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Submitted To:

Sajeeb Saha

Lecturer

Dept. of Agribusiness & MarketingFaculty of Agribusiness Management

Submitted By:

Md. Ashiqur Rahman

Reg. No.: 11-04378

Level -1 semesterII

Faculty of Agribusiness Management

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What is a Computer----- --------- 4

Computers Simplified------------ 5-6 Different Types of Computers 7-11

Other Types of Computers------ 12-13

Uses of Computers----------------- 14-21

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A computer is an electronic

device that manipulates

information, or "data." It has the

ability to store, retrieve, and

process data. You can use acomputer to type documents,

send email, and browse the

internet. You can also use it to

handle spreadsheets, accounting,database management,

presentations, games, and more.

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For beginning computer users, the computer aisles at an electronics

store can be quite a mystery, not to mention overwhelming. However,

computers really aren't that mysterious. All types of computers

consist of two basic parts:

Hardware is any part of your computer that has a physicalstructure, such as the computer monitor or keyboard.

A motherboard (hardware)

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Software is any set of instructions that tells the hardware

what to do. It is what guides the hardware and tells it how

to accomplish each task. Some examples of software are

web browsers, games, and word processors such as

Microsoft Word.

Microsoft Word (software)

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When most people hear the word "computer" they think of a personalcomputer such as a desktop or laptop computer. However,computers come in many shapes and sizes, and they performmany different functions in our daily lives. When you withdrawcash from an ATM, scan groceries at the store, or use a calculator,you're using a type of computer.

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Many people use desktop computers at work, home,

school, or the library. They can be small, medium, or largein style, and usually sit on a desk. Once you add a

monitor, mouse, and a keyboard, you have what is

typically known as a desktop computer.

A desktop computer

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The second type of computer that you may be familiar with is a

laptop computer, or laptops as they are often referred to. Laptopsare battery or AC-powered personal computers that are moreportable than desktop computers, allowing you to use themalmost anywhere. A laptop computer is sometimes called anotebook computer because of its size.

A laptop computer

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A server is a computer that "serves up" information to other computers on a

network. Many businesses have file servers that employees can use to store

and share files. A server can look like a regular desktop computer, or it can bemuch larger.

Servers also play an important role in making the internet work: they are

where web pages are stored. When you use your browser to click a link, a

web server delivers the page you requested.

A server room

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Today, there are many different types of computers that you can buy, and

some of them are even more portable than laptops. Here are a few common

examples:

The iPad, a type of tablet computer

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Tablet Computers: These use a touch-sensitive screen fortyping and navigation. Since they don't require a keyboardor mouse, tablet computers are even more portable thanlaptops. The iPad is an example of a tablet computer.

Mobile Phones: Many mobile phones can do a lot of things

a computer can do, such as browsing the internet or playinggames. These phones are often called smartphones. Game Consoles: A game console is a specialized kind of

computer that is used for playing video games. Althoughthey are not as fully-featured as a desktop computer, manynewer consoles, such as the Nintendo Wii, allow you to do

non-gaming tasks like browsing the internet. TVs: Many TVs now include applications (or apps) that let

you access various types of online content. For example, youcan view your Facebook news feed or watch streamingmovies on Netflix.

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Personal computers come in two main "styles": PC and Mac. Both styles arefully functional, but they do have a different look and feel, and many

people prefer one or the other.

A PC A Mac

PC: This type of computer began with the original IBM PC that was introduced in

1981. Other companies began to create similar computers, which were called IBM PCCompatible (often shortened to PC). Today, this is the most common type of personalcomputer, and it typically includes the Microsoft Windows operating system.

Mac: The Macintosh computer was introduced in 1984, and it was the first widelysold personal computer with a Graphical User Interface, or GUI (pronouncedgooey). All Macs are made by one company, Apple Inc., and they almost alwaysuse the Mac OS X operating system.

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Medicine and Health Care Education Home Science

Archaeology Engineering and Architectures Manufacturing Legal Practice Law Enforcement

Government The Military Music Theater and Film

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Medicine and Health Care:In medicine today, computers are used foe every thing from diagnosing illnesses to

monitoring patients during surgery and controlling permanent prostheses. Several

interesting medical applications use small, special purpose computers that operate

within the human body to help the body function better. Pacemakers, cochlear implant(special kind of hearing aid) computerized axial tomography (CAP) scans are examples.

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Education:In the last ten years, small computers have sparked a revolution in education. Everyone

from preschool children to senior citizens can now put computers to work for their own

intellectual benefits. In the classroom, students can develop sense projects and prepare

reports using computer technology. We can find computers in classrooms, museums,

libraries, and they are rapidly becoming as essential to the learning process as are

books, paper, and pens.

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Home:

Many people already have, often justifying it as an educational tool for theirchildren. Personal computers are used at home to keep records, writeletters, prepare budgets, draw pictures, prepare newsletters, connect withothers, and for playing games. The more adventurous use of computers tocontrol heating and air conditioning, answer telephone calls, safeguardthe house during vacations and so on.

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Science:Scientists use computers to develop theories, to collect and test data, and to

exchange information electronically with colleagues around the world.

Researchers can access data basis in distant locations all without going any

further than the closest computer via e-mail, internet. Scientists can use

powerful computer to generate detailed studies of how earthquakes effect

buildings or pollution effects weather patterns.

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Archaeology:

Archaeologists can use computers to peer through the wrappings of amummy (Egyptian mummies) at one time scientists use x-rays to\

examine mummies, but the results were just that x-rays, without

surface detail. With the innovation of CAT scans, archaeologists study

mummies a much finer detail without damaging them

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Engineering and Architectures:In place of drafting tables, an engineer or architect designing a product can befar more productive with a computer than with a pencil and a paper. When

you design an object with a computer, you create an electronic model by

describing all three dimensions of the object. If you want to see the object

from a different prospective, you can tell the computer display another view.

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Manufacturing:In addition to product design, computers are

playing an ever increasing rolein manufacturing. In some factories

computers control virtually every thing.

For example, take a power plant that

generate steam. In this kind of factory, a

computer monitors pressures and

temperatures at hundreds of critical points

through the plant. If the pressure of

temperature in the pipe or tank exceeds

the specified level, the computer can

regulate the process directly by turning

valves and adjusting burners.

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Thank You