Concentric Data Systems - AbsoluteAstronomy.com

Concentric Data Systems, Inc. was founded in December 1979 by John J. Henderson and Jonathan M. Sachs

Jonathan Sachs

Jonathan Sachs was the programmer who co-founded Lotus Development Corporation with Mitch Kapor in 1982 and created the first version of the Lotus 1-2-3 spreadsheet program...

, both having left their jobs as system programmers at Data General Corporation

Data General

Data General was one of the first minicomputer firms from the late 1960s. Three of the four founders were former employees of Digital Equipment Corporation. Their first product, the Data General Nova, was a 16-bit minicomputer...

. 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

VisiCalc

VisiCalc was the first spreadsheet program available for personal computers. It is often considered the application that turned the microcomputer from a hobby for computer enthusiasts into a serious business tool...

.

In 1982, Sachs left and joined Mitch Kapor

Mitch Kapor

Mitchell David Kapor is the founder of Lotus Development Corporation and the designer of Lotus 1-2-3. He is also a co-founder of the Electronic Frontier Foundation and was the first chair of the Mozilla Foundation...

to found Lotus Development Corporation

Lotus Software

Lotus Software is a software company with headquarters in Westford, Massachusetts...

.

Concentric transitioned to a product development company, producing a series of software products for the IBM PC

IBM PC

The IBM Personal Computer, commonly known as the IBM PC, is the original version and progenitor of the IBM PC compatible hardware platform. It is IBM model number 5150, and was introduced on August 12, 1981...

. The products were a file manager, C.I.P, followed by a report writer for Lotus, 1-2-3 Report Writer, followed by a series of report writers marketed under the name R&R. The R&R products worked with DBase

DBASE

dBase II was the first widely used database management system for microcomputers. It was originally published by Ashton-Tate for CP/M, and later on ported to the Apple II and IBM PC under DOS...

, FoxBase, FoxPro

FoxPro

' has two meanings:*Visual FoxPro, an object-oriented programming language and RDBMS, published by Microsoft, for Microsoft Windows*FoxPro 2, a text-based procedural programming language and DBMS, originally published by Fox Software and later by Microsoft, for MS-DOS, Microsoft Windows, Macintosh,...

, and various SQL

SQL

SQL is a programming language designed for managing data in relational database management systems ....

database products.

In 1995, Concentric Data Systems was acquired by Wall Data Corporation of Kirkland, WA.

In 1999, Liveware Publishing, Inc. acquired the copyrights and intellectual property of the entire R&R and Arpeggio product line from Wall Data Corporation. R&R has been continuously updated and sold through the present.

External links

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