Electronic Definitions (O)
[O] Presenting a list of electronic terms starting with letter o that are available for more detailed lookup for their definitions or abbreviation explanation. All terms are listed in alphabetical order for easy browsing.
Electronic Acronyms and Terms For [O] | Description |
Other Electronic Terms Somewhat Related; |
OA |
"Office Automation" |
oaa |
OAA |
"Over Air Addressing" | |
Object Program |
- Is the translated version of a program that has been assembled or compiled | |
OCR |
"Optical Character Recognition" - Is machine recognition of stylised characters by light sensing methods |
|
OCS |
"Officer Candidate School" | |
Octal Notation |
- Is the system using base eight and the digits 0 1 2 7 | |
Octave |
- A factor of 2. Often used with frequency ratios of 2, as in an octave of frequency referring to a 2:1 change in frequency. | |
Odd Parity |
- Is present in any binary representation in which the number of Is in the representation is odd |
parity bit, parity check |
OEM |
"Original Equipment Manufacturer" | |
Off Hook |
- The condition which nowadays indicates the active state of the local loop | |
Off Line Processing |
- Is processing carried out by devices not under the control of the central processor | |
Offset Fed Antenna |
- An antenna with a reflector that forms only part of a paraboloid of revolution usually excluding the pole or apex such that a front feed causes no aperture blockage | |
Offset Stepping |
- Staggering of circuit traces or via hole pads | |
OHD |
"On Hook Dialing" - Allows numbers to be dialled without lifting the handset |
|
Ohmic Region |
- The part of the drain curves that starts at the origin and ends at the proportional pinchoff voltage |
pinchoff voltage, proportional pinchof voltage, proportional pinchoff voltage |
Ohm`s Law |
- Mathematical relationship between current, voltage and resistance stating that when a voltage is applied to a metal conductor, the current moving through the conductor is proportional to the applied voltage. | |
OIRT |
"Organisation International de Radiodiffusion et Television" | |
OKI |
- Oki Electric Industry Co., Ltd., commonly referred to as OKI, OKI Electric or the OKI Group, is a Japanese company manufacturing and selling info-telecom and printer products. | |
OMT |
"OrthogonalMode Transducer" |
head unit |
On Hook |
- The condition which indicates the inactive state of the local loop |
on hook dialing |
On Line Processing |
- Is processing performed on equipment directly under the control of the central processor whilst the user remains in communication with the computer. | |
OOK |
"OnOff Keying" | |
Op Amp |
- A high gain dc amplifier that provides usable voltage gain for frequencies from 0 to over 1 MHz |
linear op amp circuit |
Open |
- Refers to a component or connecting wire that has an open circuit, equivalent to a high resistance approaching infinity |
open subroutine |
Open Subroutine |
- Is one that is part of the main program and is copied into the program where required | |
Operation Code |
- Is the part specifying the operation to be performed | |
Operator`s Console |
- Is an input/output device that consists of a keyboard and a VDU (or in some cases switches and display lamps). It is used by the operator to control the computer.) | |
OPL |
"Organiser Programming Language" - Used in the Symbian platform for rapid application development |
OPX OXH |
Optical Mark Reader |
- Is an input device that reads marks made in predetermined positions on special forms (or cards) by a light sensing method | |
Optimum Q Point |
- The point where the ac load line has equal maximum signal swings on both half-cycles | |
Optocoupler |
- A combination of a LED and a photodiode. An input signal to the LED is converted to varying light which is detected by the photodiode. The advantage is very high isolation resistance between the input and output. | |
OPX |
- An OPL extension DLL providing language extension procedures |
OXH |
Orthogonal |
- Mutually at right angles |
802.11a, cofdm, polarisation, polarisation rotor/rotator x/y |
OS |
"Operating System" - Is a program or suite of programs that controls the entire operation of the computer handling I/O operations interrupts user requests etc. |
oscillations, osi |
Oscillations |
- The death of an amplifier. When an amplifier has positive feedback, it may break into oscillations, which is unwanted high-frequency signal. |
compensating capacitor, ground loop |
OSI |
"Open Systems Interconnection" |
intapnet |
OTP |
"One Time Programmable" | |
OTS |
"Orbital Test Satellite" | |
OUM |
"Ovonics Unified Memory" | |
Outboard Transistor |
- A transistor placed in parallel with a regulating circuit to increase the amount of load current that the overall circuit can regulate. The outboard transistor kicks in at a predetermined current level and supplies the extra current needed by the load. | |
Outgoing Message |
- Message played to caller on a TAM |
digital ogm |
Output Device |
- Is a peripheral unit that translates signals from the computer into a human readable form or into a form suitable for reprocessing by the computer at a later stage |
graphical display unit, interrupt, music synthesiser, paper tape punch, plotter, printer, speech synthesiser |
Output Impedance |
- Another term used for the Thevenin impedance of an amplifier |
closed loop quantity |
Output Offset Voltage |
- Any deviation or difference of the output voltage from the ideal output voltage | |
Oval Extension |
- Material added to hole land patterns for added strength or to prevent drilled hole break-out on small via interconnections | |
Overflow |
- Occurs when arithmetic operations produce results which are too large to store |
overflow flag |
Overflow Flag |
- Is a single bit that is set to 1 when overflow occurs during an arithmetic 36 Key operation | |
Overlay |
- Is the process by which convenient subdivisions (segments) of a large program are brought from backing store for processing | |
Overloading |
- Using a load resistance so small that it increases the voltage gain of an amplifier by a noticeable amount |
buffer amplifier |
Overwriting |
- Is the erasing of a data item from store by writing another in its place | |
OWF |
"Optimum Working Frequency" | |
OXH |
- An OPL header file for inclusion in OPL source code, specifying the public interface to an OPX. Published by the OPX provider. | |
Oxidation |
- A reaction where something loses electrons. Given that oxygen will strip electrons from most elements, this has historically meant a reaction involving oxygen. A cathode (electron emitter) is constantly oxidized as it looses electrons. |
Redox |