Dept. of Electrical and Computer Eng., NCTU Lab 11. Mod 6 Counter Presenter: Chun-Hsien Ko Contributors: Chung-Ting Jiang and Lin-Kai Chiu Dept. of Electrical and Computer Eng., NCTU

Dept. of Electrical and Computer Eng., NCTU Combinational Logic vs. Sequential Logic States of Sequential Logic Mod 6 Counter State Machine of Mod 6 Counter Asynchronous Counter Circuit Design of Mod 6 Counter LAB 11: Mod 6 Counter Bonus: Mod 6 Up/Down Counter Dept. of Electrical and Computer Eng., NCTU

Dept. of Electrical and Computer Eng., NCTU Combinational Logic vs. Sequential Logic 𝑂𝑢𝑡=𝐹(𝐼𝑛) 𝑂𝑢𝑡=𝐹(𝐼𝑛, 𝑝𝑟𝑒𝑣𝑖𝑜𝑢𝑠 𝐼𝑛) Dept. of Electrical and Computer Eng., NCTU

Dept. of Electrical and Computer Eng., NCTU Sequential Logic q depend on the number of states Dept. of Electrical and Computer Eng., NCTU

Dept. of Electrical and Computer Eng., NCTU State Machine of Mod 6 Counter How to reduce the 3-bit Counter to Mod 6 Counter? Dept. of Electrical and Computer Eng., NCTU

Dept. of Electrical and Computer Eng., NCTU State Machine of Mod 6 Counter Clear the State when current State is equal to (110) Clear !! Dept. of Electrical and Computer Eng., NCTU

Dept. of Electrical and Computer Eng., NCTU Falling-edge Trigger JK Flip-Flop Asynchronous Clear Dept. of Electrical and Computer Eng., NCTU

Dept. of Electrical and Computer Eng., NCTU Circuit Design of Mod 6 Counter State=(110) Dept. of Electrical and Computer Eng., NCTU

Dept. of Electrical and Computer Eng., NCTU LAB 11: Implement a Mod 6 Counter IC and devices： 7473 x 2 7432 x 1 LED x 3 Clock Source: NC555 x1 470K Resistor x2 1 uF Capacitance x1 Bonus: Mod 6 Up/Down Counter Design the circuit in your report Also implement the circuit Dept. of Electrical and Computer Eng., NCTU