Interaction of Hardware

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Presentation transcript:

Interaction of Hardware Components EIT, © Author Gay Robertson, 2016

How information flows - from the user’s point of view the user will open a program the user will input data the user will change the data the data will be saved onto the hard disk and also onto a floppy disk the data will then be printed

How the information flows - from the computer’s point of view - a copy of the software program is transferred from storage on the hard disk into RAM and program is shown on the monitor (what is currently required for processing has to be in the temporary storage area - random access memory)

data is input using the keyboard (data is stored in RAM ready for processing, and displayed on the Monitor)

the user then decides to edit or format the data using the keyboard and/or the mouse (The CPU does the work by following the program instructions given by the user eg insert a picture or use a fancy print style or font CPU sends results of processing to monitor eg displaying the edited notice RAM temporarily holds the editing changes you have made)

copy of the file is saved onto the hard disk, or solid state drive, or portable drive (copied from RAM – temporary storage area to permanent storage area a copy could also be saved onto a USB flash drive – or memory card - to provide back up copies or to allow the data to be taken to another computer to be used)

the CPU follows the program instructions and prints the data using the printer (copy of data is sent from RAM to printer memory then printer prints the hard copy of the information)

The flow of data between the components & the CPU allows the PC to complete the processing cycle Keyboard Mouse (Input devices) Hard disk Portable disk USB drive (Storage devices) RAM CPU (Processing & Internal memory devices) Monitor (screen) Printer (Output devices)

The flow of data between the components and the CPU allows the PC to complete the processing cycle Keyboard (Input devices) Mouse (Input devices) CPU (Processing device) Hard disk (Storage devices) RAM (Internal memory device) Printer (Output devices) VDU (screen) (Output devices)

The flow of data between the components allows the PC to complete the processing cycle:

End of presentation Next steps … Go back to the workbook You will see that there are Study Notes on the Interaction of components End of Section 1 Common computing devices, hardware & terminology to assist you to process data