5. Put the key names in the table according to their form:

TAB, BKSP, ENTER, CTRL, SHIFT, CAPSLOCK, ALT, HOME, PGUP, DEL, END, PGDN, BREAK, INS, PAUSE, PRTSCR, ESC, NUMLOCK

Separate words		Word-combinations
Abbreviations	Full names	Abbreviations	Full names

7. Translate the names of the keys on the extended keyboard and determine their functions:

Letter keys, punctuation keys, function keys, numeric keys, arrow keys, ALT, CTRL, DELETE, ENTER, RETURN, NUM LOCK, CAPS LOCK, BACKSPACE, INS, PAGE UP, PAGE DOWN, HOME, END

5. Find the answers in the text:

1. How do we use the letter, punctuation keys and a spacebar on the extended and standard keyboards?

2. What do you use the keyboard for?

3. Using what keypad we can type numbers?

4. What buttons do help you to move around the screen?

5. Where are arrow keys located on standard (extended) keyboard?

6. What do function keys do?

7. Where function keys are located on the keyboards?

8. How do you use additional keys?

9. Why do you need ports?

9. Make up the story about the keyboards and their using. Unit III

1. Read the text, write down the new words. Learn the words.

Additional hardware

In addition to the basic components, most computer systems include other hardware, such as a printer, a mouse, and possibly a modem.

Peripheral devices of the PC are connected to its interfaces and intended for execution of auxiliary operations. Due to them the computer system gains flexibility and scalability.

Device of command handle – the mouse and special manipulators: the trackball (installed permanently, the ball is actuated by a palm), pen mouse (clone of a ball pen), the infra-red mouse (wireless link with a system unit.).

Devices of input of graphic data are scanners (intended for input of the graphics information on paper), data tablets (intended for input artistic graphic information) and digital cameras.

As the output device of the data, in addition to the screen monitor, use printing stations – printers, permitting to receive copies of documents on a paper or transparent carriers. By a principle of operation, distinguish matrix, laser, and ink-jet printers. A printer prints the information processed by your computer. Printers vary in printing speed and output capabilities. For example, some letter–quality printers can print high–quality text quickly; some dot matrix and laser printers can print both text and graphics.

The mouse is the control unit manipulation type. As against the keyboard the mouse cannot be used on a straight line for input of the sign information – the principle of handle is event. Movements of the mouse and clicks of buttons are events.

By using a mouse, you can move a pointer on your screen. You change the position of the pointer by moving the mouse across your table or desktop. You can also use a mouse to select an item by pointing to it and then clicking a button.

Modem – the device intended for information interchange between remote computers. Key parameters of the modem: productivity (bits/s), supported communications protocols and error corrections, the bus interface (ISA or PCI).

A modem connects your system to a telephone line so that you can communicate with another computer in another building, or even across the country. You can use a modem to receive business information from services like the Dow Jones News Retrieval and CompuServe Information Service.