Model K (calculator)

The Model K was an early relay binary adder[1] built in 1937 by George Stibitz, a scientist at Bell Laboratories.[2][3][4] The "K" in "Model K" can from "kitchen table", upon which is he assembled it.

References

"Stibitz Model K Adder | 102627225 | Computer History Museum". www.computerhistory.org. Retrieved August 31, 2018.
"George Robert Stibitz's Complex Number Calculator". Archived from the original on July 4, 2008. Retrieved September 29, 2017.
""Model K" Adder (replica) - CHM Revolution". www.computerhistory.org. Retrieved August 31, 2018.
Irvine, M. M. (July 2001). pdf. "Early digital computers at Bell Telephone Laboratories". IEEE Annals of the History of Computing. 23 (3): 22–42. doi:10.1109/85.948904. ISSN 1058-6180. {{cite journal}}: External link in |others= (help)

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[1] "Stibitz Model K Adder | 102627225 | Computer History Museum". www.computerhistory.org. Retrieved August 31, 2018.

[2] "George Robert Stibitz's Complex Number Calculator". Archived from the original on July 4, 2008. Retrieved September 29, 2017.

[3] ""Model K" Adder (replica) - CHM Revolution". www.computerhistory.org. Retrieved August 31, 2018.

[4] Irvine, M. M. (July 2001). pdf. "Early digital computers at Bell Telephone Laboratories". IEEE Annals of the History of Computing. 23 (3): 22–42. doi:10.1109/85.948904. ISSN 1058-6180. {{cite journal}}: External link in |others= (help)