Question2: you will construct a circuit with outputs to each of three lamps: governing the East/West direction (GEW, YEW, and REW). The output to each lamp should be a 1 if that lamp should be lit in a given 5-second interval (i.e. while one particular 4-bit binary input number is active), and should be 0 if the lamp should not be lit.

fill in the table on the previous page with the appropriate output values for GEW, YEW, and REW.

Construct Karnaugh maps and develop the necessary NAND-only formulas for each of your outputs

[18 marks] A traffic light control at an intersection is controlled by the sequence of binary input numbers shown on the timeline below. Each binary input consists of 4 bits labeled a3,a2,a1, and a0 (in that order). Each input number is present for 5 seconds and is then replaced by the next 4-bit input number in the sequence. After 80 seconds have elapsed, the sequence is repeated. In each 5 -second interval one of three lamps (Green, Yellow, or Red) must be lit in each of the two directions (North/South and East/West) as indicated above by the Traffic Light Sequence for each direction. 02 nds Sequence of 4-bit Binary Input Numbers (in the order a3a2a1a0 )