Assignment

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Computer System

Definition:   

A system of interconnected computers that share a central storage system and various peripheral devices such as a printers, scanners, or routers. Each computer connected to the system can operate independently, but has

the ability to communicate with other external devices and computers.

Components of a Computer SystemCan you identify the:

Computer Case

1. Monitor

2. Speakers

3. Keyboard

4. Mouse

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5. Printer

6. Scanner

7. Web camera

8. Floppy drive

9. CD or DVD drive

Parts Of Computer System

The two basic parts of a computer system: 

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1. Hardware: The hardware is the part of the computer you can touch and see.(ex. Keyboard, mouse, monitor)

2. Software: The software is a part of the computer you cannot touch but is very important. The software is all the programming that makes the

computerrun. 

Common computer hardware:The following is a list of the most common hardware found on office and home computers. 

The monitor is the display screen, similar to a television screen.

The keyboard is what you type on, similar to a type writer.

The mouse is small hand held device that attaches to the computer. It may have two or three buttons.

The computer tower or case is the heart of the system. This is a box that contain all the parts that make the computer work.

The printer is a device that puts what you have to created on the paper

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The scanner is a device that capture picture so that they can b seen and used.

Computer Software

Software also called a program, consist of a series of instructions that tells the computer what to do and how to do.

Types of computer software :

System softwareOperating softwareUtility program

Application software

System software: System software consists of the programs that control or maintain the operations of the computer and its devices.

Operating software:

An operating system is a set of programs that coordinates

all the activities among computer hardware.1

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Utility program: A utility program allows a user to perform maintenance-type tasks usually

Application software: Application software consists of programs designed to make users more productive and assist them with personal tasks .

Information systemAn information system(IS) is typically considered to be a set of interrelated elements or components that collect(input), manipulate(processes), and disseminate (output) data and information and provide a feedback mechanism to meet an objective.

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Computer categories1

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Computer systems can be categorized according to their processing speed and power into:

A microcomputer is a computer that can perform all of its input, process, output, and storage activities by itself.

A minicomputer is often used in situations where a microcomputer is not powerful enough but a mainframe is too expensive.

A mainframe is a large, expensive, but powerful computer that can handle hundreds or thousands of connected users at the same time.

A supercomputer is the fastest, most powerful, and most expensive computer used for applications that require complex and sophisticated mathematical calculations.

Other terms related to the classification of computer systems include:

Personal computer

Stand-alone computer

Server

Client computer

Network computer

Workstation

Terminal

Embedded System

The five categories of computer are: 

Super Computers Mainframe Computers Workstation computer Micro ComputerMinicomputer 

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Supercomputer:

A computer which, among existing general-purpose computers at any given time, is http://www.answers.com/topic/superlative, often in several senses: highest computation rate

, largest memory, or highest cost.

Mainframe Computers:

a large digital computer serving 100-400 users and occupying a special air-conditioned room.

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Workstation computers:

This computer has more computing capacity in its CPU than a typical personal computer. Scientists and engineers are the main users of workstations, although people who process graphics find a workstation necessary, since the processors can handle the huge amounts of data associated with Graphic files.

Minicomputer:Minicomputer: A mid-sized computer, usually fitting within a single cabinet about the size of a refrigerator that has less memory than a mainframe.

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Micro computer:Computing device made up of one or more microprocessors, stored program memory (called read only memory or ROM), random access memory (RAM), input/output logic, and usually one or more data input (keyboard/mice/stylus) and data output (screen/printer) devices. Desktop computers (personal computers) are all also called microcomputers.

System Unit: The system unit refers to the computer itself but does not include the monitor, the keyboard, the mouse, or any other peripherals. I suppose most people will probably know what you mean when you refer to "the box," but saying "system unit" will definitely make you sound more sophisticated

:

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Parts of system unit

Mouse:A device that controls the movement of the cursor or pointer on a display screen. A mouse is a small object you can roll along a hard, flat surface. Its name is derived from its shape, which looks a bit like a mouse, its connecting wire that one can imagine to be the mouse's tail,

Monitor:

A monitor or display (also called screen or visual display unit) is an electronic visual display for a computer

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Motherboard:

The motherboard is the main circuit board in a computer. A motherboard provides a way for hardware in a computer to communicate with each other.

Keyboard: In computing, a keyboard is a typewriter-style keyboard, which uses an arrangement of buttons or keys, to act as mechanical levers or electronic switches.

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Central Processing Unit (CPU):

The CPU (central processing unit) is the part of a computer controls the interpretation and execution of instructions. Generally, the CPU is a single microchip, but that doesn't necessarily have to be the case. The Central Processing Unit (CPU) is the "brain" of the computer--it is the 'compute' in computer. Without the CPU, you have no computer. AMD, IBM,

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