A gigahertz is a billion hertz or a thousand megahertz, a measure of frequency. Each cycle is one nanosecond. To help compare orders of magnitude this page lists dimensionless numbers between 109 and 1012. ... The hertz (symbol Hz) is the SI unit of frequency. ... A megahertz (MHz) is one million (106) hertz, a measure of frequency. ... Sine waves of various frequencies; the lower waves have higher frequencies than those above. ... To help compare orders of magnitude of different times this page lists times between 10-9 seconds and 10-8 seconds (1 nanosecond and 10 nanoseconds) See also times of other orders of magnitude. ...

Radio waves sent at gigahertz frequencies usually travel in line of sight. Gigahertz frequencies or microwaves are also used in cellular telephones, microwave ovens, radar and other applications. Radio frequency, or RF, refers to that portion of the electromagnetic spectrum in which electromagnetic waves can be generated by alternating current fed to an antenna. ... Cellular redirects here. ... Microwave oven A microwave oven is a kitchen appliance employing microwave radiation primarily to cook or heat food. ... This long range radar antenna (approximately 40m (130ft) in diameter) rotates on a track to observe activities near the horizon. ...

Experts in the field of radiocommunications classify categories of spectrum by bands. The names of these bands are idosyncratic, but are used often in radiocommunications.

• L-Band 1-2 GHz (1000 MHz = 1 gigahertz GHz)
• S-Band 2-4 GHz
• C-Band 4-8 GHz
• X-Band 8-12 GHz
• Ku-Band 12-18 GHz
• K-Band 18-27 GHz
• Ka Band 27-40 GHz
• V-Band 40-75 GHz
• W-Band 75-110 GHz

CPU frequencies

AMD and Intel released their first desktop processors over 1 GHz in 2000 (though in 1999 a heavily overclocked AMD system broke the gigahertz barrier). Advanced Micro Devices, Inc. ... Intel Corporation (NASDAQ: INTC) (founded 1968) is a U.S.-based multinational corporation that is best known for designing and manufacturing microprocessors and specialized integrated circuits. ... This article is about the year 2000. ... 1999 is a common year starting on Friday Anno Domini (or the Current Era), and was designated the International Year of Older Persons by the United Nations. ...

As of 2005, most of the commonly sold microprocessors work with clocks that have frequencies ranging from 2.5 to 3.2 gigahertz. 2005 is a common year starting on Saturday of the Gregorian calendar. ... Microprocessors, including an Intel 80486DX2 and an Intel 80386 A microprocessor (abbreviated as µP or uP) is a computer electronic component made from miniaturized transistors and other circuit elements on a single semiconductor integrated circuit (IC) (aka microchip or just chip). ...

See also

hertz, kilohertz (10³Hz), megahertz (10⁶Hz), terahertz (10¹²Hz), petahertz (10¹⁵Hz). The hertz (symbol Hz) is the SI unit of frequency. ... A kilohertz (kHz) is a unit of frequency equal to 1,000 hertz (1,000 cycles per second). ... A megahertz (MHz) is one million (106) hertz, a measure of frequency. ... A terahertz (THz) is 1012 hertz or a thousand gigahertz, a measure of frequency. ... A petahertz (symbol PHz) is a measure of frequency equal to a quadrillion hertz or a thousand terahertz. ...

megahertz << gigahertz << terahertz A megahertz (MHz) is one million (106) hertz, a measure of frequency. ... A terahertz (THz) is 1012 hertz or a thousand gigahertz, a measure of frequency. ...