The HP 20b, a relatively new calculator, is also based on Atmel’s implementation of the ARM 7 microprocessor, which itself was developed in the 1980s. The HP 35s, introduced a couple of years ago, and the HP 12c Platinum calculators were based on the incredibly long-in-the-tooth, 8-bit 6502 microprocessor architecture, which you would find under the hood of the original Apple II microcomputer circa 1977. However, HP recently introduced a new, much faster version of the HP 12c that employs an Atmel implementation of the 32-bit ARM 7 processor running a software emulation of HP’s Saturn microprocessor.
#Hp calculator emulator series
The original HP 12c and HP 15c calculators were based on HP’s proprietary 4-bit Saturn Nut series of calculator microprocessors.
#Hp calculator emulator Pc
HP 35s calculator emulation running on a PC HP developed microprocessor emulators for both host platforms.
#Hp calculator emulator code
The emulations all run the original code from the corresponding original calculators so the virtual calculators produce precisely the same results as the real calculators-only they produce answers much faster because the underlying PC and iPhone/iPod Touch microprocessors run at hundreds of MHz instead of a few MHz. The first calculator emulations from HP that run on Apple’s iPhone and iPod Touch include: The first calculator emulations from HP that run on the PC include: HP 15c calculator emulation running on an Apple iPhone “We just felt that HP calculator emulators should really come from HP,” said HP’s Director of Calculator Product Development Sam Kim. Now HP itself has entered the market with multiple offerings running on PCs and Apple’s iPhone and iPod Touch. You could teach a middle-school or high-schooler to solder with this kit and then teach them the power of RPN on a classic device with a rich history and readily available programs found on the internet.The HP calculator enthusiast community has long had calculator emulators running on the PC. So, you don't have to sacrifice power for ease of assembly. If not, there is still a very attractive PCB with printed key labels and rubber feet so it will rest on your desk without wobbling. If you have the enclosure and overlay, finished product looks very nice and can be pocketed without fear of damaging anything. The kit worked correctly as soon as I inserted a new battery. The component spacing and clear labeling printed front-side made soldering child's play. I had the soldering done in under two hours with only one mishap caused by my impatience when I bent a lead on one of the tactile keys. This kit combines the function catalog and keystroke programmability of the HP41 with an extraordinarily well designed through-hole PCB. I've never owned a true HP41 but I knew how powerful they are. But in this case, I ordered the HP-41 variant and was very impressed.
The easiest ones are usually basic algebraic calcs with limited functions. Such as the usbasp.įor the last 5 years, I've been trying solder-your-own calculator kits.
To upload new firmware you will need a AVR SPI programmer. The case, battery and overlay are not included. The key overlay is printed on a standard Overhead Projector transparent film and can be downloaded at: The 3D case STL files can be downloaded from thingiverse.
Power consumption: 1♚ off, 350♚ idle, 3mA working (this is with speaker and backlight off).Runs on a single ATMEGA328 8 bit microcontroller running 8MHz (same as Arduino Uno).Continuous memory (Memory is not lost when calculator is turn off).Memory registers: same memory as the original.Runs about 4 to 5 times faster than the original (voyager series).Hardware emulating an Classic HP Calculatorsīuild a fun, educational easy to build calculator.
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