Simple 8085 microprocessor compatible I/O card
  A simple interfacing project with the 8085-microprocessor kits available in under graduate college labs has been discussed. The interface card to study the I-V characteristics of a p-n diode emphasizes how the microprocessor can be used to do experiments in physics. Also, since the whole project was done within Rs400/- it can easily be popularized. 
Arti Dwivedi and P. Arun