Operating System Overview
Question 1: What is an operating system?
Question 2: What is an operating system for?
1. What is an operating system?
Wikipedia says: An
operating system (English: operating system, abbreviation: OS) is a computer program that manages computer hardware and software resources, and is also the kernel and cornerstone of a computer system. The operating system needs to handle basic tasks such as managing and configuring memory, prioritizing the supply and demand of system resources, controlling input and output devices, operating the network, and managing the file system. The operating system also provides an interface for the user to interact with the system.
Second, what is the operating system?
The operating system is located between the underlying hardware and the user, and is the bridge between the two. The user can enter commands through the user interface of the operating system. The operating system interprets commands, drives hardware devices, and implements user requirements. By modern standards, a standard PC operating system should provide the following functions:
- Processing management
- Memory management
- File system
- Networking
- Security mechanism (Security)
- User interface
- Driver (Device drivers)