hardware layer - définition. Qu'est-ce que hardware layer
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Qu'est-ce (qui) est hardware layer - définition

SET OF SOFTWARE ROUTINES THAT EMULATE PLATFORM-SPECIFIC DETAILS, GIVING PROGRAMS DIRECT ACCESS TO HARDWARE RESOURCES IN A DEVICE-INDEPENDENT, HIGH PERFORMANCE MANNER
Hardware abstraction layer; Hardware Abstraction Layer; Hardware Abstraction layer; Hardware-abstraction layer

Hardware Abstraction Layer         
<operating system> (HAL) The layer of Microsoft Windows NT where they have isolated their assembly language code. (1995-04-17)
Hardware abstraction         
Hardware abstractions are sets of routines in software that provide programs with access to hardware resources through programming interfaces. The programming interface allows all devices in a particular class C of hardware devices to be accessed through identical interfaces even though C may contain different subclasses of devices that each provide a different hardware interface.
hardware         
WIKIMEDIA DISAMBIGUATION PAGE
Hardware system; Hardware System; Hardware (disambiguation); H/W; HARDWARE; Hardwares
1.
In computer systems, hardware refers to the machines themselves as opposed to the programs which tell the machines what to do. Compare software
.
N-UNCOUNT
2.
Military hardware is the machinery and equipment that is used by the armed forces, such as tanks, aircraft, and missiles.
N-UNCOUNT: usu adj N
3.
Hardware refers to tools and equipment that are used in the home and garden, for example saucepans, screwdrivers, and lawnmowers.
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Wikipédia

Hardware abstraction

Hardware abstractions are sets of routines in software that provide programs with access to hardware resources through programming interfaces. The programming interface allows all devices in a particular class C of hardware devices to be accessed through identical interfaces even though C may contain different subclasses of devices that each provide a different hardware interface.

Hardware abstractions often allow programmers to write device-independent, high performance applications by providing standard operating system (OS) calls to hardware. The process of abstracting pieces of hardware is often done from the perspective of a CPU. Each type of CPU has a specific instruction set architecture or ISA. The ISA represents the primitive operations of the machine that are available for use by assembly programmers and compiler writers. One of the main functions of a compiler is to allow a programmer to write an algorithm in a high-level language without having to care about CPU-specific instructions. Then it is the job of the compiler to generate a CPU-specific executable. The same type of abstraction is made in operating systems, but OS APIs now represent the primitive operations of the machine, rather than an ISA. This allows a programmer to use OS-level operations (e.g. task creation/deletion) in their programs while retaining portability over a variety of different platforms.