A computer is mostly used for data processing. These data comes very often from economics and is entered via the keyboard into the computer.

A different kind of data comes from measurement. These data, wich origine in an analog world must be adapted by transducers to the digital world.

Therefore it is not only necessary to know all about computers, but a good knowledge of how to process analog signals is needed.

The experiments described in this book must be regarded only as examples, because every real application in measurement must have a special distinct solution.

The Commodore C64 is an ideal computer for measurement. Data.can be easily accessed by the USER- or the Expansion port. The Time of Day clock can be used for real time applications.

Have fun in controlling the analog world.