Blog: CS302 Digital Logic Design Frequently Asked Questions and Answers (FAQ's)

1	How can a D flip-flop can be made to toggle?
2	What is the difference between a counter and shift register ?
3	How many outputs and inputs GAL22V10 have?
4	What is an equivalent representation for the Boolean expression A' + 1 ?
5	What is K-map and why we used it?
6	Each stage in a shift register represents how much storage capacity?
7	what are PLD's?How are they classified.
8	What are Flip-flops?
9	If an S-R latch has a 0 on the S input and a 1 on the R input and then the R input goes to 0, then what the latch will be?
10	In a 4-bit Johnson counter sequence there are a total of how many states, or bit patterns?
11	Explain the truth table and timing diagram of Gated S-R latch and Gated D latch in detail.
12	What is the difference between asynchoronous and synchorous counters?
13	What is meant by D in gated D latch and what is the fuction of this D input. What is the basic difference between latchs and flip-flops?
14	I cannot understand the timing diagram for the master slave flip flop.
15	I am not able to understand the truth table and timing diagram of " S-R Edge-trigged flip-flop, D edge-trigged flip-flop and J-K edge-trigged flip-flop kindly explain it in detail.
16	What is Multiplexer and what are its applications and expression simplification using Multiplexer?
17	Explain S-R Latch? what do you mean by bistable devices?
18	What is ment by triggering or triggering edge of clock pulse and synchronous? also what is triggling trasition of clock?
19	How to up and down the clock in J K flops plz explain the example?
20	For BCD numbers that add up to an invalid BCD number or generate a carry the number 6 (0110) is added to the invalid number, why ?
21	Why do we use +0V and +5V instead of +0V and +1V in DLD, when it is always '0' and '1' ?
22	What is BCD and how do we write them?
23	Where do we use Caveman Number System ?
24	What is Gray Code and how do we write them?