What is multitasking? tccicomputercoaching.com

Multitasking

Multitasking is a process of executing multiple tasks simultaneously. We use multitasking to utilize the CPU. Multitasking can be achieved by two ways:

• Process-based Multitasking(Multiprocessing)
• Thread-based Multitasking(Multithreading)

1) Process-based Multitasking (Multiprocessing)

• Each process has its own address in memory i.e. each process allocates separate memory area.
• Process is heavyweight.
• Cost of communication between the processes is high.
• Switching from one process to another require some time for saving and loading registers, memory maps, updating lists etc.

2) Thread-based Multitasking (Multithreading)

• Threads share the same address space.
• Thread is lightweight.
• Cost of communication between the thread is low.

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