Complete definition. All parts of the language shall be fully and unambiguously defined.The language shall not be bound to any hardware or OS details. All features should be easy to understand. Easy to implement the language specification.Semantic structure should be consistent and minimize the number of concepts. Inefficient constructs should be easily identifiable. Code should be readable and programming decisions explicit. The language should aid the design and development of reliable programs. A general, flexible design that adapts to satisfy the needs of embedded computer applications.

Ariane 5ES: Ada Inside (photo DLR_de CC-BY-SA 2.0)Ĭrucial in the Steelman requirements were: The result was the so-called ‘ Steelman requirements‘. To pick the new programming language, the DoD chartered the High Order Language Working Group (HOLWG), a group of military and academic experts, to draw up a list of requirements and pick candidate languages. Ada code controls rockets like the Ariane 4 and 5, many satellites, and countless other systems where small glitches can have major consequences.Īda might also be the right choice for your next embedded project. Today, software written in Ada forms the backbone of not only military hardware, but also commercial projects like avionics and air-traffic control systems. With the 1995 revision, the language also targeted general purpose systems and added support for object-oriented programming (OOP) while not losing sight of the core values of reliability, maintainability and efficiency. Instead, Ada was designed to be be a single language, capable of running on all of those embedded systems, that offered the same or better level of performance and reliability. The Ada programming language was born in the mid-1970s, when the US Department of Defense (DoD) and the UK’s Ministry Of Defence sought to replace the hundreds of specialized programming languages used for the embedded computer systems that increasingly made up essential parts of military projects.

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