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Answer:
Memory Management.
Loading and Execution.
Data security.
Disk Management.
Process Management.
The basic characteristics of operating systems are Work Management, Memory Management, Input/output control, Process Management, and Resource Management.
What is an Operating System?
Simply put, it is a computer program that helps computer operators effectively and efficiently use a computer without the need for coding or coding experience.
In summary, before the advent of operating systems, only programmers could use a computer, operating systems made it possible for everyone/anyone to use a computer.
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