A common requirement is conversion from one digital code to another. Develop a table of the BCD code and the excess-3 code [see Problem 6.2.2(a)] to be derived from it, for the decimal digits 0 to 9. Show a block diagram for a BCD to excess-3 code converter.
Problem 6.2.2(a)
(a) Excess-3 code is a 4-bit binary code for the 10 decimal digits and is found useful in digital computer arithmetic. Each combination is found by adding 3 to the decimal number being coded and translating the result into direct binary form. Set up a table for the excess-3 code for the 10 decimal digits.