10. In this prоblem yоu will design а series оf deocder devices. а) Drаw a functional block diagram for a 1-to-2 decoder with active-high input X, active-low outputs Ya, an active-low enable (labeled E1) and an active-high enable (labeled E2) . This is NOT a tri-state enable. Use the normally used subscripts for the two Y outputs (Y0 and Y1). b) Draw a functional block diagram for a 2-to-4 decoder with active-high inputs Xa, active-low outputs Yb, an active-low enable (labeled E1) and an active-high enable (labeled E2) . This is NOT a tri-state enable. Use the normally used subscripts for the two X outputs (X0 and X1) and the four Y outputs (Y0 through Y3). c) Draw a truth table for a 3-to-6 decoder with no enables (with inputs X0-X2 and outputs Y0-Y5. d) Design a 3-to-6 decoder using a 1-2 decoder and the minimum number of 2-to-4 decoders (as drawn in parts a and b) and no other device(s). (If necessary, also use SSI gates for much less credit.)