«Утвержден» Научно-методический совет Джизпи за№ от 2021 г. Председатель совета

2. Read the text again and match the words with their definitions.

1. 
   prototype
   
2. 
   perforated
   
3. 
   soldering
   
4. 
   to fail
   
5. 
   peripheral
   
6. 
   to decode
   

a □ to convert an electrical signal into another codeb b □ the act of joining metallic parts

с □ an original model used to test a circuit or a

product

d □ to perform ineffectively

e □ having a series of holes

f □ an auxiliary device that works with a computer

3. Read the text about mobile phones and complete it with the words in the box. Then listen and check.

A cellular phone (or mobile phone) is designed to give the user freedom of (1)______________________while

using a telephone. It uses (2) _______________________ signals to communicate between the phone and the (3) ___________________. The server area is divided into smaller areas called cells and an antenna is placed

within each cell and connected by telephone (4) ____________________. These lines connect cellular phones

to one another: a computer selects the antenna closest to the telephone when a call is made. If the phone moves to one serving (5) ________________________ to another, the radio signal is

transferred to the actual cell without interrupting the conversation.

The circuit board is the heart of the system. A chip translates the outgoing and incoming (6) ________________________ from analogue to digital and back

from digital to analogue. The (7) ________________________handles all the

functions for the keyboard, the display and the loudspeakers, and it controls the signal to the base station.

Other (8) ___________________ memory chips provide storage for the