Digital Electronics Question Bank
Digital Electronics Question Bank
Digital Electronics Question Bank
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UNIT IV :<br />
PART-A:<br />
1. What is a characteristic table?<br />
A characteristic table defines the logical property of the flip-flop and completely<br />
Characteristic its operation.<br />
2. Give the characteristic equation of a SR flip-flop.<br />
Q (t+1)=S+R1Q<br />
3. Give the characteristic equation of a D flip-flop.<br />
Q (t+1)=D<br />
4. Give the characteristic equation of a JK flip-flop.<br />
Q (t+1)=JQ1+K1Q<br />
5. Give the characteristic equation of a T flip-flop.<br />
Q (t+1)=TQ1+T1Q<br />
6. Define bit time?<br />
The amount of transmit a single bit.<br />
7. What is Excitation table?<br />
A tabular representation of the operation of a flip-flop.<br />
8. What is meant by Hold-time?<br />
In Flip-Flops and memories, a minimum amount of time after the application of a clock(or<br />
Read/write) signal, when data(s) or address inputs must remain stable.<br />
9. what is latch?<br />
A temporary storage device consisting of D-type Flip Flops. Its contents are fixed at<br />
their current values by transition of the clock and remain fixed until the next clock transition<br />
occurs.
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