Answer:
HZ=Hertz
The hertz is the derived unit of frequency in the International System of Units and is defined as one cycle per second. It is named after Heinrich Rudolf Hertz, the first person to provide conclusive proof of the existence of electromagnetic waves.
KHZ-Kilohertz
a measure of frequency equivalent to 1,000 cycles per second.
MHZ
Megahertz
Herz is a measure of frequency per unit of time, or the number of cycles per second. The most common uses for hertz are to describe radio and audio frequencies. It`s abbreviated as Hz. 1 Megahertz, or 1 MHz, is equal to 1 million Hz
