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Casio Graphing Calculator

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Casio FX-115ES Advanced Scientific Calculator with 2-Line Natural Textbook Display

I had an upcoming exam that specifically prohibited programmable calculators, so while I have quite the “stable” HP RPN machines, all of them were out. The FX-115ES was what I found as a substitute, and I’m quite impressed, especially for the price (which is $18 at Target, BTW). The machine works well and is quite feature-laden and easy to use — I believe it is the most powerful non-programmable, non-graphing machine out there, and at a price where you can afford a few spares to spread around your home, office, car, etc. so that you don’t have to worry about losing one.

I’ve had tons of calculators over time, with the Casio FX-4000P (back in the late ’80s) being the first truly memorable one (my brother had an FX-7000G, the first graphing calculator). I switched to HPs in college, and I am still an RPN die-hard (I’m eagerly awaiting the release of the 30th anniversary HP-35s this summer!), but I can still appreciate a quality product such as this from Casio. (more…)

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HP graphing calculator

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HP 50g Graphing Calculator (F2229AA#ABA)


I just received mine in the mail today. I do not think that it is officially even released in the US; at least, it is not on HP’s English language website yet.

This is the first HP calculator I have ever owned and my impressions so far have generally been very positive. It seems just like the 49g+, but with a fully plastic case and keyboard, a serial port, and a four cell battery compartment.

Compared to the TI-89, the HP-50 seems more powerful. The CAS seems a little stronger, it has a lot more built-in mathematical, scientific, and engineering applications, and the hardware is far superior. The calculator runs on a ARM processor similar to the speeds on low-end pocket PCs, unlike the TI-89′s slow custom processor, but the CAS runs on an emulated processor, so it is not as fast as it could be. The HP also has an infrared port and a SD expansion card, so it has no realistic memory limits.

Its liabilities are that the screen seems a little smaller than the TI-89′s, the calculator is not nearly as user-friendly as the TI-89′s, the calculator only comes with a basic manual of about 100-200 pages while the full 900 page manual is only available on CD, and there does not seem to be as much third party support as for the TI-89.

But if you want the most powerful portable mathematical system available in a handheld calculator, this is definitely a must-buy. (more…)

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Graphing calculator TI 84 plus

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Texas Instruments TI-84 Plus Graphing Calculator

Building on the hugely popular TI-83 Plus, which is perhaps the best-selling calculator of all time, the TI-84 Plus is completely compatible with its predecessor. From that well-established platform, this new model adds more speed (a processor that’s 2.5 times faster), more memory (24 KB RAM and 480 KB of Flash ROM), an enhanced high-contrast display (eight lines by 16 characters), and more beloved Apps. (more…)

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Graphing calculator 83

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Texas Instruments TI-83-Plus Silver Edition


Anyone who is familiar with the BASIC computer language can program the TI-83+ with ease. The calculator supports the use of almost every function through a program. Programs can be typed directly into the calculator, or on a computer. The TI-83+ also supports a special form of programs called Flash Applications. Flash Applications are generally quite complex, and are written in a special language on the computer.

The manual included with the calculator is superb. It goes into detail on every single option the calculator supports. Every section includes a Quick Start tutorial that provides an practical example covering many of the chapter’s topics. Learning to program in TI-BASIC, the programming language of the calculator is possible through reading the entire manual and following the examples. (more…)

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TI Graphing Calculator

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Texas Instruments TI-84 Plus Graphing Calculator

The new TI-84 Plus is a wonderful calculator. If anybody has had the TI-83 or 83 Plus, they know how easy and reliable it is. The 84 Plus is an all-around imprivement on the older version and even worth the additional $15-$20. I have had it since school started and have noticed than any problem I enter, it is solved immediately upon pressing enter, or solve. The speed is a great improvement over the 83-Plus. The computer features are nice, but rarely used by myself. For anybody who is supposed to buy a TI series calculator for school, the 84 Plus us definitely the one to pick up this year and for the next few years I assume. Easy, fast, reliable, durable, and even sleek. As long as you handle it properly and use it enough, you will get all of your $110 out of the TI-84 Plus. (more…)

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