He developed the CP/M operating system and also had a hand in the development of BIOS
Gary Kildall
The first operating system was developed in the 1950s.
The MVS operating system was the most commonly used operating system used on mainframe computers. The MVS operating system was developed by IBM and was first released in 1974.
1980
It is not known who invented the BIOS of a computer however Gary Kildall is credited with creating the term BIOS in 1975. The BIOS is the first application that loads when the computer is booted up.
ClarisWorks
The VxWorks is a real time operating system that was developed by Wind River Systems. The operating system was first released in 1987. The operating system is designed for use in embedded systems.
AnswerActually it was Gary Kildall who invented the first operating system... Patterson bought it for 5 bucks at a hackers computer store. All Patterson did was switch the A drive and the C drive and called it his own. IBM went to Kildall first but he wasn't home and his wife wouldn't sign the non-disclosure paper. Then Bill Gates called Patterson and gave him 50,000 for the operating system and all the rights to it. Kildall was killed in a bar fight in 1994 after becoming an alcoholic because he watched his life's work being taken from him. Tim Patterson and Microsoft didn't actually do anything. Tim Patterson (with a little help from Bill and Steve) created DOS. Bill Gates and Steve Ballmer worked together on the first GUI OS (Windows).
Possibly he did part of it, but by that time he had a company (Microsoft) with many programers. Gary Kildall was the first person to create an operating system for the computers which was separate from the hardware. He was a PhD in computers and he named his system CP/M. The first versions of Windows were based on a system which was invented or designed by Tim Paterson. He named his system QDOS. Microsoft, a company founded by Bill Gates and his school friend Paul Allen in 1975 improved on it. It is a myth that Bill Gates invented Windows. He only founded the company which designed a more user friendly computer operating system called 'Windows' It is said that there was an oral agreement between the IBM (one of world leading companies in computers) and Gary Kildall but G. Kildall never benefited much, monetarily, from his invention. He died in 1996 and never got the credit he deserved for his invention.
Mac OS is the first operating system developed in the year 1955
The 6 operating system is a computer operating system that was released in 1985. It was developed by Microsoft and was the first operating system to be released by the company. The 6 operating system is based on the MS-DOS operating system and was the first version of Windows to be released. The 6 operating system was succeeded by the Windows 3.1 operating system.
I believe the first was MS-DOS or Microsoft Disk Operating System.