Electronic Definitions (H)
[H] Presenting a list of electronic terms starting with letter h 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 [H] | Description | Other Electronic Terms Somewhat Related; |
H Parameters |
- An early mathematical method for representing transistor action. Still used on data sheets. | |
H.323 |
- Real-time audio and video and data over packet switched network | |
HAD |
"Hole Accumulation Diode" | |
Half Adder |
- Is a logic circuit that adds a pair of corresponding bits of two numbers expressed in binary form (but cannot add in any carry) producing a sum and a carry. Also called a two-input adder. |
adder |
Half Duplex |
- A circuit which carries information in both directions but not simultaneously |
hdx |
Half Transponder |
- Method of broadcasting used to transmit two channels via the one transponder | |
Half Wave Rectifier |
- A rectifier with only one diode in series with the load resistor. The output is a half-wave rectified voltage | |
Hands Free Dialling |
- Allows numbers to be dialled without lifting the handset | |
Hands Free Operation |
- Numbers may be dialled and conversations take place without the need to lift the telephone handset | |
HAP |
"High Altitude Platform" | |
Hard Copy |
- Is computer output printed on paper | |
Hard Disk |
- Is a rigid magnetic disk. It normally allows a higher recording density than a floppy disk thus providing more storage for the same physical dimensions. | |
Hard Saturation |
- Operating a transistor at the upper end of the load line with a base current that is one-tenth of the collector current. | |
Hard Sectored Disk |
- Is one that is formatted partially or wholly by markers which are put on the disk when it is made |
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Hardware |
- The stuff that makes up the computer | |
Hardwired Logic |
- Is permanent circuitry often integrated circuit elements and their interconnections. Sometimes called firmware. |
|
Harmonic Distortion |
- The presence of harmonics in the output signal of a device which were not present in the input signal | |
Hashing |
- is the process of generating a number usually by adding the values in a field record or area of storage regardless of their meaning | |
HBI |
"Horizontal Blanking Interval" | |
HBT |
"Heterojunction Bipolar Transistor" | |
HCS |
"Hard Clad Silica" | |
HDB |
"High Density Bipolar" | |
HDLC |
"High level Data Link Control" | |
HDMI |
"High Definition Multimedia Interface" - Audio Video interface for high definition TV and Home Theatre Systems |
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HDTV |
"High Definition Television" - System using increased horizontal scanning rate for a sharper picture |
aspect ratio, mini display port to display port adapter |
HDX |
"Half Duplex Transmission" | |
Head Crash |
- Is the dramatic and expensive descent of the read/write head onto the surface of a disk caused by mechanical malfunction | |
Head End |
- Central distribution point for a CATV or MATV system | |
Head Unit |
- Combination of LNB polariser or OMT and feedhom and dish | |
Header Block |
- Is a block of data placed at the beginning of a file which identifies that particular file and which may describe its structure. | |
Hearing Aid Compatible |
- Compatible with hearing aids which can be switched to the T position to improve speech clarity and eliminate background noise | |
Heat Dissipation |
- Thermal transfer of heat from the circuit assembly | |
Heat Pressure Seal |
- A method for terminating conductive ribbon cable to a mating conductive pattern on a substrate | |
Heat Sink |
- A mass of metal attached to the case of a transistor to allow the heat to escape more easily | |
HEMT |
"High Electron Mobility Transistor" |
hemt lnb |
HEMT lnb |
- High Electron Mobility Transistor Advanced donor techniques used in manufacturing allows charge carrier movement at lower noise temperatures. | |
Hexadecimal Notation |
- Is the system using base sixteen and the digits 0 1 2 9 A B C D E F. Hexadecimal numbers are used widely in computer science and other electronic fields. | |
High Frequency Border |
- The frequency above which a capacitor acts as an ac short. Also, the frequency where the reactance is one-tenth of the total series resistance. | |
High Level Language |
- Is a problem orientated language in which each instruction may be equivalent to several machine code instructions. It may be used on different computers by using appropriate compilers. | |
High Power Satellite |
- Satellite with transponder RF power in excess of about 100W | |
High Resolution Graphics |
- Is a term generally applied to graphical display units capable of fine definition by plotting around 300 or more distinct points in the width of a domestic TV screen | |
HLR |
"Home Location Register" | |
HOB |
- Its used in Telecommunication Field | |
Hold |
- A method of disconnecting the speech path between callers without breaking the local loop |
holding current |
Holding Current |
- The minimum current through a thyristor that can keep it latched in the conducting stage |
silicon controlled rectifier |
Hole |
- A Vacancy in the valence Orbit | |
Homerf |
- A group that is developing the swap specification for networking in the soho market and will eventually take over from irda. | |
Hook Switch |
- The switch which is automatically activated when the handset is placed into the cradle, breaking the connection | |
Horizon to Horizon |
- A motorised dish mount with gearbox drive arrangement. Mainly used on small dishes. | |
House Technology |
- In the brave new world of the "intelligent" house technology will solve the problems for you | |
HPB |
"HalfPower Bandwidth" | |
HPSCI |
"House Permanent Select Committee on Intelligence" | |
HSC |
"Heat Shield Connection" |
hscsd |
HSCSD |
"High Speed Circuit Switched data" |
2g+ |
HTML |
"HyperText Markup Language" - The standard language used in the creation of web pages which can be read by web browsers |
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HTTP |
"HyperText Transfert Protocol" - A protocol (utilizing TCP) to transfer hypertext requests and information between servers and browsers. |
http://www.brand-new-battery.com/ |
http://www.brand-new-battery.com/ |
- Brand new battery pack for ACER, Dell, HP, Compaq, Sony, Toshiba, Apple, IBM, Asus, Fujitsu laptop, lowest price and best service | |
HUD |
"HeadUp Display" | |
Hybrid Computer |
- Is a computer that uses both analog and digital techniques | |
Hysteresis |
- The difference between the two trip points of a Schmitt trigger |