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4. Find sentences with the following phrases in the text. Arrange them as they appear in the text:

  1. безошибочное обслуживание

  2. система контроля

  3. невидимый инфракрасный лазерный луч

  4. считыватель штрих кода

  5. двоичный код

  6. коммерчески успешный

5. Answer the questions using the information in the text:

  1. What is a barcode?

  2. What does a barcode reader consist of?

  3. When did the idea of a barcode appear?

  4. Where were barcodes used at first?

  5. What can checkout computers do?

6. Decide if the following statements are true or false. Correct the false ones:

  1. A barcode is a series of parallel bars or lines of the same width that is used for entering data into a computer system.

  2. A barcode reader consists of a light source, a lens and a light sensor translating optical impulses into electrical ones.

  3. Silver and Woodland patented their invention in 1947.

  4. Barcodes became commercially successful when they were used to label railroad cars.

  5. There are four kinds of barcode readers: a handheld scanner, a pen scanner, a PDA scanner and an automatic reader.

  6. The computer keeps a complete record of purchases but can’t work out stock levels.

7. Find words in the text with the following meaning:

  1. an idea or action resulting from such a state

  2. either of the two digits 0 or 1, used in binary notation

  3. without error, precise

  4. specific, special

  5. the parts of a picture that appear most distant

  6. the linear measurement of something from side to side

  7. a group of similar or related things, usually arranged in order

8. Arrange the steps in the operation of a supermarket checkout system (a till) in the right order. Prepare a description of its operation in the Present Passive:

  1. the scanner converts the barcode into electrical pulses

  2. the branch computer sends the price and description of the product to the till

  3. the scanner reads the barcode

  4. the branch computer records the sale of the product

  5. the till shows the item and price

  6. the assistant scans the item

  7. the scanner sends the pulses to the branch computer

  8. the till prints the item and price on the paper receipt

  9. the branch computer searches the stock file for a product matching the barcode

Text 3. Netbooks

1. Discuss the following questions in pairs:

  1. What do you know about Intel Corp.?

  2. What does the term “netbook” mean?

  3. Would you like to have a netbook? Why?

  4. Do you know how much they cost?

2. Match the following words and word combinations with their definitions and translate them into Russian:

  1. wireless networking

  1. the standard typewriter keyboard

  1. RAM

(random access memory)

  1. text editing and storage functions using computer software

  1. QWERTY keyboard

  1. a screen-oriented interactive program enabling a user to lay out financial data on the screen

  1. word processing

  1. the most common computer memory which can be used by programs to perform necessary tasks while the computer is on

  1. energy hog

  1. an option that is selected automatically unless an alternative is specified

  1. operating system

  1. something that wastes energy

  1. spreadsheet

  1. remote information transmission system

  1. default option

  1. software that controls the execution of computer programs and may provide various services