- •Unit 1 computer applications
- •Computers
- •What can computers do?
- •Unit 2 computer essentials
- •What is a computer?
- •Unit 3 inside the system
- •What’s inside a pc system?
- •Structure of the processor
- •Unit 4 bits and bites
- •Units of memory
- •Unit 5 magnetic drives
- •Technical details
- •Unit 6 optical breakthrough
- •Optical disks and drives
- •Iomega's removable drives
- •Unit 7 input / output devices
- •Voice recording device h. Keyboard
- •Unit 8 capture your favourite image
- •Vivid easy-to-use faster fashionable wide shots
- •Unit 9 viewing the output
- •The monitor
- •Unit 10 choosing a printer
- •Types of printers
- •Unit 11 operating systems Exercise 1.Look at the diagram below. What is the function of the operating system?
- •Exercise 4. Language work
- •Unit 12 the graphical user interface
- •Unit 13 a walk through word processing
- •Word-processing facilities
- •Unit 14 spreadsheets
- •Unit 15 databases
- •Basic features of database programs
- •Exercise 6. Writing
- •Unit 16 faces of the internet
- •Exercise 2. Maybe we can find it on the Internet.
- •Exercise 3. Reading.
- •Internet software
- •Irc, audio and video chatting
- •MIrc for Windows is a typical Internet relay chat program. You can get it at http://www.Mirc.Co.Uk/
- •Unit 17 programming and languages
- •Programs and programming languages
- •Exercise 3. These are answers to questions about the text. Write the questions.
- •Variables and the Declaration Statement
- •Unit 18 computer networks
- •Computer networks
- •Network configurations
- •4 Bus/Ethernet
- •Unit 19 computer viruses
- •How computer viruses work
- •Unit 20 computers in the office
- •Information systems
- •Using Computers
- •Information Technology (it)
- •Exercise 5. Link each statement (1-) with a purpose (a-j).
- •Exercise 6. Match the words from the box with their definitions.
- •The future? We’re virtually there!
Variables and the Declaration Statement
А variable is а quantity that is referred to by name, such as а, b, с, d, and average in the above program. А variable can take on many values during program execution, but you must make sure that they are given an initial value, as С does not do so automatically. However, before variables can be used in а program, they must be declared in а type declaration statement.
The Function _______ must appear only once in а program.
/* CALCULATE AVERAGES */ is а _______ line.
The statement float а,b,c,d,average; is а _______ statement.
The program below contains _______ function statements.
The assignment statements are on lines _______ and _______.
The main part of the program is enclosed within _______.
Each line of any С program must end with а _______, which acts as а statement _______.
If you forget to include the correct punctuation, the _______ will produce a _______ error.
А quantity referred to by name is known as а _______.
А _______ _______ statement must be used to declare variables.
B Find words in the text which mean:
brackets 4. recognised
not fixed 5. completed
systematically check 6. starting
Exercise 7. The table below shows С's relational operators. Fill the gaps in the table.
С symbol |
Meaning |
= = |
equal tо |
< |
|
|
equal to or less than |
> |
|
>= |
|
!= |
|
|
|
Exercise 8. Using the completed table from Exercise 7, write sentences to illustrate the following:
a! = b 4. a >= b
a > b 5. a < b
a <= b 6. a = = b
Exercise 9. Read the statements below. Which do you agree with more? Why?
'Learning а programming language is like learning any natural language. The only difference is that you are communicating with а machine instead of another person.'
'I get annoyed when I hear people comparing programming languages with natural languages. They have almost nothing in common.'
Exercise 10. Word-play
Solve the anagrams in the right-hand column and match them with the words in the left-hand column to complete the phrases.
The first one is done for you.
high-level a. mestnttae
machine b. thirmacite
systems c. peat
object d. taporeo
linkage e. omelud
magnetic f. egguanal language
binary g. trodite
declaration h. deco
comment i. enil
relational j. nituroe
Unit 18 computer networks
Exercise 1. Try to answer these questions.
What is а LAN?
What is а WAN?
What is а distributed system?
Exercise 2. Reading.
A Before reading the text, match these words and phrases with their definitions.
protocol а. analyze the syntax of а string of input symbols
bulletin board b. a teleconferencing system allowing users to read messages left by other users
user interface с. agreement governing the procedures used to exchange information between co-operating computers
make а query d. means of communication between а human user and а computer system
parse е. taking place at exactly the same time as something else
synchronous f. request а search
B Read quickly through the text below, then match each paragraph with the appropriate summary.
Network uses, past and present
How distributed systems work
Networks and the future
What networks are and how they operate
The growth of networks, past and present