Published on January 7, 2014
P3-Represent data flow around the computer By George Smith-Moore
Block diagram of the computer system. Processing Input Output Input devices: Output devices: It is used to insert data into a computational device Mouse Keyboard Joystick Controller It is used to retrieve information from a computational device CPU Output Input Memory Monitor Projector Speakers
CPU MEMORY INPUT AND OUTPUT It is used by the CPU to communicate with other devices Address BUS It is used to specify a physical address for the CPU Data BUS It allows the transfer of data between two components on the motherboard, or between two computers. System BUS Control BUS
The Northbridge connects with the faster I/O’s such as the RAM and the AGP, the Northbridge is bigger looking than the Southbridge, the Southbridge connects with the slower I/O’s such as the USB and the BIOS. AGP The Northbridge and Southbridge refer to the chipsets. CPU F S B RAM North Bridge (GPU) Legacy PCI(e) BIOS South Bridge USB ISA (Industry standard architecture) IDE (integrated drive electronics)
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Main Memory The Main memory permanently saves all the data that the user wants to save by inputting it through to the CPU which saves the data to a hard drive.
The diagram shows that the processor is at the centre of all the data flows in a computer system. ·
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