カテゴリー 全て - mobile - personal - computers

によって Amanda Amani 5年前.

129

Topic 1: Introduction to Computers

The world of computers is vast and varied, encompassing devices ranging from personal and mobile computers to powerful mainframes and supercomputers. Personal computers, like desktops and laptops, are designed for individual use and can handle a wide range of tasks independently.

Topic 1: Introduction to Computers

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