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                                                           History of Guitar

Like most European string instruments, the guitar dates back thousands of years. The earliest ancient origin of what is now the modern guitar can be traced back to the Middle East, central Asia and India as early as 5,000 years ago. In 40 AD the Romans adapted and developed the four-string guitar: the oud. Elsewhere in Europe the Scandinavians developed a six-string instrument: the lut (lute). By 1200 AD, the four-string instrument had developed into two distinct types. The first, guitarra, morisca or Moorish guitar, was an instrument with a wide fingerboard and rounded back and several sound holes. The second was the guitarra latina, a Latin guitar, which resembled the modern guitar having a single sound hole and narrower neck.

The 15th and 16th century Spanish vihuela or "viola do mano" is usually considered the immediate ancestor to the modern guitar. It combined lute-like tuning with a guitar-like body. Its construction is thought to be a design combining the features of the Arabic oud and the European lute. 
        
  There are two types of guitar. 

    1.Acoustic guitar are not dependent on an external amplification device to be heard. It uses a soundboard, which is a wooden piece mounted to the front of the guitar body. 

     2.Electric guitar can be constructed with a solid body, semi-hollow and hollow body. And it use electromagnetic pickups, which convert the vibration of the steel strings into electronic signals, which are carried by a cable or transmitter to an amplifier.
   

The paRts....of sTeel-string Acoustic Guitar!!!

Acoustic guitars produce sound due to a rather complicated interaction (or "coupling") between the various components of the instrument. (See Resonant Guitar Modes.) From here on, the word 'guitar' will exclusively refer to the acoustic guitars only.

Anatomy of a Steel-String Acoustic Guitar

(Image reproduced courtesy of Gilet Guitars)

Note that guitar terminology is by no means fixed or completely standardised---The soundboard is often called the 'top-plate', and the sides are often called the 'ribs', for instance.

Nylon guitars usually have rather rounded bodies and the neck joins the body at half the effective string length (12th fret). The finger board is relatively wide (about 60mm at the body) and the top three strings (highest pitch) are made of nylon and the lower three are generally composite (silver-plated copper wire wrapped around a silk fiber core).  

The steel-string guitar family tends to have a little more geometric variation than the nylon guitars. Most models have the neck join the body at the 14th fret, to increase the fingerboard's effective length. The strings are usually either steel alloy or bronze.

An example of a classical. An example of a POO ("Triple-O") steel-string.

Examples of: a Dreadnaught. The O ("Double-O"), or the Jumbo.

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