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– A Slide Rule doesn’t need scheduled hardware maintenance.

#Hp 48g rom open source emu48 software

– You don’t get junk mail offering pricey software upgrades thatįix current floating point errors while introducing new ones. – A properly used Slide Rule can perform pipelined and parallel – A Slide Rule and Paper Pad fit in a briefcase with space left over Paper quota with pointless GIF pictures for the root window. – You never get nasty system messages about filling up your entire – You can spill coffee on a Slide Rule you can use a Slide Rule

– A Slide Rule doesn’t care if you smoke, or hiccup. – A Slide Rule doesn’t smoke whenever the power supply hiccups. Start wailing and screaming due to a single-point failure. – One hundred people all using Slide Rules and Paper Pads do not – A Slide Rule doesn’t shut down abruptly when it gets too hot. Reasons Why a Slide Rule (and Paper Pad) is Better Than an X Workstation

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Think of all the crappy Bluetooth multimeter and sensor add ons, USB Android thermal cameras, etc, and how awesome they could be if they securely mounted to the front of a device that was cheap enough to have a few dedicated to different things, and could be left in a drawer for a year switched off, and still be ready in seconds.Ĭalculators are probably farther behind their potential than almost anything else these days. You could even use an analog thumb stick for the UI, and have it be an acceptable RC car controller. If it had a whole lot of power to it(2x 18650s or better yet the LTO18560 variant that’s good for decades), expansion modules could power robotics, solenoid valves, or whatever else, almost like Lego’s Mindstorms.

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Your calculator could be a flashlight, alarm clock, offline Wikipedia (Assuming SD card support), digital walkie talkie, home automation controller, weather station viewer(Just add LoRa/FSK radios), datalogger/multimeter/general tricorder like device/etc, TV remote, etc.Ī $50 to $100 device, if it was open and standardized and had WiFi, could fill the “Default choice of platform to control stuff” that a phone does, while also lasting months to years between charges or even being practical to use on solar power(Sharp Memory LCDs, plus no need for smartphone level OSes and connectivity).

There’s a whole class of device that’s kind of like what a phone does, but much lower power.

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I really think calculators could still be relevant in professional and everyday home use if they had more models with better connectivity, and none of the educational limitations. Posted in Retrocomputing, Teardown Tagged calculator, radio shack, vfd Post navigation

If, by chance, you want a modern calculator, they can also do plenty these days. If you don’t want vintage, an Arduino has plenty of power compared to these old machines. But, like slide rules, we have a soft spot for these handheld computers. There isn’t much need for a calculator now since your phone can easily do math ranging from a simple calculator app to symbolic math programs. Using that he was able to image the display’s cathode wire, which is normally difficult to see unaided. Pressing the square root and 4 keys at the same time will trick the chip into providing pi anyway.Īnother interesting item: modified a cheap camera and removed the IR filter from it. Apparently, the calculator IC had a provision for a pi constant key, but there was no key for that function. even has a need hack for the calculator itself, if you happen to have one.

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Not only are all the parts through-hole, but the PCB is clearly a manual layout with serpentine traces flowing across the board like some sort of art piece. Consumer electronics with big through-hole ICs! Troubleshooting the device wound up being anti-climatic, as a broken wire to the battery compartment explained the whole thing.Īs a teardown, though, this is a fun video.

It is fun to see one of these old devices opened up again. Obviously, that means it is time to open it up. pulled out an old Radio Shack vacuum fluorescent display (VFD) calculator and found it didn’t work. Today you can buy calculators at the dollar store. By the 1970s, the slide rule changed over to an electronic calculator which was a pricy item. There was a time when any electronics student would have a slide rule hanging off their belt.