The 162PD is a unique calculator that adds programming functions to the 162. By adopting CANON’s proprietary fixed-program system, programmed calculations can be performed extremely easily. Necessary programs are fixed and built into the machine, allowing routine standardized calculations to be performed with simple operation. Using the four dials on the front panel, arbitrary constants can be externally entered into the program. The standard model comes equipped with one 64-step fixed program card, the same as the 162.