HP-12C / HP-12CP CPU stress test using date operation

[Eric Rechlin]

While I applaud your creativity, I don't think this is a very meaningful durability/torture test. This is basically just torturing the CPU, which really should be able to handle a test like this for months or years at a time. With these calculators it will probably be something at a more visible level that will fail -- maybe a key switch will wear out, or plastic in a button will fatigue, or a capacitor will get too old and degrade from time, or something caused by physical damage to the calculator (like running it through a snowblower or dropping it from an airplane).