Tuesday, June 16, 2009

cHaPtEr 1~sUmMaRy~

Salam..In this chapter,i have learned about Introduction to computers.Computers is known as electonic device operating under the control of instruction stored in its own memory.There is more advantages of using computers such as speed,reability,consistency,storage and communications.All works that we do become faster and we can communicated easily with other people.There is also disad vantages of using computers like violation of privacy,public safety,impact on labour force,health risks and impact on environment.
Information processing cycle involve Input,Process,Output,Storage and Communication.
Input device is a hardware used to enter data and instructions.Example of input device is scanner,camera,keyboard and etc.Then,Output device is hardware that conveys information to one or more people.Example of output device is printer,speaker,skrin of computers and etc.Processor also known as CPU.It is the electronic component that interprets and carry out the basic instruction that generate the computer.This CPU is include in 2 main components on the motherboard that is Processor(CPU) and memory.Memory consists of electronic component that store instruction on waiting.Storage holds data,instruction and information for future use.It can devide into 2 that is Storage media and Storage device.Example of Storage media is hard disk,USB,CD,memory card and exampleof Storage device is card reader.
Communication device like network and the internet.Network is a collection of computer and device connected together.Internet also communication device worldwide collection of networkst that connect millions of bussines,government aggencies,educational institutions and individuals...Beside that,computer also consists of software also called a program.Software consists of a series of instructions that tell the computer what to do and how to do it.System software divide into 2 that is Operating programs and Utility programs.ThE catogarieS of the computer are personal computer,mobile computer,game consoles,servers,mainframes,supercomputers and embedded computers.home user ,home office user,power user,mobile user and large business user are the types of computer users..computer involve in nvariouS field such as manufaccturing,education,travel,publishing,science,health care,finance,and government.

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