60 Second Timer
For this project, we had to build a circuit in PLD mod in multisim that could count from 0 to 60 and the restart automatically.
This project was very similar since we were still making a circuit to count to a certain number. This project was also different since we were making the circuit count to 59 instead of 80. We also used JK flip flops instead. This circuit also resets by itself unlike the 0 to 80 circuit that had to be manually reset.
Conclusion
1) Synchronous counters are triggered by the same clock which makes them faster and they also have no ripple effect. Asynchronous counters are clocked by the first flip flop and they also have a ripple effect.
2) 193 can count up and down, has asynchronous load and clear, and the number detected is not the number show it is one below that number. 163 can only count up, only starts at 0, has a pre-loadable count, has synchronous load and clear, and shows the number that is detected.
3)First I went to Ms. Zienty's website and opened the demultiplexer setup. Then I started to reference my DMV 0-80 circuit from the previous project since it is very similar since both these projects need to be connected in a way that the 1's and the 10's work together to count to a certain number. Then I replaced all of the gates in the DMV circuit to 163 and 193 since that was what was required for this project. After that I started wiring the circuit to make the counters work. Then I worked on how I was going to get the reset to work. I connected the reset switch and the logic for the 10s counter to the clears on the 10s counters with a nor gate. This then makes the circuit reset at the switch or when the counters reach 60.
4) Basically all of my classmates had the same PLD circuit design but a lot of their boards were circuited a little bit differently for there inputs. Everything else had to be the same though on the breadboard and on multisim in order for the 60 second timer to be able to work.
2) 193 can count up and down, has asynchronous load and clear, and the number detected is not the number show it is one below that number. 163 can only count up, only starts at 0, has a pre-loadable count, has synchronous load and clear, and shows the number that is detected.
3)First I went to Ms. Zienty's website and opened the demultiplexer setup. Then I started to reference my DMV 0-80 circuit from the previous project since it is very similar since both these projects need to be connected in a way that the 1's and the 10's work together to count to a certain number. Then I replaced all of the gates in the DMV circuit to 163 and 193 since that was what was required for this project. After that I started wiring the circuit to make the counters work. Then I worked on how I was going to get the reset to work. I connected the reset switch and the logic for the 10s counter to the clears on the 10s counters with a nor gate. This then makes the circuit reset at the switch or when the counters reach 60.
4) Basically all of my classmates had the same PLD circuit design but a lot of their boards were circuited a little bit differently for there inputs. Everything else had to be the same though on the breadboard and on multisim in order for the 60 second timer to be able to work.