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The Mass Spectrometer. In order to measure the characteristics of individual molecules, a mass spectrometer converts them to ions so that they can be moved about and manipulated by external electric and magnetic fields. The three essential functions of a mass spectrometer, and the associated components, are:
MTP works in a different way than USB mass storage devices. USB devices share their entire file directory, exposing even system files and important programs to the computer. MTP exposes only selected files to the computer, meaning that there is no way to alter the system files when in media programs like iTunes.