3:1 Scale CURTA Replica

Since I was a child, I’ve always loved mechanical devices of all shapes and sizes. I remember my grandmother’s cottage had one of those old totalizer “calculators” that you&…

Tindie Blog

@thomasweibel Interessant, dass Du die #Curta erwähnst. Ich besitze derer auch zwei in meinem privaten #Museum. Leider ist bei meiner kleinen vom Typ I der dünne Ring des Löschhebels abgebrochen. Sie ist aber bedienbar. Sonst sind die beiden tiptop in Schuss.

#Rechenmaschinen #Taschenrechner #Feinmechanik #Mathematik #Geschichte #Schweiz #Liechtenstein #Nationalmuseum

«Ein dauerhafter, schnell rechnender Mitarbeiter für alle vier Rechnungsarten in der Rocktasche» versprach die Verkaufsbroschüre: Der kleinste mechanische #Taschenrechner aller Zeiten hiess #Curta und war made in Liechtenstein.

https://blog.nationalmuseum.ch/2021/12/der-taschenrechner-namens-curta/

#geschichte #schweiz #liechtenstein #nationalmuseum
#mathematik

@hakona @NanoRaptor it's a mechanical calculator with a very special history. Built for about 20 years after the war when digital calculators took over.

https://en.m.wikipedia.org/wiki/Curta

#curta

Curta - Wikipedia

Curt Herzstark erfindet im Zweiten Weltkrieg den ersten Taschenrechner, der wirklich in eine Tasche passt. Die Pläne dazu muss er als Häftling im Konzentrationslager zeichnen.

#Buchenwald #CURTA #Erfindung #Herzstark #KZ #Taschenrechner #GeschichtenAusDerMathematik

https://detektor.fm/wissen/geschichten-aus-der-mathematik-curt-herzstark?utm_campaign=share_on_mastodon&utm_medium=mastodon&utm_source=fediverse

Curt Herzstark und der erste echte Taschenrechner

Als Häftling im KZ Buchenwald erfindet Curt Herzstark den ersten Taschenrechner, der wirklich in eine Tasche passt.

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#retrocomputing #Curta I had one of these and it would be worth ~£1000 these days!

It works by repeated addition or subtraction.

Ring at the top clears the result displayed upward at the top.

To divide 17 by 5, set register slider 1 to 7 and slider 2 to 1. Lift the crank handle to subtract (instead of adding). Turn the handle until the result is close to zero. If you go too far, push the crank down to add, and turn it once.

17/5 is 3 reminder 2, so you should have 3 on the counter, and the remainder 2 is on the main result displayed.

Bigger sums are done by rotating the top ring, so operations happen multiplied by 10, 100, 1000 etc.

Easy. I had one at my first big tech job in 1988, and nobody asked to "borrow a calculator" from me twice :-)

Some years ago I did an animated short film for school. I called it "Unreality" and it was about derealization.
It was so much work! But I was pretty proud of it, still am, even though it wasn't perfect and needed a lot more of work!
Gonna show you the poster and some frames 😊
#shortfilm #frames #frame #framebyframe #derealization #anxiety #mentalhealth #fantasy #curta #animation #2d
Curta - Wikipedia