HP08: HP-50g Programming 01

First session of an introduction to the programmin of the HP-50g or HP-49g+. Programming it in RPN, assuming that the input parameters are alredy entered in the stack by the user, previous to the execution of the program. As an example, a tiny program to compute the parallel equivalent of two resistors. (Note: this program, unmodified, also computes the parallel of two complex impedances).