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MindMap Gallery System Unit
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System Unit
The system unit, also known as a "tower" or "chassis," is the main part of a desktop computer. It includes the motherboard, CPU, RAM, and others.
Edited at 2020-10-08 08:43:11- Mind Map Kingdom
Mind maps are a great resource to help you study. A mind map can take complex topics like plant kingdom and illustrate them into simple points, as shown above.
- Team Communication Strategies
Mind maps are useful in constructing strategies. They provide the flexibility of being creative, along with the structure of a plan.
- Types of Vitamins
Vitamins and minerals are essential elements of a well-balanced meal plan. They help in ensuring that the body is properly nourished. A mind map can be used to map out the different vitamins a person requires.
System Unit
- Mind Map Kingdom
Mind maps are a great resource to help you study. A mind map can take complex topics like plant kingdom and illustrate them into simple points, as shown above.
- Team Communication Strategies
Mind maps are useful in constructing strategies. They provide the flexibility of being creative, along with the structure of a plan.
- Types of Vitamins
Vitamins and minerals are essential elements of a well-balanced meal plan. They help in ensuring that the body is properly nourished. A mind map can be used to map out the different vitamins a person requires.
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- Outline
System-Unit
Expansion Slots and Adapter Cards
An expansion slot is a socket on themotherboard that can hold an adaptercard
An adapter card enhances functions of acomponent of the system unit and/orprovides connections to peripherals
Sound card and video card
With Plug and Play, the computerautomatically can configure adapter cardsand other peripherals as you install them
Removable flash memory includes
Memory cards, USB flash drives,and PC Cards/ExpressCardmodules
Ports and Connectors
A port is the point at which a peripheralattaches to or communicates with a systemunit (sometimes referred to as a jack)
A connector joins a cable to a port
A USB port can connect up to 127different peripherals together with a singleconnector
You can attach multiple peripheralsusing a single USB port with a USB hub
Other types of ports include
Firewire port
Bluetooth port
SCSI port
eSATA port
IrDA port
Serial port
MIDI port
Processor
The processor, also called thecentral processing unit (CPU)
Multicore processor
Dualcore processor
Quadcore processor
The control unit is the component of theprocessor that directs and coordinates mostof the operations in the computer
The arithmetic logic unit (ALU) performsarithmetic, comparison, and other operations
The processor contains registers,that temporarily hold data andinstructions
The system clock controls thetiming of all computeroperations
A processor chip generates heatthat could cause the chip to burn up
Require additional cooling
Heat sinks
Liquid cooling technology
Memory
Memory consists of electronic components that storeinstructions waiting to be executed by the processor, dataneeded by those instructions, and the results of processingthe data
Stores three basic categoriesof items
The operating system andother system software
Application programs
Data being processed and theresulting information
Each location in memory hasan address
Memory size is measured in kilobytes (KB orK), megabytes (MB), gigabytes (GB), orterabytes (TB)
The system unit contains twotypes of memory
Volatile memory
Loses its contents whenpower is turned off
RAM
RAM chips usually reside on a memorymodule and are inserted into memoryslots
Three basic types of RAMchips exist
Dynamic RAM (DRAM)
Static RAM (SRAM)
Magnetoresistive RAM (MRAM)
The amount of RAM necessary in a computeroften depends on the types of software youplan to use
Nonvolatile memory
Does not lose contents whenpower is removed
Flash memory can be erasedelectronically and rewritten
CMOS technology provides highspeeds and consumes littlepower
Readonly memory (ROM) refers to memorychips storing permanent data andinstructions
Firmware
Memory cache speeds the processes of thecomputer because it stores frequently usedinstructions and data
A PROM (programmable readonly memory)chip is a blank ROM chip that can be writtento permanently
EEPROM can be erased
Access time is the amount of time ittakes the processor to read frommemory
Measured in nanoseconds
Putting It All Together
Home
Intel Core 2 Duo or Intel Celeron DualCore or AMD Sempron
Minimum RAM: 2 GB
Small Office/ Home Office
Intel Core 2 Quad or Intel Core 2 Extremeor AMD Athlon FX or AMD Athlon X2 DualCode
Minimum RAM: 4 GB
Mobile
Intel Core 2 Extreme or AMDTurion X2
Minimum RAM: 2 GB
Power
Intel Itanium 2 or AMD Quad Core Opteronor Intel Quad Core Xeon or Sun UltraSPARCT2
Minimum RAM: 8 GB
Enterprise
Intel Core 2 Quad or Intel Core 2 Extreme orAMD Athlon FX or AMD Athlon X2 DualCore
Minimum RAM: 4 GB
Buses
A bus allows the various devices both insideand attached to the system unit tocommunicate with each other
Data bus
Address bus
Word size is the number of bits theprocessor can interpret and execute at agiven time
Expansion slots connect toexpansion buses
Common types of expansionbuses include
PCI bus
PCI Express bus
Accelerated Graphics Port
USB and FireWire bus
PC Card bus