Basic ICT Concepts

By : Ms. Kalpani ManatungaGCE (A/L) ICT Training for Teachers

Data Vs. InformationGCE (A/L) ICT Training for Teachers

1200 100West Charles Mann79154 TM ShoesMonthly Sales Report for West RegionSales Rep: Charles MannEmp No. 79154Item Qty Sold PriceTM Shoes 1200 $100

Data is a representation of a fact, a number, a word, an image, a picture or a sound.They refer to an elementary description of things, events, activities and transactions that are recorded, classified, and stored, BUT NOT ORGANIZED to convey any specific meaning.Information is data that have been organized to provide a meaning and value to the recipient.

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Qualitative Vs. Quantitative GCE (A/L) ICT Training for Teachers

Information GenerationGCE (A/L) ICT Training for Teachers

Characteristics of information:RelevantCompleteAccurateCurrent

Data Information KnowledgeGCE (A/L) ICT Training for Teachers

Quality of Information is the fitness of information to be used.

Qualities of information:MeaningfulFascinatingUpdates prior knowledgeHelp in decision making

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Data Processing CycleGCE (A/L) ICT Training for Teachers

DataInformationProcessInformation?processed outcome of data. (it is derived from data)

Value of InformationValue of information depends on its relevance.Information has the highest value at the moment those are created or at the moment that is received.Value of information gradually fades away with the time being.GCE (A/L) ICT Training for Teachers

Manual Data ProcessingRelies on people processing data or information manually.Consumes lot of timeLess efficientLess accurateNot reliable

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Components of a Computer systemHardwareEg: Keyboard, mouse, monitorSoftwareEg: Ms Office packageFirmwareEg: boot up programLiveware Eg: usersGCE (A/L) ICT Training for Teachers

Classification of HardwareGCE (A/L) ICT Training for Teachers

Input devicesKeyboard, pointing devices, scanner, web camOutput devicesMonitor, printerListening devicesSpeakers, headsetMemory devicesRAM, ROM, H/D, pen drives, discsControl & processing devicesCU, ALU, registers

Classification of SoftwareSystem s/wOperating systemsUtility programs like disc cleaners, anti-virus, etc..Application s/wWord processing applicationsDBMSGCE (A/L) ICT Training for Teachers

Copyrighted s/w (proprietary s/w)Windows operating systems, Macromedia, etc..Open source s/wOpen office, Linux, Mozilla

Software piracy making illegal copies of softwarePrivacy protecting personal informationGCE (A/L) ICT Training for Teachers

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