
Chapter 5
Digitising
The input signal from the attenuator and Y preamplifier is digitised
by an ADC (analog to digital converter, also written A/D), so that
it can be stored in the acquisition memory. Each sample of the
signal is converted to a binary number, as digital circuitry does not
use the decimal notation with which we are familiar. In the latter,
there are ten digits, 0 to 9, and larger numbers are indicated by
putting digits in the tens, hundreds or thousands columns etc. as
necessary. In binary notation, there are only the two digits 0 and 1,
larger numbers being represented by putting ...