Kovalick

5 ms·

1.
by Kovalick 6mo ago
Imagine using relays to emulate a Nvidia GPU. How many?
2.
by Kovalick 10mo ago
Starting with telegraph to telephones to first computer.
3.
by Kovalick 10mo ago
The relay started in telegraph, then telephone boards then first computer
4.
by Kovalick 1y ago
Alexander G Bell discovered telephony by accident. See how.
5.
Luck Favors the Prepared-- The telephone was invented by chance(calling315.com)
4 points by Kovalick 2y ago|1 comments
6.
by Kovalick 2y ago
AG Bell wanted to improve the telegraph and invented the telephone by luck.
7.
Coolest electro-mechanical telephone system(youtube.com)
2 points by Kovalick 2y ago|1 comments
8.
by Kovalick 2y ago
Check out the workings of the Number 5 Crossbar telephone exchange. It was the workhorse of switching for 40 years.
9.
by Kovalick 2y ago
Generating 90 VAC at 20 Hz was a challenge in the early days of exchanges. Check out Calling315.com for more on ringing generators https://www.calling315.com/ringing-machines
10.
by Kovalick 2y ago
Great point! I will add that to the pages on Annunciators. Thanks for the idea!
11.
by Kovalick 2y ago
I agree with you that electro-mechanical is very cool. Check out Calling315.com for a complete coverage of vintage (relay based) telephone exchanges. The site has 70 articles on switching systems from 1877 until 1970. All for fun...
12.
by Kovalick 2y ago
Jimmy, thanks for the comment-- check out Calling315.com for more on the very early days of how the T and R got started. It was JJ Carty of AT&T (1900) that decided to use Tip and Ring and not a single wire and earth ground from each ho
13.
The evolution of annunciator signaling for telephones(calling315.com)
90 points by Kovalick 2y ago|13 comments
14.
First Electromechanical Music Synthesizer(calling315.com)
3 points by Kovalick 2y ago|0 comments