I need a little help with a lab project that I am making for my Micro Processor class. My instructor gave me the idea of making a gun chronograph. He wants me to use 4 qrb1134 reflective sensors to detect an object. The qrb1134's will be in two pairs set at a certain distance apart. The purpose for these sensors are to start and stop an internal clock of a MEGA16 micro processor trainer board. I am also supposed to write a program for the MEGA16 to perform that function and to calculate the velocity of the object that passed through the two pairs of QRB1134. The program is also supposed to display the velocity on the CRT. I am very new at programing and really don't know where to begin. Any help will be appreciative.