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24 Cards in this Set
- Front
- Back
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Analog
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Continuous (wave form) signals.
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Arithmetic logic unit
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Component of a processor that performs arithmetic, comparison, and other operations.
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Bit
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The smallest unit of data a computer can process. Bit is short for binary digit
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Byte
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Eight bits that are grouped together as a unit. A byte provides enough different combinations of 0s and 1s to represent 256 individual characters.
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Bus
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Electrical channel that transfers electronic bits internally within the circuitry of a computer, allowing the devices both inside and attached to the system unit to communicate with each other.
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Binary system
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Electrical channel that transfers electronic bits internally within the circuitry of a computer, allowing the devices both inside and attached to the system unit to communicate with each other.
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Cache
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Area of memory that stores the contents of frequently used data or instructions.
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Control unit
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Component of a processor that directs and coordinates most of the operations in the computer.
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Clock speed
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Pace of the system clock, measured by the number of ticks per second.
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Digital
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Representation of data using only two discrete states: on (1) and off (0).
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Expansion slot
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Socket on a motherboard that can hold an adapter card.
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Adapter card
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Circuit board that enhances functions of a component of a system unit and/or provides connections to peripherals.
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Gigabyte (GB)
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Approximately 1 billion bytes.
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Gigahertz (GHz)
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One billion ticks of the system clock per second.
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Memory
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Electronic components in a computer that store instructions waiting to be executed and data needed by those instructions.
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Memory cache
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Cache that helps speed the processes of a computer by storing frequently used instructions and data.
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Motherboard
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Main circuit board of the system unit, which has some electronic components attached to it and others built into it. See also system board.
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Processor
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Electronic component on a computer's motherboard that interprets and carries out the basic instructions that operate the computer. Also called CPU or central processing unit. See also central processing unit (CPU).
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Multi-core processor
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Single chip with two or more separate processors.
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Random Access Memory (RAM)
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Type of memory that can be read from and written to by the processor and other devices. Programs and data are loaded into random access memory from storage devices such as a hard disk and remain in random access memory as
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Read-only memory (ROM)
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Type of nonvolatile memory that is used to store permanent data and instructions.
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Sound card
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Adapter card that enhances the sound generating capabilities of a personal computer by allowing sound to be input through a microphone and output through external speakers or headset.
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System clock
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Small quartz crystal circuit that is used by the processor to control the timing of all computer operations.
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Terabyte (TB)
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a trillion bytes
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