The Techie Glossary
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Letter
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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z |
2nd |
B C D I N P S U V |
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Ob   
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Objects
are different things depending on the context. In general terms, an object
to some operating systems means anything from an icon
to a file or an application.
In an object-oriented programming languages
an object is a set of instructions that is part of the program model which
can be instantiated into each application. In HTML
or XML an object is a holder for something
placed within a web page like an image,
movie or Java applet.  
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OC
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OC3
is an optical network connection with a
bit rate of approximately 155 million BPS
used over fiber optic cables. OCR
stands for Optical Character Recognition. It is the
ability of software to read printed text.
The text is usually scanned optically by a scanner,
then presented to the computer as a
graphic file and the text characters converted
to a text file by the OCR software.
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OD |
ODBC
stands for Open DataBase Connectivity. It is a database
standard that allows different computer systems
to access the same database server and
acquire the same information. Odd
parity
is an error checking protocol
in asynchronous communications in which
the parity bit is set to one.
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OI |
OIW
stands for OSI Implementors Workshop. In association with NIST,
the workshop is the North American regional forum about networks
at which OSI implementation agreements are
decided for the OSI network model. It
is one of the three regional OSI implementors workshops along with AOW
and EWOS.
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On |
On-line
is the condition of a computer being
directly connected to a network or the Internet. ONC
stands
for Open Network Computing. A proprietary network
architecture and application developed
by a consortium of network professionals.
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Op |
Open
source
refers to software and the licensing agreement. This contract between
the user and the open
source software developers usually makes the software free to change,
share and redistribute as defined under an open
source licensing agreement. Open
source licensing agreements are
the agreements between the user and the
open source software creator. According to
most open source licensing agreements the software is free to change,
share and distribute, and this freedom must follow any new versions based
on the original software. Open
source software
is software distributed under an open source
licensing agreement. It is developed by the open
source movement on the Internet
that has started a change in the software industry. According to most
open source licensing agreements the software is free to change, share
and distribute, and this freedom must follow any new versions based on
the original software. It also usually free of cost or relatively inexpensive.
A definition for open source is available at Opensource.org. Open
System Interconnection
(OSI) is an international standardization project to
facilitate network communications. The OSI
have developed the widely adopted OSI network
model. This network model includes the TCP/IP
protocol suite which is used on the Internet.
Opening
in computer terms refers to accessing
a drive, directory
or file, and importing
the contents into a software application
for viewing or manipulation. Opensource.org
is an organization that provides guidelines to the definition for open
source software and open source licensing
agreements. By providing agreed upon parameters to the define what
open source means for software
distribution it helps clarify the contractual agreements. The organization
also helps to evaluate the different licensing agreements available on
the web. Operands
in a
mathematical or logical equation are the numbers upon which the functional
operators perform. Operating
systems
are the core user related software
on a computer system. Without an operating
system the user will not be able to access the computer. If an operating
system is unavailable when booting the
computer it will generate a boot error.
In that case the only recourse for the user may be to boot the computer
from a bootable floppy disk or CD,
then examine the operating system. To boot to an alternate boot disk the
system BIOS must also recognize the drive
as a bootable drive. Operators
are
the functional part of a mathematical or logical equation. A plus sign,
minus sign or multiplication sign, greater than sign are all mathematical
operators. In programming, the operator
is the symbol for the mathematical or logical operation in an algorithm
or function. Optical
Character Recognition
(OCR) is the ability of software
to read printed text. The text is usually scanned optically by a scanner,
then presented to the computer as a
graphic file and the text characters converted
to a text file by the OCR software.
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OS |
OSI
stands for Open Systems Interconnection. This is an
international standardization project to facilitate network
communications. The OSI have developed the widely adopted OSI
network model. This network model includes the TCP/IP
protocol suite which is used on the Internet.
OSI
network addresses are
addresses used to locate an OSI layer
on a network in the OSI
network model. Each address is standardized for one of several network
addressing domains. The OSI Network Address has up to three selectors,
one each for use by the transport layer,
session layer, and presentation
layers. OSI
network model refers to a seven layer
model covering hardware and software
specifications for a network based on OSI.
The layered model describes the entire networking process.
There
are seven layers in the model, the physical
layer, the data link layer, the network
layer, the transport layer, the session
layer, the presentation layer and the application
layer. Some layers use certain protocols
within the TCP/IP protocol suite for communications.
The OSI network model is maintained by the ISO
standards organization. OSI
presentation address
is the address used to locate an OSI application
entity in the OSI
network model on the presentation layer
and application layer. This is distinct
from the IP address. OSI
transport address
is the IP address. This address used to
transport data on the transport layer
of the OSI network model. This is distinct
from the OSI presentation address on the
presentation layer and application
layer. OSPF
stands for Open Shortest Path First. This is a proposed standard for an
Internet IGP.
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Ou
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Output
is the result from a process that is printed
or displayed to the user. This process could
be from a command from the user. The output
of one process can be converted into input
to another process.
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Ov |
Overwrite
mode
in applications such as word
processing programs, and on the command
line indicate that the current character
typed will be written over the highlighted
character on screen. In insert
mode what is typed is inserted between two characters. The Insert
key toggles between these two modes. Usually there is some indication
in the software application that tells
the user which mode is current. Overwrite
permissions
are file attributes that allow certain
users to write over the file that is currently
being stored. This is the same as write permissions
for files.
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