What is MHz?

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What is MHz?
MHz is the shorthand term for megahertz. A hertz is a unit of measurement that applies to frequency, pertaining to the number of cycles per second. One hertz is equal to one cycle per second. The term hertz is named after Heinrich Hertz, a German physicist who made significant contributions in the field of electromagnetism. Prior to having the term hertz, one cycle per second was simply called cycle per second or CPS. Hertz can be used to measure bandwidth, sound, radio frequency, light and electromagnetic radiation. It can also be used to describe the speed of a computer’s central processing unit (CPU) and other components of the CPU such as a video card.

The term ‘mega’ connotes one million or 10 to the sixth power. Therefore, one megahertz means one million cycles per second. Very commonly, we hear megahertz mentioned in radio programming. 1 MHz is usually the standard for amplitude modulation or AM radio broadcast band. 100 MHz is the standard frequency modulation or FM radio broadcast band.

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