Measuring 30b CPU speed reduction

[Katie Wasserman]

(08-11-2015 01:23 PM)Claudio L. Wrote:  

(08-11-2015 05:27 AM)Paul Dale Wrote:  You didn't consider the confusion when the 34S resets during a computation as the battery gets low. We've had several people here wonder why it did this when the low battery indicator wasn't lit. To me, this trumps the battery life and performance -- the calculator needs to work first and foremost.

That's a good point. Nothing wrecks the nerves of a good professional like a reset after 20 minutes of calculations.

There's no fix for this problem other than running the calculator at a very slow speed all the time. The power supply design -- 2 CR2032 cells in parallel -- is about as bad as can be. All of HP's ATMEL chip-based calculators have the same problem, you can't measure the voltage nor power the calculator on one cell at a time. This is a fundamental flaw that requires a power supply redesign. HP used to know how to do this correctly, the HP95/100/200LX, for example, got this right!