Mostly operating systems are developed by assembly languages and C. Windows operationg system is developed by Visual C++
An operating system is mostly developed in C. C++ is less common, but used by several OS developers. There also is some operatingsystems developed in Pascal and Ruby. The last (ruby) used an interpreter in C. To load the operating system, you need a bootloader. Which is at least partially written in assembler.
Operating system development as a hobby has a large cult-like following. As such, operating systems, such as Linux, have derived from hobby operating system projects. The design and implementation of an operating system requires skill and determination, and the term can cover anything from a basic "Hello World" boot loader to a fully featured kernel. One example of this is the Minix Operating System-an OS that was designed by A.S. Tanenbaum as a teaching tool but was heavily used by hobbyists before Linux eclipsed it in popularity.
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http://wiki.answers.com/Q/How_do_you_design_grid_operating_system"
An open-source operating system is one that is available to the general public for use and/or modification from its original design free of charge.
it was the only programming language that was designed by a woman
This is a fairly complex answer, but it basically boils down to a few oversimplified steps. First, design a language, or find the specifications for a language you would like to use. Second, design a lexical parser that can interpret the "tokens" that you designed in your language. Third, design a compiler/linker that will assemble the tokens into binary code, and link them with the appropriate libraries. Your exact steps will vary depending on the operating system you are using, the compiler you have available, etc.
factors of operating system design
UML stands for Unified Modeling Language. It is a modelling language in software, designed to provide a standard way to visualize the design of a system.
The C language was created for a specific purpose: to design the UNIX operating system (which is used on many computers).
Design is a verb. Designed is the past tense.
The modern design of the thing designed
designed
had designed
both Design is an action, and the thing that gets designed is called a design.
The past tense of "design" is spelled "designed".
he designed the LBD