*If inverted output of D flip-flop is connected to its input how the flip-flop behaves?**Design a circuit to divide input frequency by 2?**Design a divide by two counter using D-Latch.**Design a divide-by-3 sequential circuit with 50% duty cycle.**What are the different types of adder implementation?**Draw a Transmission Gate-based D-Latch?**Give the truth table for a Half Adder. Give a gate level implementation of the same.**Design an OR gate from 2:1 MUX.**What is the difference between a LATCH and a FLIP-FLOP?**Design a D Flip-Flop from two latches.**Design a 2 bit counter using D Flip-Flop.**What are the two types of delays in any digital system**Design a Transparent Latch using a 2:1 Mux.**Design a 4:1 Mux using 2:1 Mux's.**What is metastable state? How does it occur?**What is metastablity?**Design a 3:8 decoder**Design a FSM to detect sequence "101" in input sequence**Convert NAND gate into Inverter in two different ways.**Design a D and T flip flop using 2:1 mux only.**Design D Latch from SR flip-flop.**Define Clock Skew, Negative Clock Skew, Positive Clock Skew?**What is race condition? How it occurs? How to avoid it?**Design a 4 bit Gray Counter?**Design 4-bit synchronous counter, asynchronous counter?**Design a 16 byte asynchronous FIFO?**What is the difference between a EEPROM and FLASH?**What is the difference between a NAND-based Flash and NOR-based Flash?**Which one is good: asynchronous reset or synchronous reset? Why?**Design a simple circuit based on combinational logic to double the output frequency.**What is the difference between flip-flop and latch?**Implement comparator using combinational logic, that compares two 2-bit numbers A and B. The comparator should have 3 outputs: A > B, A < a =" B.">***Give two ways of converting a two input NAND gate to an inverter?***W***hat is the difference between mealy and moore state-machines?****What is the difference between latch based design and flip-flop based design?****What is metastability and how to prevent it?****Design a four-input NAND gate using only two-input NAND gates.****Why are most interrupts active low?****How do you detect if two 8-bit signals are same?****7 bit ring counter's initial state is 0100010. After how many clock cycles will it return to the initial state?****Design all the basic gates NOT, AND, OR, NAND, NOR, XOR, XNOR using 2:1 Multiplexer.****How will you implement a full subtractor from a full adder?****In a 3-bit Johnson's counter what are the unused states?***W***hat is difference between RAM and FIFO?****What is an LFSR? List a few of its industry applications.****Implement the following circuits:**

(a) 3 input NAND gate using minimum number of 2 input NAND gates

(b) 3 input NOR gate using minimum number of 2 input NOR gates

(c) 3 input XNOR gate using minimum number of 2 input XNOR gates assuming 3 inputs A,B,C?**Design a D-latch using (a) using 2:1 Mux (b) from S-R Latch?****How to implement a Master Slave flip flop using a 2 to 1 mux?****How many 2 input xor's are needed to inplement 16 input parity generator?***Convert***xor gate to buffer and inverter.****Difference between onehot and binary encoding?****What are different ways to synchronize between two clock domains?****How to calculate maximum operating frequency?****How to find out longest path?****How to achieve 180 degree exact phase shift?****What is significance of ras and cas in SDRAM?****Tell some of applications of buffer?****Implement an AND gate using mux?****What will happen if contents of register are shifter left, right?****What is the basic difference between analog and digital design?***What advantages do synchronous counters have over asynchronous counters?**What types of flip-flops can be used to implement the memory elements of a counter?**What are the advantages of using a microprocessor to implement a counter rather than the conventional method (flip-flop and logic gates)?**What is the principal advantage of Gray Code over straight (conventional) binary?**What does Pipelining do?**Design divide by 2, divide by 3 circuit with equal duty cycle.**How many 4:1 mux do you need to design a 8:1 mux?**What is D-Word, Q-word?**Define Moore, Mealy state machines. Which one is good for timing?**Design a FSM to detect 10110. What is the minimum number of flops required?**Design a simple circuit based on combinational logic to double the output frequency.**Design a 2bit up/down counter with clear using gates. (No verilog or vhdl)**Design a finite state machine to give a modulo 3 counter when x=0 and modulo 4 counter when x=1.**Minimize: S= A' + AB**What is the function of a D-flipflop, whose inverted outputs are connected to its input?**How to synchronize control signals and data between two different clock domains?**Describe a finite state machine that will detect three consecutive coin tosses (of one coin) that results in heads.**In what cases do you need to double clock a signal before presenting it to a synchronous state machine?**How many bit combinations are there in a byte?**What are the different Adder circuits you studied?**Give the truth table for a Half Adder. Give a gate level implementation of the same.**Convert 65(Hex) to Binary**Convert a number to its two's compliment and back.**What is the 1's and 2's complement of the decimal number 25.**If A?B=C and C?A=B then what is the boolean operator ?*