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The Pros and Cons of Using the Internet
темы: Компьютеризация
Do you use the Internet? If not, would you like to? Which of these things do you (or would you like to) use the Internet for? finding information playing games joining chat groups on-line shopping sending e-mail joining newsgroups Read the list of points about the...
At midnight on the same day, there were four e-mails waiting on Alan Marshall’s server.
темы: Компьютеризация
Subject Author Time Date Where were you? You’re a genius! Disaster! Please write Elizabeth Marshall Daisy Farrow Pete Bradley Daisy Farrow 8:56 14:28 18:54 23:00 12.12 12.12 12.12 12.12 Subject : Where were you? From: Elizabeth Marshall H...
The methods of mailing lists
темы: Компьютеризация
How much do you know about mailing lists? Try to fill in the missing words. Then read the text more carefully. 1. A ............................. is a discussion forum where participants subscribe to a list and receive messages via e-mail. 2. In a discussion list you receive the messages direc...
NSA CONSULTANT’S SON IS COMPUTER SABOTEUR
темы: Компьютеризация
“Worm” came from graduate student 1. Read this news report and discuss the questions that follow. A court heard today how a Cornell University graduate student, Robert T. Morris Jr. (25), infected a host of government and educational computer centres with a computer virus, known as a “wo...
of technical terms and abbreviations
темы: Компьютеризация
A access v connect to, or get (information) from, a system or a database access control a feature of a computer security system which prevents unauthorized users from accessing a system Access request a user request for data from a database accumulator a register that holds the result...
Unit 1 Radio engineering systems
темы: Компьютеризация
Unit 1 Radio engineering systems 1. Memorize the words: To travel – распространяться transmitting range – дальность передачи a receiver – приемник a transmitter – передатчик a high-frequency oscillator – высокочастотный генератор колебаний an oscillatory circuit – колебательный контур a ca...
Communication systems and information theory
темы: Компьютеризация
Communication theory deals primarily with systems for transmitting information from one point to another. The source output might represent a voice waveform, a sequence of binary digits from a magnetic tape, he output of a set of sensors in a space probe, or a target in a radar system. The channel...
Unit 2 Radio transmitters and receivers
темы: Компьютеризация
1. Memorize the words: Carrier wave – несущая волна sine - синус refer – отсылать; направлять; справляться; упоминать slight – тонкий; хрупкий; легкий; незначительный power supply – источник энергии to amplify – усиливать omnidirectional – действующий по всем направлениям transvers...
Design and principle of operation
темы: Компьютеризация
The principle of operation of the super heterodyne receiver depends on the use of heterodyning or frequency mixing. The signal from the antenna is filtered sufficiently at least to reject the image frequency and possibly amplified. A local oscillator in the receiver produces a sine wave, which mix...
Television and telecommunication
темы: Компьютеризация
Television is a widely used telecommunication medium for sending (broad- casting) and receiving moving images, either monochromatic (black and white) or color, usually accompanied by sound. In its early stages of development, television included only those devices employing a combination of opti...
