# Computer engineering

posted by .

I need help drawing the diagram

A three car race track has sensors in each lane at the finish line. As the cars cross the finish line their respective sensors respond and send a signal to a digital circuit. The three "finish" signals occur in the same order that the cars finish in. The digital circuit has a 3x3 matrix of nine LED's which indicate the placement of each car.

You're hired by the race track committee to design and build a digital circuit that will operate as described above.

The LED indicators must be laid out as shown on the picture.

A push button resets the circuit and extinguishes all lit LED's.

Design Hints:

*The signals from the track sensors are 10mS HIGH pulses. One pulse per race.

*Each LED is lit by an R.S. flip-flop.

*A two bit binary counter will start at zero and be incremented every time any track pulse occurs.

*remember, each track signal only appears for every race

Chips Needed:

3 monostable multivibrators

97474 RS Flip-Flops

1 7476 gating chip

## Similar Questions

1. ### Math(algebra)

If you had to start and finish at the same line of a racetrack, which lane would you choose?
2. ### physics

When Mary is 22 m from the finish line, she has a speed of 4.0 m/s and is 5.0 m behind Sally, who has a speed of 5.0 m/s. Sally thinks she has an easy win and so, during the remaining portion of the race, decelerates at a constant …
3. ### 10

A runner is at the starting gate and hears the starting gun. He begins running with a constant acceleration ai = 0.55 m/s2. He crosses the finish line at d = 100 m and then begins slowing down. It takes him tr to cross the finish line. …
4. ### Physics

The average speed of a car was 60m/s by the time it reached the finish line. The car moved in a straight line and travelled from the starting line to the finish line in 8.0 sec. How far was the finish line?
5. ### Physics

A bicycle racer sprints near the end of a race to clinch a victory. The racer has an initial velocity of 10.3 m/s and accelerates at the rate of 0.370 m/s2 for 7.01 s. What is his final velocity?
6. ### physics

two people run a race around a track. One is in the first lane and the other is in the 7th lane. they both start at the same start line. They both finish in the same amount of time, but the runner in the outside lane is determined …
7. ### science

A book is on top of a table.Earths gravity exerts a constant force of 15 N on the book.why does the booj not move as a result of this force ?
8. ### math

In the 400 meter dash runners stay in their lanes the entire distance around the track. If the runners would all start at the same line (the finish line) only the runner in lane 1 would be running 400 meters. Everyone else would be …
9. ### Ortiz

a race track is 500 meters long.car A moves with a constant velocity of 40m/s, approaching the start line.when car A reaches the starting line, car b, who is waiting stationary at the starting line, accelerates at a rate of 10m/s^2. …
10. ### Physics

a race track is 500 meters long.car A moves with a constant velocity of 40m/s, approaching the start line.when car A reaches the starting line, car b, who is waiting stationary at the starting line, accelerates at a rate of 10m/s^2. …

More Similar Questions