biology

Jean Ichbiah

Jean Ichbiah is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Jean Ichbiah rather than just read about it. In short: Jean David Ichbiah (25 March 1940 – 26 January 2007) was a French and American computer scientist. From 1977 to 1983, he was the chief designer of Ada, a general-purpose, strongly typed programming language with certified validated compilers.

Key takeaways

Jean Ichbiah belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Jean Ichbiah to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Jean Ichbiah from memory before moving on to harder problems.

Reference excerpt

Jean David Ichbiah (25 March 1940 – 26 January 2007) was a French and American computer scientist. From 1977 to 1983, he was the chief designer of Ada, a general-purpose, strongly typed programming language with certified validated compilers.

Early life Ichbiah was a descendant of Greek and Turkish Jews from Thessaloniki who emigrated to France.

Career In 1980, Ichbiah founded the software development company Alsys, created to support initial work on the Ada programming language. In July 1995, Alsys merged to become Thomson Software Products (TSP), which itself would subsequently merge into Aonix in 1996. From 1972 to 1974, Ichbiah worked on designing an experimental system implementation language called LIS, based on Pascal and Simula. He had been chairman of the Simula User's Group and was one of the founding members of IFIP WG 2.4 on Systems Implementation Languages. Ichbiah then joined CII Honeywell Bull (CII-HB) in Louveciennes, France, becoming a member of the Programming Research division. Among other projects, he worked on the rewrite of the Siris 7 operating system into Siris 8 ,Mainframe computer CII Iris 80 developed by the French company CII. Ichbiah's team submitted a language design labelled "Green" to a competition to choose the United States Department of Defense's embedded programming language. When Green was selected in 1978, he continued as chief designer of the language, now named "Ada". In 1980, Ichbiah left CII-HB and founded the Alsys corporation in La Celle-Saint-Cloud, which continued language definition to standardize Ada 83, and later went into the Ada compiler business, also supplying special validated compiler systems to NASA, the US Army, and others. He later moved to the Waltham, Massachusetts subsidiary of Alsys. In the 1990s, Ichbiah designed the keyboard layout FITALY, which is specifically optimized for stylus or touch-based input. Subsequently, he started the Textware Solutions company, which sells text entry software for PDAs and tablet PCs, as well as text-entry software for medical transcription on PCs.

Member French Academy of Sciences(1979)

Awards and honors In 1979, Jean Ichbiah was designated a chevalier (knight) of the French Legion of Honour and a correspondent of the French Academy of Sciences. He received a Certificate of Distinguished Service from the United States Department of Defense for his work on Ada.

Death Jean Ichbiah died from complications of a brain tumor on January 26, 2007.

References

Further reading Jean Ichbiah (October 1984). "Ada: Past, Present, Future — An Interview with Jean Ichbiah, the Principal Designer of Ada". Communications of the ACM. 27 (10): 990–997. doi:10.1145/358274.358278. S2CID 11152781.

External links Jean Ichbiah (1940-2007), press release by the Ada Resource Association "Programming pioneer dies — A tribute to Ada's Jean Ichbiah", by Phil Manchester (2007-02-02) Obituary by Bertrand Meyer, as published in SIGSOFT Software Engineering Notes Jean Ichbiah, 66; designed landmark computer language (Boston Globe) Ada inventor Jean Ichbiah dies (Computerworld) Member of the French Academy of Sciences (in French) Ada 83 designer Jean Ichbiah dies, Ada User's Journal, Ada-Europe 2007

Illustrations

Worked examples

Example 1 — a first encounter with Jean Ichbiah

Start with the simplest possible case. Write down what Jean Ichbiah claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Jean Ichbiah before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Jean Ichbiah ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Jean Ichbiah

In research: Jean Ichbiah appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Jean Ichbiah in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Jean Ichbiah is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1940 births, 2007 deaths, 20th-century French Sephardi Jews, so understanding it makes those chapters shorter.
In everyday life: Look for Jean Ichbiah outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Jean Ichbiah in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Jean Ichbiah means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Jean Ichbiah out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Jean Ichbiah in simple terms?

Why does Jean Ichbiah matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Jean Ichbiah?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Jean Ichbiah.