Lenovo PC 300GL Understanding Your Personal Computer 6267, 6277, 6287 - Page 64

random access memory RAM, power-on self-test POST

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picture element (pel). In computer graphics, the smallest element of a monitor surface that can be independently assigned color and intensity. pin. One of the conducting contacts of an electrical connector. pipeline. A serial arrangement of processors or a serial arrangement of registers within a processor. Each processor or register performs part of a task and passes results to the next processor; several parts of different tasks can be performed at the same time. plotter. An output unit that directly produces a hardcopy record of data on a removable medium, in the form of a two-dimensional graphic representation. Plug and Play device. A device that is auto-configuring. A Plug and Play device comes with built-in identification and configuration specifications that enable the computer BIOS to automatically configure the device and assign it computer resources. Contrast with legacy device. port. An access point for data entry or exit. POST. Power-on self-test. power-on self-test (POST). A series of diagnostic tests that are run automatically by a device when the power is turned on. priority. (1) A rank assigned to a task that determines its precedence in receiving system resources. (2) The relative significance of one job to other jobs in competing for allocation of resources. processing. The performance of logical operations and calculations on data, including temporary retention of data in microprocessor storage while the data is being handled. processor. A functional unit that interprets and executes instructions. A processor consists of at least an instruction control unit and an arithmetic and logic unit. See microprocessor and central processing unit. program. (1) A sequence of instructions that a computer can interpret and execute. (2) To design, write, modify, and test computer programs. programmable read-only memory (PROM). A storage device that, after being written to once, becomes read-only memory. PROM. Programmable read-only memory. prompt. A visual or audible message sent by a program to request the user's response. R random access memory (RAM). (1) A storage device in which data can be written and read. (2) A storage device into which data is written and from which data is read in a nonsequential manner. read. To acquire or interpret data from a storage device, from a data medium, or from another source. read-only memory (ROM). Memory in which stored data cannot be modified by the user except under special conditions. See also EEPROM, EPROM, and PROM. record. (1) A set of data treated as a unit. (2) A set of one or more related data items grouped for processing. refresh. (1) To recharge a memory location in volatile memory with an electric current so that it retains a state or binary value. (2) In computer graphics, the process of repeatedly producing a monitor image on a monitor surface so that the image remains visible. register. (1) An integrated circuit that contains 8, 16, or 32 storage locations, each of which can store 1 bit of binary data. See also binary. (2) An area that stores binary data while it is being processed by the computer. resolution. In computer graphics, a measure of the sharpness of an image, expressed as the number of lines and columns on the monitor screen or the number of pels per unit of area. 56

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picture element (pel)
.
In computer graphics, the
smallest element of a monitor surface that can be
independently assigned color and intensity.
pin
.
One of the conducting contacts of an electrical
connector.
pipeline
.
A serial arrangement of processors or a
serial arrangement of registers within a processor.
Each processor or register performs part of a task
and passes results to the next processor;
several
parts of different tasks can be performed at the same
time.
plotter
.
An output unit that directly produces a
hardcopy record of data on a removable medium, in
the form of a two-dimensional graphic
representation.
Plug and Play device
.
A device that is
auto-configuring.
A Plug and Play device comes
with built-in identification and configuration
specifications that enable the computer BIOS to
automatically configure the device and assign it
computer resources.
Contrast with legacy device.
port
.
An access point for data entry or exit.
POST
.
Power-on self-test.
power-on self-test (POST)
.
A series of diagnostic
tests that are run automatically by a device when
the power is turned on.
priority
.
(1)
A rank assigned to a task that
determines its precedence in receiving system
resources.
(2)
The relative significance of one job to
other jobs in competing for allocation of resources.
processing
.
The performance of logical operations
and calculations on data, including temporary
retention of data in microprocessor storage while the
data is being handled.
processor
.
A functional unit that interprets and
executes instructions.
A processor consists of at
least an instruction control unit and an arithmetic
and logic unit.
See microprocessor and central
processing unit.
program
.
(1)
A sequence of instructions that a
computer can interpret and execute.
(2)
To design,
write, modify, and test computer programs.
programmable read-only memory (PROM)
.
A
storage device that, after being written to once,
becomes read-only memory.
PROM
.
Programmable read-only memory.
prompt
.
A visual or audible message sent by a
program to request the user's response.
R
random access memory (RAM)
.
(1)
A storage
device in which data can be written and read.
(2) A
storage device into which data is written and from
which data is read in a nonsequential manner.
read
.
To acquire or interpret data from a storage
device, from a data medium, or from another
source.
read-only memory (ROM)
.
Memory in which
stored data cannot be modified by the user except
under special conditions.
See also EEPROM,
EPROM, and PROM.
record
.
(1)
A set of data treated as a unit.
(2) A
set of one or more related data items grouped for
processing.
refresh
.
(1)
To recharge a memory location in
volatile memory with an electric current so that it
retains a state or binary value.
(2)
In computer
graphics, the process of repeatedly producing a
monitor image on a monitor surface so that the
image remains visible.
register
.
(1)
An integrated circuit that contains 8,
16, or 32 storage locations, each of which can store 1
bit of binary data.
See also binary.
(2)
An area that
stores binary data while it is being processed by the
computer.
resolution
.
In computer graphics, a measure of the
sharpness of an image, expressed as the number of
lines and columns on the monitor screen or the
number of pels per unit of area.
56