ABSTRACT
As mentioned earlier, the elements in the discrete data representation correspond to
discrete voltage levels or current magnitudes in the digital system hardware. If the
digital system is required to manipulate only numeric data, for instance, it will be
best to use 10 voltage levels, with each level corresponding to a decimal digit. But
the noise introduced by multiple levels makes such representation impractical.
Therefore, digital systems typically use a two-level representation, with one voltage
level representing a 0 and the other representing a 1. To represent all 10 decimal
digits using this binary (two-valued) alphabet of 0 and 1, a unique pattern of 0s and 1s is assigned to each digit. For example, in an electronic calculator, each keystroke
should produce a pattern of 0s and 1s corresponding to the digit or the operation
represented by that key.
