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The electric Guitar is a musical instrument, classified as string instrument. The first electric guitar was built by Adolph Rickenbacker in 1931, followed by Les Paul with the invention of the solid body electric guitar, which is the most common electric guitar type today. Electric guitar is used with an amplifier which receives the electrical signal sent from the pickups on the guitar, amplifies it and transmits it to the loudspeaker.

History
The most common type of guitar before the invention of the electric guitar was the classic guitar. With the ascent of guitar performing and the need for a more progressive and varied sound, the electric guitar was invented. Allowing to perform in front of a large crowd and generating a vast range of effects. At first the electric guitar was still similar to the shape of the classic guitar, until Les Paul invented the solid body guitars, which is built without a sound box and relies on an electric pickup system to directly receive the vibrations of the strings.

Structure
[[File:GuitarHorizontal.jpg|400px|thumb|Custom:

1. Headstock

 1.1 machine heads

1.2 nut

 2. Neck

 2.1 fingerboard

2.2 inlays

2.3 frets

2.4 strings

 3. Body

 3.1 pickup

3.2 bridge

3.3 pickup selector switch

3.4 volume and tone control knobs

3.5 output connector (output jack) ]] 

The electric guitar consists of three main parts:
 * Headstock
 * Neck
 * Body

Headstock
On the headstock there are the machine heads, one margin of the strings, which are used to tune the strings so that every string will generate the desired tone. In addition to the machine heads you can find on the headstock the nut, a not large piece of plastic used to separate the strings so they will have the exact space needed between them.

Neck
The main part of the neck is the fingerboard, which is the part where the guitarist presses the strings with his fingers to choose the tone of the sound. On the fingerboard there are frets that show the guitarists where on the fingerboard the tones are changing, each fret represents 1/2 tone. To make it easy for the guitarist to stray across the fingerboard there are inlays to indicate the frets (and sometimes just as a decoration).

Body
The body is the part where the guitarist strums the strings, on electric guitars it is usually done with a pick, but it can also be accomplished with the fingers. On the body there are the pickups or the humbuckers (double pickup), which using the principle of direct electromagnetic induction captures the string vibration and transforms it into electric signals.

The bridge is the other margin of the strings, which is used to hold the strings on the body side, some electric guitars have a whammy bar attached to the bridge that can be used to generate special sound effects while playing.

You can also find on the body the switch that is used to choose which of the pickups work and the volume and tone control knobs. The electric guitar connects to the amplifier using a cable connected to the output jack on the guitar body.