Project Overview
PLD Mode
Like some the previous projects we did, this one used similar aspects like the counters. An example would be the fact that we use an asynchronous counter like how we used two of them in the deli counter. The only difference is that the output is a 60 instead of an 80. In the deli counter project we had to install a switch or button to the circuit to clear, but once pressed, it will start at 00. Since the 60 second counter is a continuous counter, we don't have to add that switch or button. There was a component that we added that was new territory for us. It was the synchronous counter that counts different from the asynchronous counter.
Final Project Conclusion
Synchronous counters and asynchronous counters were used in my design of the 60 second counter. Asynchronous counters and synchronous counters are completely different. One depends on the clock and the other does not. Asynchronous counters do not depend on the clock because they have a preset and a clear. It also reads a delayed effect in the outputs because of something called the ripple effect. The synchronous counters need more of a step by step kind of information than the asynchronous counter. The “163” and the “193” are the two different types of synchronous counters. The “163” synchronous counter is an up counter while the “193” synchronous counter is both an up and a down counter.
By using old projects with circuits that we have worked with, I incorporated it into my project of the 60 second counter. We had to use JK asynchronous counters that count from 0-5. Then we had to use the “193” synchronous counter to count from 0-9. To display the results we used the 7 segment common cathodes. In order to make this work, I had to do some re-wiring. I had to change what the two circuits were detecting. For the JK flip flops I added a NAND gate with 3 inputs, so that it could connect and detect a 6 instead of a 5. For the synchronous “193” I had to detect a 9. Of course since the segment displays can only read one number at a time, I had to connect the circuits that the segments were connected to. This is so they can run together instead of different times.
Some of the designs are going to be different and some are going to be similar. Either way if it works it works. I know I had trouble with it. I wasn’t able to perfect it and I don’t see what the problem with my circuit it but, I understand what is supposed to be happening. I had trouble with the wiring for the most part. Without the correct wiring the whole thing falls apart, or stops working.
By using old projects with circuits that we have worked with, I incorporated it into my project of the 60 second counter. We had to use JK asynchronous counters that count from 0-5. Then we had to use the “193” synchronous counter to count from 0-9. To display the results we used the 7 segment common cathodes. In order to make this work, I had to do some re-wiring. I had to change what the two circuits were detecting. For the JK flip flops I added a NAND gate with 3 inputs, so that it could connect and detect a 6 instead of a 5. For the synchronous “193” I had to detect a 9. Of course since the segment displays can only read one number at a time, I had to connect the circuits that the segments were connected to. This is so they can run together instead of different times.
Some of the designs are going to be different and some are going to be similar. Either way if it works it works. I know I had trouble with it. I wasn’t able to perfect it and I don’t see what the problem with my circuit it but, I understand what is supposed to be happening. I had trouble with the wiring for the most part. Without the correct wiring the whole thing falls apart, or stops working.