Customer Review

6 of 6 people found the following review helpful
5.0 out of 5 stars hp 50g VS TI89T, 28 Jan 2013
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This review is from: Hewlett Packard HP50G Graphing Calculator (Office Product)
Hi All,

I have owned a TI89T for a couple of years now and I have found it to be very good, generally it's easy to use and has a very good build quality. Recently though, I was surfing Amazon and I noticed the TI89T competitor, the hp50g going for half price so I bought one, I found it be the most complicated graphing calculator that I have ever used. Just to learn to navigate around takes in access of two weeks solid study, and if you leave it for any length of time and decide to come back to it again you will find you have forgotten how to use it.However, I have persavered with it on many occasions and all you've got as reference are 3 hp manuals to work through, there are no 3rd party guide books, in English, available to buy which might have helped.
hp boast that their calculator can work in algerbriac mode or RPN mode, however all the examples in the guide manuals are in RPN mode with very little in algerbriac mode, having two modes just serves to confuse you further. On the programming side the hp50g uses RPL programming language(note, this isn't simplistic basic language), I spent 4 days solid just to learn how to do very basic programs, lots of fustration.

The build quality isn't as high standard as the TI89T but it is adiquate for the job, one nice feature (and there are many) the hp50g has, it allows you to write rpl programs on your pc, using Windows notepad, and then download the finished program to your hp50g using hp connect software via the calculators usb.

Assuming you know your way around the hp50g it's actually got more to offer than the TI89T particularly with a price tag of around 75.00 all in but be for warned you need to spend at least 2 weeks solid on it before it starts to bear fruit.I've just found out today that the hp50g can convert between Laplace transform and inverse Laplace transform, its one heck of powerful graphing calculator and is noticably faster than the T89T.

T89T currently sells at around 150, whilst the greater function support hp50g=75.00
If you do decide on a hp50g be prepared for a very high steep learning curve and some dedication.

As of 8/3/13, I've just completed a RPL program which converts Butterworth filter polynomial coefficients into resistor/capacitor values for active bandpass filter design, where, using a scientific calculator would take about 15 minutes to compute and alot of faffing, with my 50g, it takes less than 1 second to compute. The hp50g calculator is now my calculator of choice.

Cheers
Commie
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