VLSI techniques

Task 1: A combinational circuit with four inputs gives a high output if there are more or equal number of zeros

in the input. The circuit output is low otherwise. Obtain the truth table, and reduced expression for the

output.

Task 2: Realize the Boolean function obtained in Task 1 using CMOS Transistors

Task 3: Provide the Euler path and draw the optimized stick diagram for the realized CMOS diagram in Task 2

using any appropriate tool.

Task 4: Obtain the mask layout for the design in Task 3 in Microwind tool using 0.6 μm technology , with Ln =

Lp= 0.6 μm, Wn= 4.8 μm and Wp= 9 μm and simulate and verify the output.

Task 5: Implement the following Boolean expression using CMOS Transmission gate.

? = ?? + ?? ̅ ? + ?? + ???

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