Where Have all the Slide Rules Gone and Should Engineers Care? #Calculators #History
Design News has a slide deck discussing slide rules, mechanical calculating devices used prior to electronic calculators being ubiquitous.
The above picture shows a 1930s high school class making electrical calculations on their slide rules. Note the demonstration-sized rule hanging on the blackboard, taken from Keuffel & Esser Co., Drawing Instruments and Materials for High Schools, Preparatory Schools, and Manual Training Schools.
The slide rule sometimes called a slipstick in the U.S., is a mechanical analog computer. As graphical analog calculators, slide rules are closely related to nomograms, but the former is used for general calculations, whereas the latter is used for application-specific computations.
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.
Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !
I was thinking about slide rules. They don’t require batteries and won’t break like a calculator might. They operate when the power goes out. There is probably more theory and wisdom contained in slide rules because someone with just a calculator doesn’t always know how to operate on a math problem. Slide rules come with the algorithm and pre-programmed..I’m missing a lot of wisdom and an era. There is probably more visual teaching in a slide rule than just letting a calculator handle the problem.
A.W Faber, later Faber-Castell, was a German manufacturer of slide rules, starting in 1892, that began as A.W. Faber pencil factory as early as 1761. They are celebrating their 250th anniversary as of 2011. Slide rules started out as boxwood, with celluloid facings added in 1897.