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John Warner Backus (December 3, 1924 – March 17, 2007) was an American computer scientist. He led the team that invented and implemented FORTRAN , the first widely used high-level programming language , and was the inventor of the Backus–Naur form (BNF), a widely used notation to define syntaxes of formal languages .
FP (short for functional programming) [2] is a programming language created by John Backus to support the function-level programming [2] paradigm. It allows building programs from a set of generally useful primitives and avoiding named variables (a style also called tacit programming or "point free"). It was heavily influenced by APL developed ...
A reproduction of a FORTRAN coding form, printed on paper and intended to be used by programmers to prepare programs for punching onto cards by keypunch operators. Now obsolete. Before the development of disk files, text editors and terminals, programs were most often entered on a keypunch keyboard onto 80-column punched cards, one line to a card.
Backus–Naur form. In computer science, Backus–Naur form ( / ˌbækəs ˈnaʊər /) (BNF or Backus normal form) is a notation used to describe the syntax of programming languages or other formal languages. It was developed by John Backus and Peter Naur. BNF can be described as a metasyntax notation for context-free grammars.
Learn how to update your settings to make AOL Mail look and feel exactly how you need it. Netscape Internet Service (ISP) · Jan 30, 2024. Get answers to your AOL Mail, login, Desktop Gold, AOL app, password and subscription questions. Find the support options to contact customer care by email, chat, or phone number.
Assembly language, machine code. Influenced. Fortran, ALGOL 58, BASIC, C, PL/I, PACT I, MUMPS, Ratfor. Speedcoding, Speedcode or SpeedCo was the first high-level programming language [a] created for an IBM computer. [1] The language was developed by John W. Backus in 1953 for the IBM 701 to support computation with floating point numbers. [2]
Chomsky reduced form. Another way [4] : 92 [10] to define the Chomsky normal form is: A formal grammar is in Chomsky reduced form if all of its production rules are of the form: or. , where , and are nonterminal symbols, and is a terminal symbol. When using this definition, or may be the start symbol.
The William W. Backus Hospital is a 213-bed, not-for-profit, acute care community hospital in Norwich, Connecticut. Backus Hospital provides inpatient care for approximately 11,000 patients each year, and has more than 400,000 outpatient visits. [1] The hospital operates outpatient centers in Colchester, Montville, Ledyard, and Plainfield; and ...