Is a priority based, preemptive multitasking, real time operating system designed and optimized for high performance DSP and media centric microprocessors. It is one of the world smallest, most highly optimized rtos. It speed up the product development with these innovative features:
Started as an improvement on a primitive ROM chip with a 4K kernel sold by a ready systems, now a mentor graphics product.
It is designed for use in embedded systems. Unlike self-hosting system such as Unix, Vxworks development is done on a host machining running Linux, Unix or Windows cross compiling target software to run on various, CPU architecture.
PILOT -was a single user, multitasking os designed by Xerox parc in early 1977. It is written in Mesa programming languages, totaling about 24,000 lines of codes.
It designed as a single user system in a highly networked environment of other pilot systems, with interfaces designed for inter-process, communication (IPC) across the network via the pilot stream interface.
LISP-BASED OPERATING SYSTEM LISP MACHINE OS -were general purpose computer designed( usually use hardware) to efficiently run.
Lisp is the main software languages.
They were the first commercial single core workstation.
It commercially pioneered many now common place technologies, including effective garbage collection, laser printing, windowing system, computer mice, high resolution bit mapped graphics rendering and networking innovation.