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Lesson 4
How a Computer Processes Data
31
Business
Undergraduate 1
05/31/2011

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Term
random access memory
Definition
A type of computer chip; short-term, volatile memory.
Term
peripheral device
Definition
A Device such as a keyboard, monitor, printer, and mouse.
Term
port
Definition
An interface by which a peripheral device attaches to or communicates with the system unit. Also called a jack
Term
processor
Definition
The brain of the computer. Also called the microprocessor, central processor, or the central processing unit.
Term
arithmetic/logic unit
Definition
A component of the microprocessor; performs arithmetic computations and logical operations.
Term
binary
Definition
Machine language consisting of ones and zeros.
Term
BIOS ROM
Definition
A chip that contains non-volatile memory.
Term
bit
Definition
A zero or one in computer code.
Term
Bluetooth
Definition
Uses radio waves and provides wireless short-range communications of data and voice between both mobile and stationary devices.
Term
byte
Definition
Made up of eight bits; a byte represents a single character, such as the letter A.
Term
circuit board
Definition
A thin plate or board that contains electronic components.
Term
computer system
Definition
Input, output, and processing devices grouped together.
Term
computer system
Definition
Input, output, and processing devices grouped together.
Term
controller
Definition
A device that controls the transfer of data from the computer to a peripheral device and vice-versa.
Term
dual-core processor
Definition
A single chip that contains two separate processors.
Term
execution cycle
Definition
The amount of time it takes the CPU to execute the instruction and store the results in RAM.
Term
expansion slots
Definition
Openings on the motherboard where an expansion board can be inserted.
Term
firewire
Definition
A type of port known as FireWire or IEEE.
Term
instruction cycle
Definition
The amount of time it takes to retrieve the instruction and complete the command.
Term
machine cycle
Definition
The instruction cycle and one or more execution cycles.
Term
memory
Definition
On the computer's motherboard; where the data is stored.
Term
modem
Definition
A communication hardware device that facilitates the transmission of data by converting analog signals to digital and vice versa.
Term
motherboard
Definition
Circuit board that mounts into the case consisting of many integral components including the central processing unit, memory, controllers, and expansion ports and slots.
Term
multi-core processor
Definition
An expansion chip that provides for more than two separate processors.
Term
parellel port
Definition
Computer port that can transfer data eight bits at a time.
Term
port
Definition
An interface by which a peripheral device attaches to or communicates with the system unit. Also called a jack.
Term
processor
Definition
The brain of the computer. Also called the microprocessor, central processor, or the central processing unit.
Term
read-only memory
Definition
Stores specific instructions that are needed for the computer operations, non-volatile.
Term
serial port
Definition
Computer port that can transfer data one bit at a time; generally used by the modem and mouse.
Term
Small Computer System Interface
Definition
A standard interface for connecting peripherals such as disk drives and printers.
Term
Universal Serial Port
Definition
A port that supports data transfer rates of up to 480 million bits per second.
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