Home work: Logic Gates a) Write a VHDL code for the circuit of figure below. Notice that it is purely combinational, so a PROCESS is not necessary. Write an expression for d using only logical operators (AND, OR, NAND, NOT, etc.). b) Synthesize and simulate your circuit. After assuring that it works properly, open the report file and check the actual expression implemented by the compiler. Compare it with your expression. a D Do —d

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6. i) For the circuit shown in Figure Q16, Find the logic functions of X and Y Figure Q1 ii) Simplify X and Y using Boolean algebra. hp ort delete

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parity generator design, construct and test a circuit that generates an even parity bit ffrom four messages bits . use XOR gates. adding one more XOR gate, expand the circuit so that it generates an odd parity bit also.

Find a logic diagram that corresponds to the VHDL structural description in below figure. Note that complemented inputs are not available

Design a circuit called half adder (HA) which adds two 1-bit numbers, a,b and produces 2-bit output, c. a. Draw the truth table of the circuit.b. Find the Boolean functions of each bit of the output.c. Optimize the Boolean functions.d. Draw the logic diagram of the optimized circuits.e. Write the VHDL code of the logic diagrams by using “Dataflow modeling” method f. Simulate the circuits that you have designed in 1.e. Prepare a simulation waveform for you report.g. Produce the RTL schematic for the circuit that you have designed in 1.e.

Find the minimum output expression for circuit of figure below and draw logic circuit. A B

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Any simple example is fine.