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But it’s buttons are crap, it’s display is LED, tiny and dim, and the HP-16C can just do a hundred things more than the TI programmer. It’s also kind of useful, it can convert dec/hex/oct, and do some logic operations, and can shift bits. I even ported over the ‘nonpareil’ emulator to iOS to be able to always have it with me on my iPhone (for personal use only of course :)).
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Never had a better calculator/computer for software development work. This is the one ‘computer’ that I have kept throughout the years from something like 1985 until now. :) Here I am now, with my HP-16C in front of me. Posted in Hackaday Columns, Slider, Tool Hacks Tagged calculator, hp prime Post navigation And a calculator still makes a nice project. You can only wonder if it will be the last great calculator, or if there are more yet to come. Regardless, the Prime is state of the art and would shame a personal computer from a few years ago. How much longer will we need them? Are the virtual HP Prime applications going to overshadow the physical device? Telephone answering machines gave way to voicemail. Cassettes gave way to CDs and then CDs gave way to digital music. History is replete with products that seemed amazing for their day but turned out to be just a stopgap for something better. There’s also been the inevitable hacking of the communication protocol. Getting to the JTAG port looks pretty intense.
There have been a few attempts to load alien firmware into the device, but there’s no full-blown development system. There are also some enticing pads on the PCB that appear to support a buzzer and I2C communications, but there’s no firmware for it. The only really good hardware hack for the real calculator adds a Samsung battery with a higher capacity to the machine. You’d think that the real hardware would be a prime platform for hacking, but so far that’s still on the to-do list. Here’s a short snippet:ĬHOOSE(N1, "Area or Volume?", "Area", "Volume") ĬHOOSE(N2, "Choose shape", "Rectangle", "Triangle", "Disk") ĬHOOSE(N2, "Choose solid", "Prism", "Cylinder", "Cone", "Pyramid", "Sphere") The programming language isn’t hard to pick up. If you miss your old calculator, there is a define feature that lets you program like a key macro recording. You can even find some from the Internet. You can write programs on the device or if you have the HP Connectivity software (also free) you can write programs on your PC.
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The PC and phone versions will also connect just like a real device. For example, there is an application, HP Connectivity Kit, that lets you talk to a real calculator over the network. So this isn’t a case of someone just writing a pretend calculator, these apps act like the real calculator because it is running the same source code. It appears that these apps are not emulating the actual calculator hardware, but are ports of the calculator code. There are also “lite” versions that are free.
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On iOS the cost right now is $25 and on Android it is $20. They aren’t free, but they are relatively inexpensive.
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However, you can also get official apps for Android and iOS.
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It is easy to think that HP provides the free PC software so you’ll go out and buy the real calculator, and that may be part of it. Other applications include plotting, statistics, solvers, and even a spreadsheet that can hold up to 10,000 rows and 676 columns. It is also programmable using a special HP language that is sort of like Basic or Pascal. It also has an amazing number of applications including a complete symbolic math system based on xCAS/Giac.
However, the HP Prime isn’t just your 1980s vintage calculator. You might wonder why you need a calculator on your computer, and perhaps you don’t. But still, it will run under Wine with no more than the usual amount of coaxing. Of course, that’s free as in no charge, not free as in open source. To start with, HP has a free app that runs on Windows or Mac that works just like the calculator. But if you can’t justify a $150 calculator, there are some cheap and even free options out there to get the experience.
It is hard to call it a calculator since the latest variant has a 528 MHz ARM Cortex A7, 256 MB of RAM, and 512 MB of ROM. Today’s students are more likely to have a TI or Casio calculator, but HP is still in there with the HP Prime. The slide rule sword gave way to calculators hanging from your belt loop, and for many engineers that calculator was from HP. Well, really it was a slide rule hanging from your belt, but it sounds cooler to call it a sword. There was a time when being an engineering student meant you had a sword.
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