Listening

Date: 2015-10-07; view: 508.

Introduction

Unit 10 Data Communications

(tenses - present)

This unit deals with the transmission of data between computers. Data communication networks use modems to change data (bits of information) into sound signals (sound waves). These signals can then be sent down a normal telephone line. When they reach the other end, another modem changes them back into data. The receiving computer can the: store the information on file (a disk will usually hold many files — each file will hold a certain type of information) or display the information on screen.

You are going to hear the administrative manager and communications engineer of an international firm discussing a data communication problem. This firm sends documents (reports, contracts, etc.) to their clients by connecting up computers. As you listen, label the diagrams below: