SYSTEM UNIT Amy Pierce Comm. 165 MWF 800-850. System unit components are housed within the system...
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Transcript of SYSTEM UNIT Amy Pierce Comm. 165 MWF 800-850. System unit components are housed within the system...
![Page 1: SYSTEM UNIT Amy Pierce Comm. 165 MWF 800-850. System unit components are housed within the system unit or system cabinet Desktop Notebook PDA (personal.](https://reader036.fdocuments.in/reader036/viewer/2022062516/56649d795503460f94a5be9b/html5/thumbnails/1.jpg)
SYSTEM UNIT
Amy PierceComm. 165
MWF 800-850
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System unit components are housed within the system unit or system cabinet
• Desktop• Notebook• PDA (personal digital
assistant)
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ELECTRONIC REPESENTATION• Data and
instructions are represented electronically with a two-state binary system or numbers
• A byte consists of eight bits and represents one character.
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BINARY CODING SCHEMES
• ASCII• EBCDIC• Unicode
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SYSTEM BOARD
• Also known as the main board or mother board
• Connects all system components
• a flat circuit board covered with sockets and other electronic parts, including a variety of chips
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MICROPROCESSORThe “brains” or the system unit
• Control Unit• Arithmetic-logic
unit• Microprocessor
chips– Word
• complex instruction set computer chips
• reduced instruction set computer chips
– Smart cards
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MEMORY
• RAM– flash RAM – virtual memory– memory cache
• ROM• CMOS
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SYSTEM CLOCK
The system clock controls the speed of computer operations. It is measured in gigahertz.
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EXPANSION SLOTS AND CARDS
• Network adapter cards• modem cards• television boards• PC cards
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BUS LINES
• ISA• PCI• AGP• USB
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PORTS AND CABLES
• Allow external devices to connect to the system unit
• Ports - connection sockets on the outside of the system unit– types: serial, parallel, USB, and HPSB
• Cables - used to connect external devices to the unit via ports
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Thank You