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VI. Read the text without a dictionary.

Computer Development History

The word computer comes from a Latin word which means to count.

A computer is a device that has the ability to take in, store and process data in a very short time automatically.

The history of computers began in 1643 when the French mathematician and philosopher Blaise Pascal invented the first adding machine. It was followed by the first multiplying machine which was invented in 1671 by another mathematician -- Y.W.Leibnitz. The idea of an automatic machine which could not only add, subtract, multiply and -divide but perform a sequence of steps automatically belonged to Charles Babbage, a professor of mathematics at Cambridge University, England.

Modern era of digital computers began in the 40-s when Howard Aiken, a professor of Harvard University, realized Babbage's ideas. This machine performed many useful operations, but the speed of calculations was limited. Nowadays electronic computers based on solid-state elements and integrated circuits made it possible to solve very complicated problems within a very short time. So, the invention of computers is one of the greatest achievements of mankind.

VII. Topics for discussions.

  1. Speak about the role of computers in modern society.

  2. Give some information on the history of computers.

Use the following words:

to be widely used, to solve complicated problems, to provide information, to improve man's life, to perform operations, to be based on, speed of calculations.

Unit II

WHAT CAN COMPUTERS DO?

Computers and microchips have become part of our everyday lives: we visit shops and offices, which have been designed with the help of computers, we read magazines, which have been produced on computer, we pay bills prepared by computers. Just picking up a telephone and dialing a number involves the use of a sophisticated computer system, as does making a flight reservation or bank transaction. We encounter daily many computers that spring to life the instant they're switched on (e.g. calculators, the car's electronic ignition, the timer in the microwave, or the programmer inside the TV set), all of which use chip technology.

What makes your computer such a miraculous device? Each time you turn it on, it is a tabula rasa that, with appropriate hardware and software, is capable of doing anything you ask. It is a calculating machine that speeds up financial calculations. It is an electronic filing cabinet which manages large collections of data such as customers' lists, accounts, or inventories. It is a magical typewriter that allows you to type and print any kind of document — letters, memos or legal documents. It is a personal communicator that enables you to interact with other computers and with people around the world. If you like gadgets and electronic entertainment, you can even use your PC to relax with computer games.

NOTE:

tabula rasa — чистая доска