sixty second timer
PLD
The design counts from 0-60, loops, and resets. The circuit uses JK flip-flops and 163 to take the input signals of power, ground, frequency clock, and data to send output signals to seven segment displays. A reset switch sets both displays to 0.
The design counts from 0-60, loops, and resets. The circuit uses JK flip-flops and 163 to take the input signals of power, ground, frequency clock, and data to send output signals to seven segment displays. A reset switch sets both displays to 0.
Conclusion
Synchronous circuits use the clock and asynchronous circuits don't. 163 only counts up and to the number it is set at.193 counts up or down and stops at the number before what it is set to.
To design a circuit that counts 0-60 i used two seven segment displays, digital highs and lows, wires, a clock, jk flip-flops, 163, AND and NAND gates. I placed 3 jk flip flops at the top of the circuit. I connected each j and k to power, each Q to output and Q* to clock. Each preset is connected to power and each clear is connected to the output so that it is set to count to 5. On the bottom of the circuit i used a 163 counter. Each input is connected to ground so that the count starts with 0 and the outputs are set to count to 9 because 163 stops at the set number. the output of the bottom circuit is connected to the clock for the top so that it moves when the bottom loops. a reset switch is attached to the inputs of both circuits to reset both to 0. a clock is connected to the bottom circuit to set the frequency for the count.
Some of my classmates created different circuits by using different gates and counters.
Synchronous circuits use the clock and asynchronous circuits don't. 163 only counts up and to the number it is set at.193 counts up or down and stops at the number before what it is set to.
To design a circuit that counts 0-60 i used two seven segment displays, digital highs and lows, wires, a clock, jk flip-flops, 163, AND and NAND gates. I placed 3 jk flip flops at the top of the circuit. I connected each j and k to power, each Q to output and Q* to clock. Each preset is connected to power and each clear is connected to the output so that it is set to count to 5. On the bottom of the circuit i used a 163 counter. Each input is connected to ground so that the count starts with 0 and the outputs are set to count to 9 because 163 stops at the set number. the output of the bottom circuit is connected to the clock for the top so that it moves when the bottom loops. a reset switch is attached to the inputs of both circuits to reset both to 0. a clock is connected to the bottom circuit to set the frequency for the count.
Some of my classmates created different circuits by using different gates and counters.