Ict Terms

In: Computers and Technology

Submitted By mustbekeano
Words 6710
Pages 27
* Revision:Complete Revision Guide to CCEA ICT Contents [hide] * 1 Complete ICT Revision Guide (CCEA) * 2 Knowledge of ICT Components * 3 INPUT DEVICES * 4 OUTPUT DEVICES * 5 STORAGE DEVICES * 6 INFORMATION AND DATA * 7 DATA STRUCTURE * 8 DATA CHECKING * 9 DATA PORTABILITY * 10 DATA NETWORKS * 11 INTERNET, INTRANET AND WWW * 12 TRANSMISSION, BACKUP, TELECONFERENCING * 13 APPLICATIONS * 14 SOFTWARE PACKAGES * 15 VIRTUAL REALITY IN TRAINING, ENTERTAINMENT * 16 COMPUTERS IN CONTROL (REAL TIME) * 17 ON-LINE SERVICES * 18 SECURITY AND PRIVACY OF DATA * 19 HEALTH AND SOCIAL ISSUES * 20 EMPLOYMENT * 21 ICT IN MUSIC, LEISURE, ENTERTAINMENT |

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Knowledge of ICT Components
1. DIGITAL : • Discrete values or binary digit
2. PROCESSOR: • Control center of the computer
3. RAM:- • Volatile (temporary storage), working storage, holds programmes currently in use, • Used for writing to and reading. • Measured in gigabytes
4. ROM:- • Instructions computer needs to start, • Non-volatile (permanent storage), can’t be changed, only read • Stores the Boot up/Start up program for the PC
START UP STEPS:- • Power up • Read ROM chip • Connect all in and output devices • Load DOS from hard drive. • Load windows from hard drive
5. CACHE:- • Temporary storage, • Stores most frequently used instructions, • Is RAM memory that the computer microprocessor can access more quickly. • Volatile (128kb-512kb).
6. DOS:- Disk Operating System,
7. GUI:- Graphical User Interfaces, WIMP, user chooses option by pointing mouse at icon or menu and clicking on it with pointer, WHY IS WINDOWS USER FRIENDLY • Uses WIMP • WIMP:- Windows (programme that carries out DOS instructions), icons (Symbol that represents a program/shortcut), menus (selection of options of a list), pointers (to select options) • Help…...

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