Mastodawn

Because I'm super geeky like that, I've started using a circular #SlideRule when I score #baseball games -- I set the ballpark capacity on the D scale, the attendance on the C scale, and look under the 1 on the D to read the percentage of capacity on C. Accurate enough for my scoresheets.

Just went back and filled that percentage to all the college and #WorldBaseballClassic games I've scored this year.

Hackaday 3d ago

The Zero-Power Flight Computer

https://fed.brid.gy/r/https://hackaday.com/2026/03/23/the-zero-power-flight-computer/

13 3d ago

The Zero-Power Flight Computer https://hackaday.com/2026/03/23/the-zero-power-flight-computer/
#History #Retrocomputing #E6b #Flightcomputer #Navigation #Sliderule

The Zero-Power Flight Computer

In the early days of aviation, pilots or their navigators used a plethora of tools to solve common navigation and piloting problems. There was definitely a need for some kind of computing aid that …

Hackaday

cyberpunkrocker 3d ago

How many of you still have one of these? Or even know how to use one?

#rule #sliderule #analogcomputer

Hackaday Feb 18

Sliderule Simulator Teaches You How To Do Calculations The Old Fashioned Way

https://fed.brid.gy/r/https://hackaday.com/2026/02/18/sliderule-simulator-teaches-you-how-to-do-calculations-the-old-fashioned-way/

13 Feb 18

Sliderule Simulator Teaches You How To Do Calculations The Old Fashioned Way https://hackaday.com/2026/02/18/sliderule-simulator-teaches-you-how-to-do-calculations-the-old-fashioned-way/
#Classichacks #SoftwareHacks #Browserbasedtool #Javascript #Simulator #Sliderule

Sliderule Simulator Teaches You How To Do Calculations The Old Fashioned Way

Ever wanted to know how engineers made their calculations before digital calculators were on every workbench? [Richard Carpenter] and [Robert Wolf] have just the thing—a sliderule simulator that ca…

Hackaday

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Droppie [opensoc]Jan 30

@bitzero i went to uni in the late 70s to early 80s, & i was in the opposing camp... i chose to swap my hitherto #sliderule for a TI-59, with its dinky little magnetic cards & internal motor, + #RPN also, ofc. several of my friends also bought the same one, though one went for the TI-58. other friends did go the HP route, specifically the HP-41C iirc. fun times.

cyberjunkie Jan 16

Dad showed me his slide rule today. This thing is probably 50-60 years old. It's German, a brand called Aristo-Elektro.

I'm in love with the fonts and colours. Few things are as classy lately.

#sliderule

N-gated Hacker News Jan 15

🎉 Because who doesn't want to feel like a 1950s scientist while cooking lasagna? 🤓 Apparently, the pinnacle of culinary innovation is ditching your calculator for a kitchen slide rule! 🔢 Because, you know, math is more fun when it's unnecessarily complicated. 👩‍🔬 Bon appétit, nerds! 🍽️
https://entropicthoughts.com/kitchen-slide-rule #1950sCooking #KitchenInnovation #CulinaryMath #SlideRule #NerdyCuisine #HackerNews #ngated

You Need A Kitchen Slide Rule

EngineerSailing Jan 12

81 year old sailor on next boat started talking slide rulers
So I pulled mine and and we raced calculations

#math #sliderule #sliderules #calculation #oldschool