Private company
Concentric Data Systems
American software company1
Concentric Data Systems, Inc. was founded in December 1979 by John J. Henderson and Jonathan Sachs, both having left their jobs as system programmers at Data General Corporation. Originally, the company undertook a variety of software consulting projects for the Data General line of computers. In 1981, the company developed a spreadsheet product, CompuCalc, that ran on Data General hardware and was modeled after VisiCalc.2 Wikipedia text CC BY-SA 4.0
Last updated Oct 21, 2026.
Overview
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Concentric Data Systems, Inc. was founded in December 1979 by John J. Henderson and Jonathan Sachs, both having left their jobs as system programmers at Data General Corporation. Originally, the company undertook a variety of software consulting projects for the Data General line of computers. In 1981, the company developed a spreadsheet product, CompuCalc, that ran on Data General hardware and was modeled after VisiCalc.2
Timeline
- 1979Founded Founded1
Links
- WikipediaConcentric Data Systems
- WikidataQ5158339
Sources
The numbers on this page point here. Each one links to the record it came from.
- 1
- 2WikipediaConcentric Data Systems on Wikipedia