Lab 0 understanding and familiarity with the operating system

I. Purpose and Requirements

1. Purpose of the experiment

(1) Master the definition and concept of the operating system;

(2) Understand the development history of various types of operating systems;

2 . Experimental requirements

Use Web search to learn about various types of computer operating systems and organize them into a single document.

Ii. contents of the experiment

Understanding and Mastering the content includes:

1. Definition and concept of computer operating system;

The operating system (Operating system, or OS) is a program that manages computer hardware and software resources and is the core and cornerstone of the computer system.

In detail, the operating system is a bare metal configuration of a system software, is the user and user program and computer interface, is the user program and other programs running platform and environment. It effectively controls and manages various hardware and software resources in computer systems, organizes the workflow of computer systems reasonably, and maximizes the user's use of the computer to play the role of the resources of the operating system classification;

2. Classification of the operating system;

1, batch processing operating system

2. Time-sharing operating system

3. Real-time operating system

1. Analysis of advantages and disadvantages of several common operating systems;

Batch processing system: The advantage is that system resources are shared by multiple jobs, and they work by automatically dispatching execution between jobs. And in the process of running the user does not interfere with their own jobs, thus greatly improving the utilization of system resources and job throughput. Its disadvantage is no interactivity, the user once submitted the job lost control of its operation, and is batch processing, the job turnover time is long, the user is inconvenient to use

Time-sharing operating system: The advantage is interactivity (concurrent sex): The user and the system for man-machine dialogue. Users can directly enter, debug and run their own programs on the terminal, on this machine is to modify the program errors, directly obtained results. Multi-User (multiuser): Multiple users simultaneously use the same CPU and other resources on their respective terminals to maximize system efficiency. Independence: Users can operate independently of each other, not interfere with each other, not confused. Timeliness: Users in a short period of time can get a timely response to the system. Disadvantage: The multi-path in time-sharing system is related to the user situation, and there are few.

Real-time Operating system: The advantage is that it is multi-way. The real-time information processing system is as multi-way as the timeshare system. The system is based on the principle of time-sharing for multiple end-users, while the multi-route control system is mainly used to collect multi-channel information and control multiple objects or actuators. Independence. The real-time information processing system is as independent as the timeshare system. Each end user in the service request to the CTSS, is independent of each other's operation, non-interference, but in the real-time control system information collection and control of the object, but also do not interfere with each other. Disadvantage: The real-time operating system should not only timely respond to real-time event interruption, but also timely dispatch running real-time tasks. However, processor scheduling does not take place at will, as it involves switching between two processes, only at a point in time to ensure "safe switching"

three , experimental Expand Thinking

What type of operating system does iOS and Android belong to?

belongs to the Linux operating system

Lab 0 understanding and familiarity with the operating system