Question

Differences between characteristic table and excitation table

Answer 1

Answer:

Excitation table is used for design of flip-flops and counters. Truth table contains inputs and excitation table takes outputs as inputs.

A characteristic table has the control input (D or T) as the first column, the current state as the middle column, and the next state as the last column.

Answer 2

characteristic table and excitation table

Explanation:

Characteristics Table:  the next state of flip-flop in terms of flip-flop input and current state.

Excitation Table: the flip-flop input variable as function of the current state and next state.

• The characteristic table  has the control input (D or T) as the first column, the current state as the middle column, and the next state as the last column. It usually tells  how the control bit affects the current state to produce the next state.

• The excitation table  has the current state as the first column, the next state as the second column, and the control bits as the third column. Think of a state you basically have (first column), a desired state (second column), and you need to set a control bit (third column) to get the desired state. The  table here is used to implement  FSM  

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