Design and implement a digital circuit which will accept a 4-bit binary number and produce its equivalent hexadecimal number using seven-segment display. That is, when the switches SW1, SW2, SW3, SW4 are set as 0000, 0001, 0010, 0011, 0100, 0101, 0110, 0111, 1000, 1001, 1010, 1011, 1100, 1101, 1110, 1111 (all are binary inputs), then your circuit should produce 0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F respectively in the seven segment display. Before implementing the circuit, simulate your circuit using Logic Works and include a printout of your logic circuit and simulation in the project report. To implement the circuit, you can use any type of IC-chip available in the Digital Design Lab. Hint: A seven segment display has seven outputs (a, b, c, d, e, f, g ) which are selected to be logic 0 or logic 1 depending upon the character you want to be displayed. Thus, if the input from the switches is 1111, you would like outputs to be set as a =1, b=0, c=0, d=0, e=1, f=1, g=1 (to display character F). Seven-Segment Display Outputs Page 3 of 3 Project II The traffic department in Oman is trying out a new system of traffic lights based on the usual European model. You have to design a synchronous digital circuit which operates this new type of traffic light at a simple road crossing. There are six lights to operate. The Red, Amber, and Green lights in the North- South direction will be designated as R1, A1, G1. Similarly, the lights in the East- West direction will be called R2, A2, and G2. When the digital signals are in the Logic-1 state they turn their respective lights on, otherwise the lights are off. A digital clock signal will be supplied and at each clock pulse the lights should change according the schedule given above. There are two types of road crossing: safe crossings that use a simple sequence, and unsafe crossings that require a longer (delayed green) sequence. One digital input signal called SAFE will indicate whether the road crossing is considered safe. Thus, you have a oneinput, six-output synchronous system to design. Before implementing the circuit, simulate your circuit using LogicWorks and include a printout of your logic circuit and simulation in the project report. To implement the circuit, you can use any type of IC-chip available in the Digital Design Lab.