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Modula-2
Modula-2 is a structured, procedural programming language developed between 1977 and 1985/8 by Niklaus Wirth at ETH Zurich. It was created as the language for the operating system and application software of the Lilith personal workstation. It was later used for programming outside the context of the Lilith. Wirth viewed Modula-2 as a successor to his earlier programming languages Pascal and Modula. The main concepts are: # The module as a compiling unit for separate compiling # The coroutine as the basic building block for concurrent processes # Types and procedures that allow access to machine-specific data The language design was influenced by the Mesa language and the Xerox Alto, both from Xerox PARC, that Wirth saw during his 1976 sabbatical year there. Page 4. The computer magazine ''Byte'' devoted the August 1984 issue to the language and its surrounding environment. Wirth created the Oberon series of languages as the successor to Modula-2, while others (particularl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Modula-2+
Modula-2+ is a programming language descended from the Modula-2 language. It was developed at DEC Systems Research Center (SRC) and Acorn Computers Ltd Research Centre in Palo Alto, California. Modula-2+ is Modula-2 with exceptions and threads. The group which developed the language was led by P. Rovner in 1984. Main differences with Modula-2: * Concurrency; different than the concept of coroutine Coroutines are computer program components that allow execution to be suspended and resumed, generalizing subroutines for cooperative multitasking. Coroutines are well-suited for implementing familiar program components such as cooperative task ..., which was already part of Modula-2 *Exception handling *Garbage collection (computer science), Garbage collection Implementations Modula-2+ was used to develop Topaz, an operating system for the SRC DEC Firefly shared memory asymmetric multiprocessing workstation. Most Topaz applications were written in Modula-2+, which grew along wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |