Posted by **Amanda** on Saturday, November 25, 2006 at 11:45am.

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.

*Gating circuits are advised

*remember, each track signal only appears for every race

Chips Needed:

3 monostable multivibrators

97474 RS Flip-Flops

1 7476 gating chip

## Answer This Question

## Related Questions

- science - A book is on top of a table.Earths gravity exerts a constant force of...
- math - In the 400 meter dash runners stay in their lanes the entire distance ...
- Physics - The average speed of a car was 60m/s by the time it reached the finish...
- Physics - A bicycle racer sprints near the end of a race to clinch a victory. ...
- Math(algebra) - If you had to start and finish at the same line of a racetrack, ...
- Physics - a race track is 500 meters long.car A moves with a constant velocity ...
- Ortiz - a race track is 500 meters long.car A moves with a constant velocity of ...
- physics - When Mary is 22 m from the finish line, she has a speed of 4.0 m/s ...
- 10 - A runner is at the starting gate and hears the starting gun. He begins ...
- physics - two people run a race around a track. One is in the first lane and the...

More Related Questions