Design and Analysis of Half Adder:

   The half adder consists of two inputs and two outputs. Circuit was implemented using cmos 
available in eSim software. The udemy course of DAC IP implementation helped a lot and also 
solved some of the doubts regarding the modification of netlist according to the models available 
in sky130.

   The sky130 folder should be placed near the netlist file for easy simulation. For those who are 
new to the software it will be better to through all the tools available in the software. The slack 
group for this marathon also helped a lot in solving the issues in ngspice and error associated with it.

  I was getting zero output after executing the .cir file, i followed the error and searched for solution
and found out that the sky13o file is missing some contents and then it was updated and all the necessary 
contents are added. For the input part, the pulse function is used which is mentioned in the udemy course and
also available in online sources.

   Whatever the doubt, the faculties and other students in slack are very helpful and tried their best to 
solve the issue and responded as fast as possible. 

