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Foreword
Ada is the result of a collective effort to design a common language for
programming large scale and real-time systems.
The common high order language program began in 1974. The requirements of
the United States Department of Defense were formalized in a series of
documents which were extensively reviewed by the Services, industrial
organizations, universities, and foreign military departments. The Ada
language was designed in accordance with the final (1978) form of these
requirements, embodied in the Steelman specification.
The Ada design team was led by Jean D. Ichbiah and has included Bernd
Krieg-Brueckner, Brian A. Wichmann, Henry F. Ledgard, Jean-Claude Heliard,
Jean-Loup Gailly, Jean-Raymond Abrial, John G.P. Barnes, Mike Woodger,
Olivier Roubine, Paul N. Hilfinger, and Robert Firth.
At various stages of the project, several people closely associated with
the design team made major contributions. They include J.B. Goodenough,
R.F. Brender, M.W. Davis, G. Ferran, K. Lester, L. MacLaren, E. Morel, I.R.
Nassi, I.C. Pyle, S.A. Schuman, and S.C. Vestal.
Two parallel efforts that were started in the second phase of this design
had a deep influence on the language. One was the development of a formal
definition using denotational semantics, with the participation of V.
Donzeau-Gouge, G. Kahn, and B. Lang. The other was the design of a test
translator with the participation of K. Ripken, P. Boullier, P. Cadiou, J.
Holden, J.F. Hueras, R.G. Lange, and D.T. Cornhill. The entire effort
benefitted from the dedicated assistance of Lyn Churchill and Marion Myers,
and the effective technical support of B. Gravem, W.L. Heimerdinger, and
P. Cleve. H.G. Schmitz served as program manager.
Over the five years spent on this project, several intense week-long design
reviews were conducted, with the participation of P. Belmont, B. Brosgol,
P. Cohen, R. Dewar, A. Evans, G. Fisher, H. Harte, A.L. Hisgen, P. Knueven,
M. Kronental, N. Lomuto, E. Ploedereder, G. Seegmueller, V. Stenning, D.
Taffs, and also F. Belz, R. Converse, K. Correll, A.N. Habermann, J.
Sammet, S. Squires, J. Teller, P. Wegner, and P.R. Wetherall.
Several persons had a constructive influence with their comments,
criticisms and suggestions. They include P. Brinch Hansen, G. Goos, C.A.R.
Hoare, Mark Rain, W.A. Wulf, and also E. Boebert, P. Bonnard, H. Clausen,
M. Cox, G. Dismukes, R. Eachus, T. Froggatt, H. Ganzinger, C. Hewitt, S.
Kamin, R. Kotler, O. Lecarme, J.A.N. Lee, J.L. Mansion, F. Minel, T.
Phinney, J. Roehrich, V. Schneider, A. Singer, D. Slosberg, I.C. Wand, the
reviewers of Ada-Europe, AdaTech, Afcet, those of the LMSC review team, and
those of the Ada Tokyo Study Group.
These reviews and comments, the numerous evaluation reports received at the
end of the first and second phase, the nine hundred language issue reports
and test and evaluation reports received from fifteen different countries
during the third phase of the project, the thousands of comments received
during the Ansi Canvass, and the on-going work of the Ifip Working Group
2.4 on system implementation languages and that of the Purdue Europe LTPL-E
committee, all had a substantial influence on the final definition of Ada.
The Military Departments and Agencies have provided a broad base of support
including funding, extensive reviews, and countless individual
contributions by the members of the High Order Language Working Group and
other interested personnel. In particular, William A. Whitaker provided
leadership for the program during the formative stages. David A. Fisher
was responsible for the successful development and refinement of the
language requirement documents that led to the Steelman specification.
This language definition was developed by Cii Honeywell Bull and later
Alsys, and by Honeywell Systems and Research Center, under contract to the
United States Department of Defense. William E. Carlson and later Larry E.
Druffel served as the technical representatives of the United States
Government and effectively coordinated the efforts of all participants in
the Ada program.