using PIC16F917 and ATmega328.   Design a line follower car using 3 IR sensors located in front of the car. These sensors are digital sensors sends 1 if the color is black and 0 if it is white. The rover should have two DC motor controlled by PWM with 75% duty cycle.   Submit the answer in PIC and in ATmega

Apply 5B: Use a 7-Segment Decoder to Drive a 7-Segment Display 1. Draw the wiring diagram of the 74LS47 device driving the common-anode 7-segment display through 3300 resistors in series, one per segment. 2. Build the circuit based on the wiring diagram. Tie off any control inputs of the 74LS47 device to enable it as a 7-segment decoder. Test all the segments of the display by temporarily connecting LT (pin 3 of 74LS47) to GND. Then connect D, C, B, and A of the 74LS47 device to power or ground rail and cycle through the 16 combinations to verify that the display shows the characters according to the truth table of the 74LS47 device. 3. Now interface the circuit in Apply 5A.4 with the circuit in Apply 5A.2 such that the display only shows the numbers controlled by N3N₂N₁No that are prime. When the numbers are non-prime, the display should be blank. Hint: use a single device with basic gates.

Consider two coupled dielectric slab waveguides .The two waveguides are identical to one another and have coupling coefficient:C=C12=C21=500 m-1 a)Find the length of the coupled waveguide structure that allows for complete power transfer from waveguide 1 to waveguide 2.b)Now assume that light is launched into both waveguides at the same power P0 and the same phase,but with linear X polarization in waveguide 1 and linear Y polarization in waveguide 2.Write expressions for the power and the polarization (normalized Jones vector)of the light in each waveguide as a function of the distance traveled.Assume that propagation constants and coupling coefficients are the same for both X and Y polarizations.

A chemical process takes place in a reactor vessel continuously, but it has to be monitored for abnormal behaviour. The system has two sensors S1 and S2 that can independently detect an abnormal temperature. They pass an electrical signal to an electrical OR-gate A, which passes a signal on to both the protection units P1 and P2 if either sensor gives a signal. The protection units and the OR-gate get electrical power from electric power unit E1, while sensors get power from electric power unit E2. Build a (qualitative) fault tree for the top event "Protection system not available" using failure of the indicated components.