INTERNET ACCESS

4. Underline participle II performing the function of an attribute

1. Programs and data can be entered into its memory and processed information can be displayed or transmitted in some form to the microprocessor user.

2. The VDU may be part of a self-contained microcomputer, with all the necessary circuitry contained in the case holding the CRT.

3. The output from the keyboard is decoded into a form suitable for the computer being used.

4. This function is usually carried out within the VDU which may also have its own buffer, so that information keyed in is not transmitted immediately. Other more sophisticated features may be available on more expensive VDUs.

5. With the latter facility, changes may be made to information displayed on the screen.

6. Often these facilities will be under the control of programs stored in ROMs on the VDU board.

7. Additionally, a light pen may be used as an input device by pointing it to the required on the screen.

8. Magnetic disks have data recorded on them in a series of circular tracks.

9. Indexes may be used to enable the required data to be located or data may be retrieved randomly by using relative addressing, in which data is recorded in known positions.

10. The units consist of a hard disk totally enclosed and sealed in a chamber.

11. It would ruin the head and disk resulting in the loss of all the information held on the disk.

12.Printers are used to spell out the information needed.

5. Underline the words with the ending – ing performing the function of an attribute

1. There are various types of peripheral equipment that may be attached to microcomputers including keyboards, visual display units (VDUs), magnetic recording devices, and printers for output.

2. Different sensors and actuators may be linked (interfaced) to the microcomputer for controlling instruments and machines.

3. These units have a cathode-ray tube (CRT) for displaying information.

4. The VDU may be part of a self-contained microcomputer, with all the necessary circuitry contained in the case holding the CRT.

5. Read/write heads are moved to the appropriate track for recording or accessing data under hardware/software control.

6. This ensures that extraneous particles of dust or dirt cannot get into the very small gap between the fast spinning disk and the floating read/write head, as this would cause a head-crash which would ruin the head and disk resulting in the loss of all the information held on the disk.

7. Laser printers, for example, are capable of printing miles of documents without stopping.

INTERNET ACCESS

The term Internet access refers to the communication between a residence or a business and an Internet Service Provider (ISP) that connects to the Internet. Access falls into two broad categories: dedicated and dial-up.

With dedicated access, a subscriber’s computer remains directly connected to the Internet at all times by a permanent, physical connection. Most large businesses have high-capacity dedicated connections; small businesses or individuals who desire dedicated access choose technologies such as digital subscriber line (DSL) or cable modems. A DSL sends data across the same wires that telephone service uses, and cable modems use the same wiring that cable television uses. In each case, the electronic devices that are used to send data over the wires employ separate frequencies or channels that do not interfere with other signals on the wires. Thus, a DSL Internet connection can send data over a pair of wires at the same time the wires are being used for a telephone call, and cable modems can send data over a cable at the same time the cable is being used to receive television signals. The user usually pays a fixed monthly fee for a dedicated connection. In exchange, the company providing the connection agrees to relay data between the user’s computer and the Internet.

Dial-up is the least expensive access technology, but it is also the least convenient. To use dial-up access, a subscriber must have a telephone modem, a device that connects a computer to the telephone system and is capable of converting data into sounds and sounds back into data. The user’s ISP provides software that controls the modem. To access the Internet, the user opens the software application, which causes the dial-up modem to place a toll-free telephone call to the ISP. A modem at the ISP answers the call, and the two modems use audible tones to send data in both directions. When one of the modems is given data to send, the modem converts the data from the digital values used by computers into tones. The receiving side converts the tones back into digital values. Unlike dedicated access technologies, a dial-up modem does not use separate frequencies, so the telephone line cannot be used for regular telephone calls at the same time a dial-up modem is sending data.

TASKS

1. Transcribe the words and give their Russian equivalents

1. term (n.)

2. refer to (v.)

3. residence (n.)

4. subscriber (n.)

5. permanent (adj.)

6. desire (v.)

7. wire (n.)

8. interfere with (v.)

9. company (n.)

10. convert (v.)

11. cause (v.)

2. Translate the following word combinations

1. Internet Service Provider (ISP)

2. dedicated access

3. dial-up access

4. high-capacity connection

5. digital subscriber line (DSL)

6. cable modem

7. software application

4. Choose the word combinations which are close in meaning to the underlined ones.

1. The term Internet access refers to the communication between a residence or a business and an Internet Service Provider (ISP) that connects to the Internet.

· deals with

· means

· provides

· is concerned with

· interprets

· studies

2. In exchange, the company providing the connection agrees to relay data between the user’s computer and the Internet.

· to transmit data

· to receive data

· to collect data

· to send data

· to manipulate data

· to analyze data

5. State the functions of the underlined words and translate sentences into Russian

1. With dedicated access, a subscriber’s computer remains directly connected to the Internet at all times by a permanent, physical connection.

2. The user usually pays a fixed monthly fee for a dedicated connection.

3. In exchange, the company providing the connection agrees to relay data between the user’s computer and the Internet.

4. When one of the modems is given data to send, the modem converts the data from the digital values used by computers into tones.

5. The receiving side converts the tones back into digital values.

6. Write out the sentences from the text which correspond the given pattern and translate them

Pattern: To use the Internet, a user must have access to the Internet.

Для того чтобы пользоваться Интернетом, пользователь должен

иметь доступ в Интернет.

7. Read and translate the text.

TEXT 2

Date: 2015-01-02; view: 1071