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designates input, output, and storage equipment that might be added to a computer system to enhance its functionality
is the case that holds the computers main circuit boards, microprocessor, memory, power supply, and storage devices.
is a portable computing device featuring a touch sensitive screen that can be used as a writing ot drawing pad.
home computer system
encompasses a vast array of computer configurations designed to accomodate consumers who use computers for personal tasks.
a single micro processor that contains circuitry for more than one processing unit is this
is a special high speed mempory that allows a microprocessor to access data more rapidly than ever from memory located elswhere.
the processor must complete all steps in the instruction cycle before it begins to execute the next instruction
a processor can begin executing an instruction before it completes the previous instruction
is a technique for increasing the speed of a computer such as a processor, graphics card, system board or memory.
operating system uses an area of the hard disk to store parts of programs or data files until they are needed.
is the average time it takes a computer to locate data on the storage medium and read it.
Data transfer rate
is the amount of data a storage device can move per second from the storge medium to the computer.
the amount of data that can be stored in a given area of a storage medium, such as the surface of a disk.
mechanism in the disk drive can magnetize particles to write data, and sense the particles polarities to read data.
hard disk platter
is a flat, rigid disk made of aluminum or glass and coated with magnetic iron oxide particles.
hard disk controller
positions the disk, locates data, and interface with components on the system board.
if a readwrite head runs into a dust particle or other contaminent on the disk it cause this.
Read - only technology
stores data permanently on a disk, which cannot be subsequently added or changed
uses a laser to change the color in a dye layer sandwiched beneath the clear plastic disk surface.
uses phase change technology to alter a crystal structure on the disk surface.
discs store data using a recordable technology similar to a CD-R but with a DVD storage capacity
Solid state storage
is a technology that stores data in eraseable, rewritable circuitry, rather than on spinning disks or streaming tape.
solid state storage
can be used as a substitute for a hard disk drive in handheld devices and netbooks
solid state drive
can be used as a substitute for a hard disk drive in handheld devices and netbooks.
USB flash drive
is typically used for storing data files and programs that you want to use on various computers
small circuit board that gives a computer the capability to hold a storage device, input device, output device.
Fire Wire ports
are used for external storage devices and for transferring data from digital video cameras to a computer for editing, printing, or storage
is a sudden increase in electrical energy affecting the current that flows to electrical outlets
is a device that not only provides surge protection, but also furnishes desktop computers and network devices with battery backup power during a power outage
blue screen of death
a sign that your computer is not working properly, and that which it cannot recover
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