Functional Instrumentation Modules
Frederick A. Joerger, Lowell A. Klaisner · IEEE Transactions on Industry Applications · 1975
As the complexity of integrated circuits increases and the cost per package decreases, the trade-off between software and hardware in process control systems needs to be reevaluated. Presently, complete functions can be implemented in a single module, freeing the CPU for more powerful application programs. The functional modules are particularly attractive when a standard interface system is used, since one can obtain a wide variety of equipment from a wide variety of suppliers. Some examples of functional modules manufactured to the computer automated measurements and control (CAMAC) standard are described.