Computer Application Chapter 1

  Actually we need to create blog at the first class , to share what we learned in the class . Since i create this blog by today , So .... i gonna summarise all the things that i learned about Computer Application . Our final exam is around the corner , so i take this as a revision though .....

  Computer Applications Chapter 1 
Actually i started my class when the lecturer teaching chapter 6 if no mistake . So chapter 1 until chapter 5 i just figure it myself with note and my friend .Luckily these few chapter is easy if not i kinda stress right now .

Chapter 1 : Basic introduction to Computers 
In this chapter we learn about Computer ......

What is computer ?
Computer is an electronic device, that operating under the control of instruction stored in its own memory.

Components of a computer  
Hardware - electric , electronic , mechanical components thats contains in a computer

Input device                   - allow to enter data and instructions to computer

Output device                 - hardware component that conveys  information to one or more people

system unit                     - used to process data

Storage device                - writes or reads items to and from storage media

Communications device - Enables a computer to send or receive data , instructions ,and information                                             to and from one or more computers or mobile devices

Advantages and Disadvantages of using computer.
Advantages - Speed                            Disadvantages - Health risks
                    - Reliability                                             - Violation of privacy
                    - Consistency                                           - Public safety
                    - Storage                                                   - Impact on labor force
                    - Communications                                    - Impact on environment

Green Computing
-reducing the electricity consumed and environmental waste generated when using a computer.

Network and Internet 
A network is computer and devices connected together usually wireless ,for example communications devices and transmission devices .

Internet is a worldwide collection of network that many businesses, government agencies ,educational institutions ,and individuals .

Software 
Software/program - allow to tell the computer what to do and how to do .

how we put the software into computer?
Installing - process of setting up software into computer and other hardware .


Categories of Computers 

Personal Computer 
A personal computer can perform all of its input , processing, output , and storage activities itself

                        Desktop Computer 

Mobile computer 
Just like personal computer but allow to carry around

                   notebook computer

Mobile device
A computing devices in smaller sizes











Game consoles
mobile computing devices that usually for gaming














Servers
Control access to the hardware , software , and other resources



Mainframes 
Can handle hundred or thousand of connected users simultaneously 

Supercomputers 
Capable of processing more than one quadrillion instruction in a second


Embedded Computers
Special-purpose computer that only functions as a component in a larger product