JBAG 2011

COMPUTER CONCEPTS

An Introduction to Computer Technology

Prepared by: Joel Bryan A. Guevarra

JBAG 2011 JBAG 2011

WHAT IS A COMPUTER?

JBAG 2011

JBAG 2011

What is a computer?

• Etymology

–  Latin: computus and computare

– compute = to determine by

mathematical means

JBAG 2011

What is a computer?

• A machine that can be

programmed to accept

data, process it into useful

information, and store it

away

JBAG 2011

JBAG 2011

What is a computer?

• A machine designed for

manipulating data

according to a list of

instructions known as a

program

JBAG 2011

JBAG 2011

KEY CONCEPTS

• Computer: A machine that can receive and store information and change or process it

•  Information: Knowledge that conveys meaning and is useful

JBAG 2011

KEY CONCEPTS

• Data (pl.): a collection of unprocessed items (e.g. text, numbers, images, audio, video)

• Note: the term ‘raw data’ refers to unprocessed information

JBAG 2011

KEY CONCEPTS

• People who use computers directly or uses the information are called: – computer users – end users – or simply users

JBAG 2011 JBAG 2011

COMPUTER LITERACY

Why learn about computers?

JBAG 2011

COMPUTER LITERACY • Awareness

– Becoming aware of the importance, versatility, and pervasiveness of computers in our society

•  Knowledge –  Learning what computers are

and how they work –  Learning some technical jargon

•  Interaction – Knowing how to use computers

for some simple applications

JBAG 2011 JBAG 2011

ADVANTAGES & DISADVANTAGES OF USING COMPUTERS

Pros and Cons

JBAG 2011

ADVANTAGES

•  Speed

•  Reliability (low failure rate)

• Consistency

•  Huge Storage Capacity

• Ability to communicate with other

computers

JBAG 2011

DISADVANTAGES

Violation of privacy

Impact on labor force

Health risks Impact on environment

JBAG 2011

Correct Posture

JBAG 2011

Correct Typing

JBAG 2011 JBAG 2011

WHAT IS A SYSTEM?

JBAG 2011

What is a System?

• a regularly interacting or

interdependent group of

elements forming a unified

whole

• a collection of related parts

treated as a unit where its

components interact

JBAG 2011

JBAG 2011 JBAG 2011

WHAT ARE THE COMPONENTS OF A COMPUTER SYSTEM?

Computer System

JBAG 2011

Computer Components

Computers are made up of several parts:

• HARDWARE

–  physical equipment required to create, use, manipulate and store electronic data

JBAG 2011 JBAG 2011

JBAG 2011

Computer Components

• SOFTWARE –  Instructions that tell the hardware what

to do

• PEOPLEWARE –  Computer programmer: writes software –  User: purchases and uses software