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the prefixes e- and cyber-
1- e- means electronic , for example : e-pal
2- cyber- comes from cybernetics , for example : cybercafe

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1- online : friends , encyclopedia
2- take : action , photos
3- email : friends
4- upload: photos
5- portable : player
6- official : website

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1- cpu: registers , computer brain , and Alu
2- main memory : Ram , and gigahertz
3- peripherals: DVD , webcam , and hard drive

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a computer consist of : hardware and software

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peripherals
1- input devices :
•mouse
•keyboard
•camera
2- output devices :
•monitor
•printer
3- storage media :
•magnetic : hard drive
•opitical : DVD
•flash : memory and pen drive

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Collocations :

1- verb+noun : surf the web
2- verb+particle : hack into a computer
3- adverb+adjective: highly sensitive information
4- adjective+noun: up-to-data information

Countable and Uncountable

1- count (file, program,system)
2-uncount(advice,damage,homework)

Describing functions

1- for+gerund : for controlling
2- used+to : used to control
3- work by+gerund: works by detecting

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1- Ram :
random  acsis memory
2- Rom : read only memory
3- what type of memory is temporary? Ram
4- what type of memory is prement ? Rom
5- what is a bus ? electrical channels which allow devices inside the computer to communicate
6- clock speed is measured in gigahertz(GHz)

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1- CPU : central processing unit
2- PIN: personal identification number
3- GUI: graphical user interface
4- WIMP: windows icons menus and pointer
5- http:// : Hypetext Trasfer Protocol
6- www : world wide web
7-ftp:// : file transfer protocol

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1. keep,save : store

2. execute,do: perform

3. monetary: financial

4. screen : monitor

5. give: presentations

6. keep:records

7. access:databases

8. transfer:money

9. clear;easy to see : sharp

10. shows: displays

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Software into two basic categories:

1. System software

2. Application software

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(The keyboard)

1-Cursor control keys

2-Alphanumeric keys

3-Function keys

4-Dedicated keys

5-Numeric keypad