sixty second timer
For this project, we were tasked with creating a timer that counts from 00-59 and restarts. The circuit also had to contain a switch or button that could restart the count at any time.
This project is different from the previous project because instead of counting from 00-80, this time the circuit must count from 00-59. Also the DMV display had to stop at 80 while in this project, the timer has to restart when it reaches 59 by itself. In both projects, the circuits had to have a restart button/switch that could restart the count at any time.
conclusion
1. The difference between synchronous and asynchronous circuits is that synchronous circuits are connected to the same clock. Because of this, they will not have a ripple effect and are fast. Asynchronous circuits are not connected the same clock and will have a ripple effect and will be slower.
2. A '163 counter is a 4 bit up counter and has a synchronous load and clear. This counter shows the number set and then resets. A '193 counter is a 4 bit up/down counter and has an asynchronous load and clear. This counter detects the number set to it and stops or restarts at the number before.
3. To start the project, I reused the circuit created for the previous project which was the DMV Display project. I did this because the projects' similarities would save me time.To start I replaced the D flip-flops with J-K flip-flops (because it says so) and instead of using 4 of them, I used 3. I then set the timer to equal 0 and connected the flip flops to be an up counter. I then changed the asynchronous counter at the bottom to a synchronous counter. I then set that to count from 0-9. I then put a digital clock on and connected it to the synchronous counter. Then I connected the clock from the first flip-flop to load and connected the interactive digital constant to the clear on the counter and to the AND gate, connecting it to the flip flop outputs. Finally, I connected the flip-flops and counter to the decoders that were already there.
4. Seeing that most people based this project off of the last one, their circuits again looked different because of the changes made to meet the requirements of the project.
2. A '163 counter is a 4 bit up counter and has a synchronous load and clear. This counter shows the number set and then resets. A '193 counter is a 4 bit up/down counter and has an asynchronous load and clear. This counter detects the number set to it and stops or restarts at the number before.
3. To start the project, I reused the circuit created for the previous project which was the DMV Display project. I did this because the projects' similarities would save me time.To start I replaced the D flip-flops with J-K flip-flops (because it says so) and instead of using 4 of them, I used 3. I then set the timer to equal 0 and connected the flip flops to be an up counter. I then changed the asynchronous counter at the bottom to a synchronous counter. I then set that to count from 0-9. I then put a digital clock on and connected it to the synchronous counter. Then I connected the clock from the first flip-flop to load and connected the interactive digital constant to the clear on the counter and to the AND gate, connecting it to the flip flop outputs. Finally, I connected the flip-flops and counter to the decoders that were already there.
4. Seeing that most people based this project off of the last one, their circuits again looked different because of the changes made to meet the requirements of the project.