- Macintosh operating system and QuickTime (a system extension that lets you play the video on the computer)
В Look back at the notes you made for Task 7 in Unit 3 (page 16) about your ideal computer system. What did you want? Read the descriptions of these computers again and choose the one that is closest to your ideal. Explain the reason for your choice.
5 Vocabulary tree Designing vocabulary trees or networks can help you build up your own mental 'maps' of vocabulary areas. Look at the list of terms in the box and put each one in an appropriate place on the vocabulary tree below. The first one has been done for you. megahertz
A friend has -written to you asking you to recommend a computer that suits his/her needs. Write a letter in reply, describing its technical features, and saying why you recommend it.
6 Type and dick! 27
7 Capture у our favourite image 32
8 Viewing the output 36
9 Choosing a printer 40
10 1/0 devices for the disabled 45
In this section you will learn how to:
describe input and output devices.
identify important keys on a keyboard and explain their functions.
distinguish between facts and opinions in advertisements about peripherals
understand technical specifications given about monitors.
use different grammatical forms to give instructions, advice or warnings.
compare different types of printers, and choose one for yourself.
understand what sort of input/output devices are used by disabled people.
Unit 6 Type and click!
1 Interacting with your computer
Input devices are the pieces of hardware which allow us to enter information into the computer. The most common are the keyboard and the mouse. We can also interact with a computer by using one of these: a lightpen, a scanner, a trackball, a graphics tablet, a joystick, or a voice recognition device.
Look at the illustrations and see if you can name them.
2 Listening А ЁЭ Listen to these descriptions of three input devices. What are they?
В Check your answers with a partner. 3 Language work In Task 2 the mouse was described like this:
This is a device for controlling the cursor and selecting items on the screen.
We could also describe it like this:
2 A mouse is a device which controls the cursor.
3 A mouse is a device which/that is used to control the cursor.
4 A mouse is a device used to control the cursor.
From these examples you can see that we can describe the function of an object in several ways:
1 for + ing (for controlling]
2 relative pronoun + verb (which controls]
3 relative pronoun + is used + to + infinitive (which/that is used to control]
4 used + to + infinitive (used to control)
Use these notes to write a similar description of a joystick.
Use: play games
The user takes hold of a lever to control/move the cursor around the screen
4 Speaking Work in pairs. Student A: turn to page 137 and Student B: turn to page 141.
5 About the keyboard A Look at the picture of a PC-compatible keyboard and identify these groups of keys. 1 Alphanumeric keys: arranged in the same order as a typewriter.
2 Function keys: used by various programs to instruct the PC to perform specific tasks, such as Save, Copy, Cut, Paste, Help, etc.
3 Numeric keypad: set of numeric or editing keys. The Num Lock key is used to switch from numbers to editing functions.
4 Editing keys: cursor and other keys usually used within word processors to page up and down in a long document or to edit text (using Insert or Delete keys).
5 Special keys: used to issue commands or to produce alternative characters in key, combinations, for example, the Alt key.
A PC-compatible keyboard
В Match these descriptions with the names of keys on the right. Then find them on the keyboard.
1 A long key at the bottom of the keyboard. Each time it is pressed, it produces a blank space. (= .....................................)
2 It moves the cursor to the beginning of a new line. It is also
used to confirm commands. (= .....................................) |
3 It stops a program without losing the information from the
character of the key). (=.....................................)
7 It produces upper-case letters, but it does not affect numbers and symbols. (=.....................................)
8 It moves the cursor horizontally to the right for a fixednumber of spaces (in tabulations and data fields).
9 They are used to move the cursor, as an alternative to the mouse (= )
С Computer systems may have different keyboard options. Here is an example. If we enter the Key Caps menu on a Macintosh in Courier and then press the Option key, we obtain the following symbols on the screen: Identify these symbols on the keyboard.
1 slash 5 yen sign
2 not equal to 6 copyright
3 plus and minus 7 number
4 trademark 8 registered trademark
A Try to answer these questions. 1 How is the mouse connected to the computer?
2 What does the mouse pointer look like on the screen?
3 What are the functions of the mouse buttons?
4 What are the advantages of a computer mouse over a keyboard?
Read the text to check your answers or to find the right answers.