Programmed calculators (PMC), popular in the 80s of last century, now almost forgotten. And it is undeserved! These interesting devices, transferred to a program on modern technical base, and today can be very useful. Many people need to make some complicated calculations, and computer with special programs not around. Here in handy PMC to the iPhone. It is able to make calculation, which can not cope and Excel! Very useful can be our PrgCalc for teaching programming - the program contains all the PMC key elements: conditional and unconditional jumps, subroutines and loops. However, it is simple and requires no knowledge of a programming language. Many of today's programmers began developing his career was with PMC.