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VI. Main idea Which statement or statements best express the main idea of the text? Why did you eliminate the other choices?

 1. The digital computer is the most efficient one.

 2. Computers differ from one another in terms of operating principles.

 3. All computers have the same basic components.

 4. The hybrid computer is the easiest to operate.

VII. Understanding the passage Decide whether the following statements are true or false (T/F) by referring to the information in the text. Then make the necessary changes so that the false statements become true.

T F

  1. Three general types of computers differ from one another only in equipment design.

  2. The basic job of computers is the processing of information.

  3. The digital computer gets its name because the data represented to it are made up of a digit code.

  4. The results of arithmetic and logic operations performed by digital computers require further processing by an operator.

  5. The hybrid computer combines the operating principle of the digital computer and equipment design of the analog one.

  6. Computers can be defined as devices which accept information in the form of instructions, perform various operations and then supply the results of these operations.

VIII. Locating information Find the passages in the text where the following ideas are expressed. Give the line reference.

…… 1. The hybrid computer is a combination of both digital and analog computers.

…… 2. Computers use special instructions to solve problems.

…… 3. Analog and digital computers have different operating principles.

…… 4. In recent years hybrid systems have become widely used in military industry.

…… 5. The results of the operations performed by digital computers can be used by people without any further processing.

IX. Contextual reference Look back at the text and find out what the words in bold typeface refer to.

1. … that solve problems …

2. … It counts, lists, compares …

3. … within its memory …

4. … the formerthe latter

5. … it utilizes data …

(l. 2) ………………………

(l. 11) ………………………

(l. 13) ………………………

(l. 20) ………………………

(l. 22) ………………………

X. Understanding words Refer back to the text and find synonyms for the following words.

1. kind

2. usage

3. to save

4. to carry out

5. different

(l. 5) ………………………

(l. 8) ………………………

(l. 13) ………………………

(l. 18) ………………………

(l. 18) ………………………

Now refer back to the text and find antonyms for the following words.

6. like

  1. constant

  2. incomprehensible

  3. drawback

10.general

(l. 9) ………………………

(l. 10) ………………………

(l. 16) ………………………

(l. 19) ………………………

(l. 21) ………………………

XI. Word forms Choose the appropriate word to complete the sentences. Make sure to use the correct form.

  1. operation, operate, operator, operating

a. A computer can perform mathematical … very quickly.

b. One of the first people to note that the computer is malfunctioning is the computer … .

c. The job of a computer … is to … the various machines in a computer installation.

d. The new machines in the computer installation are not yet … .

  1. solution, solve, solvable, solver

a. It may take a lot of time to find a … to a complex problem in programming.

b. A computer can … a problem faster than any human being.

c. A computer has often been referred to as a problem … .

  1. comparison, compare, comparable, comparatively, comparative

a. Renting a computer isn’t … to owning one.

b. Computers can … numbers.

c. There is sometimes very little … to be made between two different brand-name microcomputers.

d. The difference in price of microcomputers from different manufactures can be … small.

XII. Content review a. Match the following words in column Awith the statements in columnB.

A

B

1. digit

a. a letter, mark or sign

2. program

3. information

b. facts or details that tell you something about a situation

4. device

5. application

c. one of the written signs that represent the number 0 to 9

6. character

d. a group of related parts working together

7. system

e. a set of instructions given to a computer

f. practical purpose for which a machine can be used

g. a piece of equipment for a particular purpose

b. Complete the following statements with appropriate words from the box. (Some can be used more than once.) Make sure you use the correct form, i.e. singular or plural.

program

digit

data

digital

continuous variable

computer

device

information

analog

operation

hybrid

… can be defined as … which accept … in the form of instructions called a … and characters called …, perform mathematical and logical … on the information, and then supply results of these … .

… can be of 3 types: …, … and … . The … … gets its name because the … that are presented to it are made up of a code consisting of … . The … … operates on … . The … system is a computer which has combined the features of both the … and … computers. It is used mainly in scientific research.

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