Multithreading

Multitasking involves running several tasks at the same time. It normally involves each task running on a process for a given amount of time, before it is released and another process is given some time. There are two forms of multitasking, these are: Pre-emptive multitasking. This type involves the operating system controlling how long a process stays on the processor. This allows for smooth multitasking and is used in Windows NT/95 32-bit programs.Co-operative multitasking. This type of multitasking relies on a process giving up the processor. It is used with Windows 3.1 programs and suffers from processor hogging, where a process can stay on a processor and the operating system cannot kick it off.