Author Topic: Relay-Based Floating Point Square Root Calculator  (Read 1273 times)

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Offline AlbertLTopic starter

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Relay-Based Floating Point Square Root Calculator
« on: August 15, 2021, 02:37:01 pm »
Amazing project with a telephone dial for input, Nixie tubes for output and a motor-driven two-phase "clock"!


 
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Offline rstofer

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Re: Relay-Based Floating Point Square Root Calculator
« Reply #1 on: August 15, 2021, 03:09:29 pm »
Thanks for posting this, it's great!
 

Online TimFox

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Re: Relay-Based Floating Point Square Root Calculator
« Reply #2 on: August 15, 2021, 03:42:07 pm »
I remember using an electro-mechanical calculator (Friden?) sometime before 1970 that could extract square roots:  it was fun to watch, as the carriage shifted back and forth and the numbers moved behind their windows.
 

Offline EPAIII

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Re: Relay-Based Floating Point Square Root Calculator
« Reply #3 on: August 19, 2021, 08:33:56 am »
Great 1950s technology. Hollywood would love to have it.

..... und watchen der blinken lights!
Paul A.  -   SE Texas
And if you look REAL close at an analog signal,
You will find that it has discrete steps.
 

Offline AlbertLTopic starter

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Re: Relay-Based Floating Point Square Root Calculator
« Reply #4 on: August 20, 2021, 03:05:11 pm »
For those who want to experiment with relay computing but don't want to spend the time and money to actually assemble a project, I'm thinking a programmable logic controller would be an alternative that could faithfully simulate physical relays.  There are some very capable but inexpensive PLCs on the market, like the Click line from Automation Direct   
 


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