The amount of complexity by which a system is viewed or programmed. The higher the level, the less detail. The lower the level, the more detail. The highest level of abstraction is the entire system.

An interface between hardware and software. A hardware abstraction layer (HAL) is generally used as a common driver for peripheral devices. The application calls the operating system; the OS calls the ...

This is a preview. Log in through your library . Abstract I present a general theory of abstraction operators which treats them as variable-binding termforming operators, and provides a reasonably ...