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
