Question

Given that option 2 is correct for question 1, answer the proceeding questions..

QUESTION 1 The following finite state machine is designed to produce an output which toggles continuously while its input a is high. A simple circuit implements this finite state machine using the controller model, but no additional hardware. a Off On F=0 F=1 Assuming that circuit starts off with F=0, as shown, fill out the timing diagram for its operation below. clk a F clk un a F clk a F

Answer 1

Question 1 COR OFF ON F=o F=1 a Given an output which toggles continuosuly while its input as is high. Circuit start off with F=0 CLK 1 1 1 F O

The finite state machine state that when F=0 and a=0 then F=OFF position F=o and a=1 F=ON 1 10 E = 1 1 and a=o F=ON and a=1 F = OFF 11 and also a=1 then F toggles So this timing diagram produced. Option ais right. Question 2 Take a moment to consider the behabiour described in the timing diagram above. Suppore you wanted the output F, to toggle continously while push-bottom a is high. Answer False We already know that when push-bottom 'a' is high, the output & toggles. I so we don't required to add a pulser to this circuit.

described above, you wanted the circuit Question 3 Suppose that, instead of the behavion to toggle one once per ppush of the push bottom would adding a a pulsep be In this case, appropriate ? Answer True from the finite state machine, when we push as the push bottom la' we assume a=1& Fz1 so F= ON position, but next push the push bottom la a=0 & F=1 sof=ON position. So their no toggole occups. That's why we pulsen be appropriate. would adding a

Question 4 D to FSM D-FF D-FF A. Q D Timing Analysis for this circuit. CLK la

We seen that inverse output of the 2nd D-FF. For this pulser circuit AND gate whose 1st input Qutput of the 1st Dff and and input their is So whatever A input, output of the puber circuit is o. Now from FSM When a=0,F=0 then F= OFF position but 11 a=1, f=0 F=ON position 2-DFF (Polsen circuit) their is but Fon a Delay. so the 3rd option is right,