The illustration shown in Figure 86 is referred to as a cloc

The illustration shown in Figure 8-6 is referred to as a clock diagram cyclic state chart sequential diagram state diagram Modulus refers to an input on a counter that is used to set the counter state, such as UP/DOWN the modulus of elasticity, or the ability of a circuit to be stretched from one mode to another a method used to fabricate decade counter units the maximum number of states in a counter sequence

Solution

(19) answer is state diagram (option (D))

(20) answer is option (C)