It is required to design and implement: 1. A counter which counts from 0 to 255 with seven segment display. 
2. A logic function y=∑( 0,3,5,10,16,20,30 35).
 3. Summing and subtracting circuit of 8 digit numbers.
 4. ROM (a,b,c,d) to 60 to 75 in binary. 
5. A timing module which counts time in us or ms or seconds.