Interdata

Interdata
Name	Interdata
Type	Private
Founded	1966
Fate	Acquired by Perkin-Elmer (1973) / spun off to Concurrent Computer Corporation (1985)
Headquarters	Oceanport, New Jersey
Key people	Daniel S. Burrows; Gordon Bell; Ken Olsen; H. Ross Perot
Industry	Computer hardware
Products	16-bit computers; 32-bit minicomputers; peripherals

Interdata Interdata was an American minicomputer manufacturer active chiefly in the late 1960s and 1970s that produced 16-bit and 32-bit programmable systems used in scientific, industrial, and commercial applications. The company supplied hardware and software to organizations in sectors represented by institutions such as NASA, Bell Labs, and Argonne National Laboratory, competing with firms like Digital Equipment Corporation, Hamilton Standard, and Data General. Interdata systems were notable for influencing subsequent real-time and multiprocessing designs adopted by companies including Perkin-Elmer and Concurrent Computer Corporation.

History

Interdata was founded in 1966 in Oceanport, New Jersey, during a period marked by rapid growth in the minicomputer market dominated by companies such as Digital Equipment Corporation and Honeywell. Early sales targeted scientific laboratories and industrial automation projects, with contracts that put Interdata machines alongside installations from IBM and Burroughs Corporation. In 1973 Interdata became part of Perkin-Elmer, integrating into a corporate portfolio that included laboratory instrumentation and imaging products associated with Perkin-Elmer's expansion. In the early 1980s changing market pressures from microprocessor-based systems and competitors like Data General led to restructuring; parts of Interdata's business and technologies contributed to the formation of Concurrent Computer Corporation.

Products and Models

Interdata produced families of minicomputers characterized by their word sizes and real-time capabilities. The Interdata 16-bit lineup included models that competed with the PDP-11 series from Digital Equipment Corporation and the 16-bit offerings of Data General; these were used in installations involving organizations such as NASA and Oak Ridge National Laboratory. The 32-bit Interdata 7/32 and 8/32 models provided an architecture contemporary with early 32-bit designs from firms like CDC and Honeywell and found use in scientific computing centers alongside systems from Cray Research. Peripheral product choices mirrored those of peers such as DEC, with options for magnetic tape driven by standards adopted by NCR and disk controllers interoperable with storage technologies from Control Data Corporation.

Architecture and Technical Innovations

Interdata architectures emphasized microprogramming, memory protection, and modular I/O subsystems, placing them in conversation with work from Bell Labs and design approaches evident in IBM's System/3x and Burroughs' designs. The company implemented synchronous buses and real-time interrupt subsystems comparable to designs used by Hewlett-Packard and Fujitsu in instrumentation contexts. Interdata CPU designs supported hardware for multiprocessing and memory-mapped I/O that influenced later real-time multiprocessing systems developed by Concurrent Computer Corporation and modular architectures seen in Perkin-Elmer laboratory platforms. Their implementation of floating-point units and instruction sets drew on standards comparable to those in use at Argonne National Laboratory and research centers like Lawrence Livermore National Laboratory.

Operating Systems and Software

Interdata systems ran a range of operating systems developed in-house and by third parties, including real-time kernels and batch-oriented systems used similarly to UNIX in academic and industrial settings. Interdata variants interfaced with software ecosystems present at institutions such as MIT, Stanford University, and Carnegie Mellon University for scientific applications and languages like FORTRAN, COBOL, and assembly-language toolchains. Third-party vendors provided database and control software analogous to offerings from Applied Data Research and Software Arts, while bespoke control applications tied Interdata machines to manufacturing control programs used by companies such as General Electric.

Commercial Impact and Market Position

Interdata occupied a niche between the laboratory-centric market players like DEC and large-system vendors like IBM, securing contracts with federal laboratories and aerospace contractors including Grumman and Lockheed. The acquisition by Perkin-Elmer reflected the strategic value of Interdata technology for instrumentation and imaging product lines linked to customers such as Kodak and academic research institutions. Market pressures from firms like Data General, the rise of microprocessor-based systems from companies such as Intel, and shifting procurement at agencies including DARPA altered demand, contributing to corporate reorganizations and eventual technology transfers to successors like Concurrent Computer Corporation.

Legacy and Influence

Interdata's design approaches to 32-bit minicomputers, real-time multiprocessing, and modular I/O influenced later generations of embedded and real-time systems developed by companies including Perkin-Elmer, Concurrent Computer Corporation, and Sun Microsystems. Academic and government installations that used Interdata systems contributed to research outputs affiliated with institutions such as NASA, Argonne National Laboratory, and Lawrence Berkeley National Laboratory, linking Interdata hardware to scientific archives and publications. Engineers who worked on Interdata projects later joined or collaborated with designers at DEC, Intel, and Hewlett-Packard, propagating architectural ideas into workstation and server designs of the 1980s and 1990s.

Preservation and Collections

Several Interdata machines and documentation sets survive in computing history collections and museums, appearing in exhibits alongside hardware from Digital Equipment Corporation, IBM, and Cray Research. Notable repositories include university archives at Stanford University and Massachusetts Institute of Technology, museum holdings at the Computer History Museum and various national laboratory collections such as those of Oak Ridge National Laboratory. Preservation efforts by collectors and institutions focus on hardware restoration, maintenance of original software, and oral histories with former Interdata engineers who later worked at organizations like Perkin-Elmer and Concurrent Computer Corporation.

Category:Defunct computer companies of the United States