Question

Build a breadboard circuit for a sequential circuit using D flip-flops that implements the sequence 0 +2 +3 +0 ... Note that the sequence repeats itself after only three states. • The circuit must implement a single reset switch to ensure being able to start from zero when desired. There is no need to implement a preset switch. • Use So for reset, PA for the clock, L7 for the top bit of the 2-bit number, and L6 for the bottom bit of the two-bit number. • Name your breadboard circuit Midterm Etam 3. If you successfully implement this sequential circuit with a breadboard circuit, you will receive full credit. If you cannot implement the circuit correctly, you should turn in your design work for potential partial credit.

please show work.

Answer 1

present State Lz L Input Next State 2 3 4 DI So Di Do 7 o 0. 0 0 o - 0 0 0 o 0 0 0 o 0 0 0 0 0 0 o 0 XX X X X X. 1 Х 0 X 1656 14650 400 OL 11.10 27 00:01:11 10 Ilo XIX 0 0100 X X Ilolo 0 1 lololo D = Io so Do = 2.7465

3 4 6 L7 L6 2.5V 2.5V 03 Ja U1A U2B WER AND2 ID 5 10 13 9 20 PA ECLK -10 L 11 2CLE .-20. LE U7 WICER 10Hz W.2LR 74LS74D N 14. Yra 74L $74D AND3 so U6 Key = Space NOT

L7 U15 U1 2.5V U3 46 U8 U14 AND2 NAND2 NAND2 NAND2 NAND2 AND3 L6 05 NOT 2.5V U10 NOT U2 14 U7 C 09 NAND2 NAND2 NAND2 NAND2 PA D 0.01 Hz SO U16 1 Key = Space NOT 2 dC