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Digitizer
In telecommunication, the term digitizer has the following meanings:
1. A device that converts an analog signal into a digital representation of the analog signal.
Note: A digitizer usually samples the analog signal at a constant sampling rate[?] and encodes each sample into a numeric representation of the amplitude value of the sample.
2. A device that converts the position of a point on a surface into digital coordinate data.
Source: from Federal Standard 1037C and from MIL-STD-188
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