

C O B : C O M P U T E R S B A S I C S

COB 1

1.2 An Intelligent System1.2 An Intelligent System• von-Neumann machine

• Comparable to the brain’s functions• Blueprint of an intelligent system

Computer BasicsComputer Basics

C O B : C O M P U T E R S B A S I C S

COB 1

1.2 An Intelligent System1.2 An Intelligent System

What are these?•Input•Process•Memory•Output

1.2 Characteristics of a computer1.2 Characteristics of a computer

By looking at the picture: what are you doing?

Looking at the images nearby ... and far away

Brain to think what you have seen

Memory to store what you have

seen

Eyes are used to seesee the picture

Hands to draw what you have seen.

1.2 Characteristics of a computer1.2 Characteristics of a computer

1.2 Characteristics of a computer1.2 Characteristics of a computer

When 2 friends talking

Brain to think what have been said

Memory to store what have been said

Ears to listen to what have

been said

Mouth to react to what have been said

1.2 Characteristics of a computer1.2 Characteristics of a computer

Brain to thinkMemory to store

Eyes to see Hands to draw

1.2 Characteristics of a computer1.2 Characteristics of a computer

•Process

•Output

•Store

•Input

Brain to think what have been said

•Process

•Output

•StoreMemory to store

Ears to listen

Mouth to talk

•Input

1.2 Characteristics of a computer1.2 Characteristics of a computer

1.2 Characteristics of a computer1.2 Characteristics of a computer

•It is able to inputinput information.

•It is able to process process information.

•It is able to storestore information.

•It is able to outputoutput information

Computer BasicsComputer Basics

C O B : C O M P U T E R S B A S I C S

COB 1

1.2 An Intelligent System1.2 An Intelligent System• Human Computer

• Receives data through our senses INPUT• Processes data PROCESS• Remembers data MEMORY• Reacts to processed data OUTPUT

Computer BasicsComputer Basics

C O B : C O M P U T E R S B A S I C S

COB 1

1.2 An Intelligent System1.2 An Intelligent System• von-Neumann machine

• Comparable to the brain’s functions• Blueprint of an intelligent system

11 22

33

44

1.2 What are the characteristics of a computer?

1.2 What are the four Characteristics of computers:

Computers are able to

• Input

• Process

• Store

• Output

data and information