The previous lab built a 3-bit digital-to-analog converter (DAC). This lab begins looking at what is required to do the inverse operation, analog-to-digital conversion or ADC. As it turns out the heart of the ADC will be the 3-bit DAC you built in the previous lab.
This particular project has been split into two parts. The first part (lab 5) focuses on the additional hardware you will need to add to your system. The second part (lab 6) focuses on the software you will need to make your ADC function correctly.
This lab asks you to design, build, and test a circuit that
compares the analog voltage, 
, generated by your DAC
against a reference voltage, 
and to return a high
logical voltage of 5 volts if 
and return zero
volts otherwise.