4. They include supporting circuits for amplifying,
modifying or selecting certain positions of these signals.
The transducers convert the physical forces into an electrical
signal which can easily be handled and transmitted for
measurement.
5. Multiplexer
The multiplexer accepts multiple analog inputs and
connects them sequentially to the measuring instrument.
Signal Converters:
The signal converts are used to translate “analog signal to
a form which is suitable for the next stage that is analog to
digital converter”. This block is optional one.
6. Analog to Digital converters
The analog to digital converter converts the
analog voltage to its equivalent digital form. The
output of the analog to digital converter may be fed
to the digital display devices for display or to the
digital recorders for recording. The same signal may
be fed to the digital computer for data reduction or
further processing.
7. Auxiliary equipments
The function of the auxiliary equipments includes
“linearization and limit comparison of the signals”.
Digital recorders
They record the information in digital form. The
digital information is stored on magnetic tape
recorders, type written pages, floppies etc.
