Apple Pascal

Apple Pascal was a language and operating system based on the UCSD Pascal system. Apple Pascal refers to an operating system for the Apple II family of computers released in August 1979 between the Apple DOS 3.2 and 3.3 versions. The system was included as part of a software/hardware package adding support for the Pascal language to the Apple II. It added a number of features that would later be incorporated into the 3.3 version, as well as others that would not be seen again until the introduction of ProDOS.