Multitasking

In computing, multitasking is ability of computer to run multiple tasks in the same time.

Multitasking is a common feature of computer operating systems since at least the 1960s. It allows more efficient use of the computer hardware. The operating system very quickly swaps the processes running on the processor (so-called context switching using the scheduler ), so that the computer user has the impression that they are running simultaneously.

Advantages

Supports Multiple Users

This type of OS is designed to support multiple users at the same time. It can run multiple applications smoothly without slowing down the system.

Efficient Virtual Memory

Multitasking operating systems have an efficient virtual memory system. There's no need for any program to wait for a long time to perform its tasks thanks to virtual memory. If any such issue arises, those applications are shifted to virtual memory.

High Reliability

Multitasking operating systems provide multiple users with more flexibility, leading to increased user satisfaction. In addition, each user can run one or more applications simultaneously.

Secure Memory

Memory management is well-defined in multitasking operating systems. As a result, the operating system does not allow any unwanted applications to waste RAM.

Time Sharing

To prevent waiting for the CPU, each task is allocated a specific time slot.

Efficient Background Processing

Background processes run more efficiently under a multitasking operating system. Most users are unaware of these background processes, but they assist in the smooth operation of other programs such as antivirus software, firewalls, and more.

Optimized Computer Resources

A multitasking OS can manage I/O devices, RAM, hard disks, CPUs, and other computer resources effectively.

Multiple Program Execution

Users can run multiple programs at the same time, such as games, an internet browser, Microsoft PowerPoint, Excel, and other utilities.

Disadvantages

Processor Limitations

The system may run applications slowly due to the limited speed of its processors, and their response time may increase when processing multiple programs. More computational power is required to overcome this challenge.

Memory Limitations

The performance of the computer may be affected when several programs run simultaneously, as the main memory can become overcrowded when multiple programs are loaded. The response time increases as the CPU is unable to allocate distinct times for each program. The primary cause of this issue is the use of low-capacity RAM. As a result, the capacity of the RAM can be increased to meet the requirements.

CPU Overheating

In a multitasking environment, multiple processors are busy at the same time to complete any task; therefore, the CPU generates more heat.

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