definition of digital electronics :
The implementation of two-valued logic using electronic logic gates such as and gates, or gates and flip-flops. In such circuits the logical values true and false are represented by two different voltages, e.g. 0V for false and +5V for true. Similarly, numbers are normally represented in binary using two different voltages to represented zero and one.
it includes sequential ckts and combinational ckts ...
for more dtails : pls log on :
www.gurukpo.com