33
/
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
August 1, 2025
3405369
307246
2
Public Timelines
Menu
Public Timelines
FAQ
Public Timelines
FAQ
For education
For educational institutions
For teachers
For students
Cabinet
For educational institutions
For teachers
For students
Open cabinet
Create
Close
Create a timeline
Public timelines
Library
FAQ
jan 1, 1940 - The Complex Number Calculator (CNC) is completed
Description:
Bell Telephone Laboratories completes this calculator, designed by scientist George Stibitz.
Added to timeline:
TIC time line
By
MIKEL PALACIOS ALVAREZ
11 Oct 2019
1
0
353
Date:
jan 1, 1940
Now
~ 85 years ago
Images:
About & Feedback
Terms
Privacy
Library
FAQ
Support 24/7
Cabinet
Get premium
Donate
The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.
Secured with SSL