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25 Cards in this Set

  • Front
  • Back
Continuous (wave form) signals.
Arithmetic logic unit
Component of a processor that performs arithmetic, comparison, and other operations.
The smallest unit of data a computer can process. Bit is short for binary digit
Eight bits that are grouped together as a unit. A byte provides enough different combinations of 0s and 1s to represent 256 individual characters.
Area of memory that stores the contents of frequently used data or instructions.
Central processing unit
Electronic component on a computer's motherboard that interprets and carries out the basic instructions that operate the computer. Also called a processor.
Clock speed
Pace of the system clock, measured by the number of ticks per second.
Representation of data using only two discrete states: on (1) and off (0).
Firewire port
Port that can connect multiple types of devices that require faster data transmission speeds.
Gigabyte (GB)
Approximately 1 billion bytes.
Gigahertz (GHz)
One billion ticks of the system clock per second.
Kilobyte (KB or K)
Exactly 1,024 bytes.
Megabyte (MB)
Approximately 1 million bytes.
Electronic components in a computer that store instructions waiting to be executed and data needed by those instructions.
Main circuit board of the system unit, which has some electronic components attached to it and others built into it. See also system board.
Device that connects to a system unit and is controlled by the processor in the computer.
Point at which a peripheral attaches to or communicates with a system unit so it can send data to or receive information from the computer.
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).
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 long as the computer has continuous power. See also main memory.
Read-only memory (ROM)
Type of nonvolatile memory that is used to store permanent data and instructions.
Serial port
Type of interface that connects a device to the system unit by transmitting data one bit at a time.
Sound card
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.
System clock
Small quartz crystal circuit that is used by the processor to control the timing of all computer operations.
Terabyte (TB)
1 trillion bytes
USB port
Port that can connect up to 127 different peripherals with a single connector type.