2.8
Data acquisition project
2.8.1 Serial data acquisition system
This project is an analog to digital data acquisition system that reads temperature from a thermocouple and interfaces this to the computer’s serial port. No special computer interface card is required. This type of interface is suitable for relatively slowly changing physical quantities. The interface system requires a ±5 V power supply and a modest number of integrated circuits which are readily available from electronics parts suppliers. It can be used with virtually any PC equipped with a serial port.
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