**Digital Electronics Interview Questions**

**1)**Flip flop and their working. What is metastable state in flip-flops?

**2)**Construct a d flip-flop from a t flip-flop.Differentiate b/w flip-flop and latches

**3)**What is totem pole?

**4)**Draw the state graphs for a given problem like sequence generator, flip flop etc

**5)**Implement Boolean expressions using MUX (2 to 4,3 to 8,etc)

**6)**Design a decade counter

**7)**Explain internal organization of memory chips

**8)**What is a bit? What is CMOS? Draw the circuit of an adder using NAND gate

**9)**What is a Karnaugh map?

**10)**What are the four methods to reduce a Boolean?

**11)**What is the difference b/w half adder and full adder?

**12)**What are the advantages of CMOS and TTL?What technology is used in CMOS logic?What are VLSI and ULSI? What is the number of components in both?

**13)**Explain synchronous and asynchronous counter

**14)**Minimize the function using Quine McClusky:f=xy+x’y+yz+x’y’z’

**15)**What is prime implicant? Which is the universal flip-flop?

**16)**What is SRAM and DRAM? Compare the two, relative cost of the two.

**17)**What will happen in the case of a power failure for the above?

**18)**What is tristate or high impedance state?

**19)**What are the difference between open collector output and totem pole out put?

**20)**Find the highest clocking frequency of a digital circuit give the rise time ,fall time and propagation delay?

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