Technology

We live in the age of technology. Every day, new technology appears, ranging from mini-CDc that contain entire encyclopedias to giant space telescopes that can send photographs of distant stars back to Earth. OF all the new technological wonders, Computers have probably had the greatest influence on the daily lives of average people. Through computers, we can talk to people in any country, research any topic, work, shop, bank, and entertain ourselves.

Berry designed and built the first electronic digital computer, or ABC, provides the foundation for advances in electronic digital computer."
This revolutionized communication and business practices in the past twenty years.

Comparison

In the past before the computer people used their mind only to keep their especially data. Also when they wanted to communicate or sent letters to their friends it took more days and sometimes it took weeks. But after the computer invention people can send e-mail, letters, and any information in a second. While in the past it took many days and weeks.

Also students when they wanted to write a report or when they wanted to read any information, they couldn't find the information faster and they researched only with the books. But today everyone can research any topics which he wants to write about it or read and get any information. So the computers make the life today easier than in the past.

important effect of computer

The most important effect of computer has been to expand our ability to communicate with the outside world. Besides improving communication, computers have made it possible to do business from home. For example, you can buy airline tickets, send flowers to friends, pay your bills, buy and sell stock at any time of the day.

The negative effects of using computers

The negative effects of using computers

There are some of the negative effects of using computers. First, computers can damage eyes if use it for long hours especially during at night. Second, computers are used in developing dangerous nuclear weapons. Third," using e-mail and other techniques on the internet, scam artists are employing a technique know as phishing to try to steal your personal information, such as credit card numbers, banking information, and passwords."

The negative effects of using computers

A separate impact on the labor force is that some companies are outsourcing jobs to foreign countries instead of keeping their homeland labor force employed.
Fifth, Prolonged or improper computer use can lead to injuries or disorders of the hands, wrists, elbows, eyes, neck, and back.

Sixth, Computer manufacturing processes and computer waste are depleting natural resources and polluting the environment. The amount of resources required to manufacture a personal computer equals that of a mid-sized car.

computer age

computer age

In brief, the computer age has arrived, and it is changing our lives. Computers have made communicating and doing business faster and more convenient, and they have greatly increased our access to information. By using computer you can study, have good friends and good relationships, ask whatever you want in a forum or a site and people will answer you, and you can enjoy using so many applications and discover your talents

A System

A basic definition of a system: A group of interrelated or interacting elements forming a unified whole
Some examples…
The solar system
The production system of a factory
The biological system of the human body

A system involves transformation

The Processing Cycle

Input, processing and output, together with storage is often called the
Information Processing Cycle
or processing cycle
or the IPO cycle

A simple IPO

Shopping
Barcodes scanned (input)
Prices, tax and total calculated (processing)
Amount due displayed (output)
Transaction saved (storage)
Communication may also be a part of this
Shop-Bank for card transaction

Components of a computer based system

1-Data
2-Software
3-Hardware
4-Procedures
5-People
6-Connectivity

Data

Data is a collection of unorganised facts, unprocessed items, which can include:
Letters, numbers
Line thickness, magnetic strips
Data is an input in the Information Processing Cycle

Information

Information is data organised and given meaning, which can include:
The letter, report, essay or spreadsheet
The text printed on the sales docket

Categories of Computers

Industry experts typically classify computers in seven categories:
1.Personal computers. (PC)
2.Mobile computers and mobile devices.
3.Game consoles.
4.Servers.
5.Mainframes.
6.Super computers.
7.Embedded computers.

Personal Computer (PC)

Essentially a single-user computer
Two types of personal computers are:
Desktop computers: designed so the system unit, input devices, output devices, and any other devices fit entirely on or under the table.
Notebook Computers (Laptop): designed to fit on user’s lap. Notebook computers are thin and lightweight.

IBM-compatible

IBM-compatible refers to any personal computers based on original IBM personal computer design, IBM-compatible computers use Windows operating system. (ex. : Dell, HP, Toshiba)
nApple computers and Blackberry are not IBM-compatible.
nIn common use, PC refers to an IBM-compatible, but to a computing professional, includes above, and also Apple computers.

Mobile Devices

Mobile devices are small enough to carry in a pocket.
There are three types of mobile devices:
Handheld computer: is small enough to fit in one hand.
PDA (Personal Digital Assistance): provide personal organizer functions such as a calendar, address book, calculator , notepad, word processing …etc
qSmart Phone: is an internet-enabled telephone that usually provide PDA function.

Technolog

Technology is one of the most important things
in the word because it helps people to make a lot of operations easy . Also it help people to do thing in a faster way and shorter time
So there will be no more time wasting . For that people are trying to develop this technology to make it more useful and more complete to cover all whet people need all around the word .One of the most famous technologies in the word is computer

what does computer mean

The following points define a computer:
Electronic device
Uses instructions stored in its own memory
Accepts data
Processes data (according to specified rules)
Produces results
Stores results for future use

Computer is a device or an electronic system that contains of input units ,processing units and output units

Computer Functions

Functions
Input
Output
Process
Storage
•Based on a set of instructions, process input data into output data