Best Hewlett Packard Calculators for Graphing Calculator

excellent product for simple engineering calculations.

this product has been very helpful in mathematical sessions and tutoring.

however, any serious scientist or engineer (such as myself) always keeps a trusty calculator close-at-hand for quick work in the office or field.

i am a circuit design engineer and happen to love rpn, as i owned an hp-28s for 15 years until the battery cover could not be glued shut anymore (the calculator still works fine, but i don't feel

i like it especially for trips and outside activities when i can do quite useful mathematical explorations that i don't normally have time for at home or in the office with my busy schedule.

not that there's that much software out there for hp calculators, as compared to ti models -- there's even more stuff for my not-permitted-in-most-classrooms ti-89 than there is for my cherished hp

it addresses most of the complex math problems.

i can't confirm this fact as of yet, but it uses 4 aaa batteries as well as a lithium backup battery to be used as a backup while changing the main batteries.2) most high schools require ti units,