SCL 3 (Question 1)

1.        List down all the operating system use in a desktop/laptop today and find good descriptions of how operating system work? Hence,state that advantages and disadvantages.

Operating System	Description	Advantages	Disadvantages
Microsoft Windows	A friendly operating system	-Works with most kind of software and hardware.	-Easily to catch on virus and trojan
Mac OS	High quality software	-Not easily affected by the virus.	-Software on Mac OS is not so complete.
UNIX and Linux	The simplest term of an operating system.	-It is free and easy to use. -More stable and does not go down as often as windows does, therefore it require less administration and maintainence.	-It has no standard edition,which makes it difficult for beginners to use the system.
DOS	The first operating system used by IBM-Compatible computers.	-DOS is very lightweight and is allows direct access to most hardware. -DOS will run on a much smaller system. (Entire OS can be placed on a single modern ROM chip.)	-It’s a single user OS (One user can work at one time) -It’s a single tasking (One application can run at a time) -It does not support Graphics.
Handheld operating system	An operating system that can run various types of application software known as apps.	-Portable -Smaller than typical laptop. -Can replace nootbooks.	-Smaller keyboard, thus it is hard to type. -Too small, thus it makes it easily to be stolen.

By : Muhamed Danish
Luqman