Topic 1: Introduction to Computers

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Topic 1: Introduction to Computers

Categories of Computers

Servers

Provide a centralized storage area for program,data & information

Control access the hardware,software and other resources on a network

Mainframes

Can handle hundreds or thousands of connected user

Large,expensive,powerful

Embedded Computer

Special-purpose computer that functions as a component in larger product.

Computer Devices & Office Machines

Copiers

Process Controllers & Robotics

Medical devices

Machine controller

Automobiles

Antilock brakes

Cruise control

Airbag Controller

Home Automation Devices

thermostats

microwave

Consumer Electronics

Video Recorders

Digital TV

Mobile & Digital telephones

Super Computer

capable of processing more than 1 quadrillion intsructions in a single second

Fastest,most powerful

Game Consoles

Mobile computing device designed for single-player or multiplayer video games

Remote control

Joystick

Handheld game consoles

Mobile Computer and Mobile Devices

Mobile Device

Computing device small enough to hold in your hand

Digitals Camera

Portable Media player

Handheld computers

E-books readers

Smart phones & PDAs

Mobile Computer

Personal computer you can carry from place to place

Tablet PCs

Ultra-thins

Netbooks

Laptop computers

Notebooks computers

Personal Computer

perform all of its input, processing, output, and storage activities by itself

Desktop Computer

Apple

PC

Computer Applications in Society

Finance

ATM

Travel

Manufacturing

Publishing

Promote the product

Science

Collecting analysis

Health Care

Make a simulation before do the real operation & surgery

Do operation

Goverment

Manage the data or website

Education

Search information

Elements of an Information System

Data

ROW Data in the computer

Procedure

The process and procedur to manage all the data in computer

People

People that use the computer to manage all the data in computer

Software

Information in the computer

Operating system

Folder- file management

Application software

The application must be downloaded if user want to use it.

Google

Microsoft OneNote

Microsoft Excel

Microsoft Words

Example : Microsoft power Point

Hardware

External

Component outside the computer and people can touch

Keyboard

Printer

Mouse

Monitor

Example: Hard Disk

Internal

Component in the computer

Network Card

RAM (Random Access Memory)

Power Supply

CPU

Example: Motherboard

Advantages and Disadvantages of Using Computers

Disadvantage

Public Safety

Impact of Labor Force

Impact of Enviroment

Violation of Privacy

Health Risk

Advantage

Using map

Communications

Consistency

Reliability

Speed

Mean of Computer

To do daily work

-Stored it own memory or storage

Storage

Example : Hard Disk

-Operating under the control

-Electronic device

Information Processing Cycle

Input (Data) PROCESSING Output (Informations)

Input Processing Output

(Data) (Information)

Examples of Computer Usage

Home Office User

Look up information

Make telephones calls

Enterprise User

Communicate among employees

Blog

Power User

Industry-specific software

Working with multimedia

Mobile User

Play video games

Watch movies

Listen to music

Home User

Web access

Entertainment