Industrial data acquisition for the 1970s

Conventional methods of data acquisition are being challenged by new engineering philosophies as well as the availability of integrated circuits and other advances in hardware. The frequency¿domain approach, in which analogue voltages are converted to frequencies at source, shows great promise, and eliminates many of the problems associated with analogue-digital conversion and relay scanning. As new design philosophies for data-acquisition equipment emerge, so new types of application are made possible.