| 摘要 |
PURPOSE:To decrease the number of transducers by activating the transducer inputting the output of an input classification circuit and a scanner having plural analog signal inputs while the conversion mode is switched in response to the input classification. CONSTITUTION:Scanners D1, D2 have plural analog inputs respectively. Input classification circuits E1, E2 output a classification signal and a range selection signal in response to the analog input classification. The scanners D1, D2 have different scan periods respectively. The transducer F1 converts the output of the scanners D1, D2 by using the conversion mode and range set by the output of the circuits E1, E2. The analog output of the transducer F1 is converted into a digital output by an A/D converter H. Thus, plural input signals are converted by using one transducer.
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