Answer the following problems.

problem 1) Draw a D flip-flop using GAURDED BLOCK in VHDL.

problem 2) prepare a detailed note on Wait statements with the help of suitable exs.

problem 3) Draw a 4-bit adder/subtractor in VHDL.

problem 4) What do you by operator overloading? Give suitable ex.

problem 5) Draw a Finite State Machine that takes input a serial bit stream and outputs a ‘1’ when the sequence “11011” occurs. The overlaps should also be considered.

problem 6)(a) What are different delay models used in VHDL? describe with suitable exs.

(b) prepare down the difference between variable and signal.

problem 7) prepare brief notes on the following:

(a) FPGA.

(b) Design of ALU in VHDL.