Braille is a system which allows a blind person to read alphanumerics by feeling a pattern of raised dots. The table below shows the correspondence between BCD and Braille. Design a circuit that converts BCD to Braille. A B CD O o O O O O O 1 001 O 1 O O O 1 O1 O1 O 1 1 O 1 OO 1 O O1 a) Assuming a dot corresponds to logic 1 and the absence of a dot corresponds to logic 0, give the complete truth table. From the Karnaugh maps find the minimal equation of W Realize the logic circuit of W b) c)