[amp_mcq option1=”MS-DOS” option2=”PC-DOS” option3=”Unix” option4=”All of the above E. None of the above” correct=”option4″]
The correct answer is: D. All of the above
MS-DOS, PC-DOS, and Unix are all types of systems software used on microcomputers.
- MS-DOS is a disk operating system developed and marketed by Microsoft for personal computers. MS-DOS was the dominant operating system for personal computers during the 1980s and early 1990s. It was eventually replaced by Windows, but it is still used today in some embedded systems.
- PC-DOS is a disk operating system developed and marketed by IBM for its IBM PC and compatible computers. PC-DOS is based on MS-DOS, but it includes some additional features and customizations for IBM computers.
- Unix is a multitasking, multiuser computer operating system that exists in many variants. The original Unix was developed at AT&T’s Bell Labs research center by Ken Thompson, Dennis Ritchie, and others. Unix has been ported to many different hardware platforms and is widely used in academia, business, and government.
Systems software is a type of computer program that is designed to control the operation of a computer system. It includes the operating system, device drivers, and other programs that are essential for the computer to function.