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46 Cards in this Set
- Front
- Back
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expansion slot
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a socket on the motherboard that can hold an adapter card
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adapter card
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a circuit board that enhances functions of a component of the system unit
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Flash memory
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memory that is not deleted when removed from the computer that can be erased and rewritten
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peripheral
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a device that connects to the system unit
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video card/graphic card
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converts computer output into video signal
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sound card
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enhances the sound-generation capabilites of a PC
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hub
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device that plugs in to a USB port on the system and multiplies the amount of ports
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memory card
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a removable flash memory device that is no bigger than 1.5" in height or width that goes into a system unit
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port
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the point at which a peripheral attaches with a system unit
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USB
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universal Bus Port A port that can connect with up to 127 different peripherals
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System Unit
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a case that contains the electronic components of a computer used to processor
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Motherboard
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System Board, main circuit board of the system unit
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Chip
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small piece of semi-conducting material, usually silicon, on which integrated circuits are etched
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CPU
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(central processing unit) interprets and carries out the basic instructions that operate the computer
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multi-core processor
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chip with two or more separate processor cores
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Control unit
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component of the processor that directs and coordinates most of the operations in the computer
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ALU
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(arithmetic logic unit) performs arithmetic, comparison, and other operations
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System Clock
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a small circuit that controls the timing of all computer operations
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clock speed
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measured b the number of ticks per second, the pace of the system clock
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Binary system
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number system that has just two unique digits, 0 and 1, called bits
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bit
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(binary digit) smallest unit of data a computer can process
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Byte
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eight bits grouped together as a unit
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memory
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electronic components that store instructions waiting to be executed by processor, data needed by those instructions, and the results
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volatile memory
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when computer is turned of and loses its memory
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nonvolatile memory
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doesn't lose memory when off
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RAM
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(Random Access Memory) consists of memory chips that can be read and written by devices
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ROM
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(Read only memory) refers to memory chips storing permanent data and instructions
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Memory module
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small circuit board where RAM chips reside
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memory slot
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holds memory modules
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cache
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helps speed the processes of the computer because it stores frequently used instructions and data
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L1 Cache
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built directly in processor chip, usually with small capacity
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L2 Cache
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slightly slower than the L1 cache but with much larger capacity
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CMOS
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(complementary metal-oxide semi--conductor) uses battery power to retain information even when power is off
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Access time
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amount of time it takes processor to read data, instructions, and info from memory
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nanosecond
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(ns) one billionth of a second
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fire wire port
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similar to USB but faster
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SCSI port
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special high-speed parallel port
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port replicator
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external device that provides connections to peripherals through ports built into the device
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docking station
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external device that attaches to a mobile computer or device, contains a power connection, and provides connections to peripherals
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bus
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allows the various devices both inside and attached to system unit to communicate with each other
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system Bus
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(front side bus)
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backside bus
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connects processor to cache
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expansion bus
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allows the processor to communicate with the peripherals
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bay
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opening inside the system unit in which you can install additional equipment
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drive bay
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holds disk drives
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power supply
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component of the system unit that converts AC to DC power
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