Write a technical review about several operating systems.

 

• A simple understanding of the operating system is the program that acts as an intermediary between a person and computer hardware.

 

 

The operating system is an indispensable basic system software in a computer system. It is the basic environment support necessary for application programs and user operations. It is the core of a computer system. Is the system program software used to transfer information between the user and the computer system hardware. The role of the operating system is to manage and control the hardware and software resources in the computer system. For example, it is responsible for directly managing various hardware resources of the computer system, such as the management of CPU, memory, disks, etc., and the priority of the supply and demand of system resources For management. The operating system can also control the input and output of the device and operate the network and manage the file system. At the same time, it is also responsible for the management of various software resources in the computer system. For example, the installation of various application software and the setting of the operating environment.

 

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• UNIX operating system: The UNIX operating system is a commercial version and requires a fee. Has a powerful multi-user, multi-tasking operating system.

 

• MS-DOS; acronym for Microsoft Disk Operating System) is an operating system for x86-based personal computers mostly developed by Microsoft. Collectively, MS-DOS, its rebranding as IBM PC DOS, and some operating systems attempting to be compatible with MS-DOS, are sometimes referred to as "DOS" (which is also the generic acronym for disk operating system). MS-DOS was the main operating system for IBM PC compatible personal computers during the 1980s, from which point it was gradually superseded by operating systems offering a graphical user interface (GUI), in various generations of the graphical Microsoft Windows operating system.

 

• Windows system: Windows system is currently the mainstream of computer operating systems. Common systems include Win 7 and Win 10, XP systems. Recently Microsoft announced that it will stop supporting Win 7 systems in 2020. The current win 10 system launched in May 2019 is the latest version and is by far the best Windows. The basic pre-installation for new computer equipment is Win 10 system.

 

    Advantages of Windows Os

 

1. Easy to use since it widely used around the world

 

2. Commercial software is designed for Windows. If you have enough money for expensive commercial software, you can run it using Windows, but rarely using other operating systems.

 

 

• Mac Os: a special system developed by Apple for the development of Apple computers. An operating system that cannot be installed on a normal PC under normal circumstances. At the same time, Apple systems also support the installation of Windows dual systems.

 

         Advantages of Mac Os

1. Simple but powerful user interface: Both macOS and Windows have easy-to-use graphical user interface or GUI. But OS X offers a more straightforward approach to computing. Those who are accustomed with the GUI of iOS found in iPhone and iPad will find macOS somewhat familiar.


2. Fewer viruses and other security issues: One of the advantages of macOS is that it is considerably safer than Windows.

 

• Linux system: It is specifically aimed at enterprise users, and provides the most commonly used platform by web service providers. Individual users are also very few, and in the eyes of most people, the Linux operating system must be an alternative operating system. Even for programmers, many people think that Linux is just an operating system on the server side, let alone personal daily use. We can make the most of our applications when developing programs, and the development efficiency under linux is easier and more efficient than the development under Windows, because linux has great freedom. For mobile, cloud computing, AI technology, and embedded, Linux plays a very important role.

 

• Google Chrome OS: A PC-based operating system developed by Google. Linux-based open source operating system. It can be said in China that I only listen to the Chrome OS system, but I don’t know what it looks like. However, Chromebooks released by Google abroad use the Chrome OS system. The application in the education market has left Apple and Microsoft far behind. In Mayer, Bestbuy and many other online stores, Chromebook sales are also the top notebook sales.

 

 

三

 

Operating System For Mobile Platforms:

 

Ø iOS

Multitouch UI

Apple’s iPhone makes the multi-touch user interface mainstream. The user interaction model includes a virtual keyboard and support for tap, swipe, pinch and un-pinch gestures to zoom and unzoom to support direct, finger-based, manipulation of on-screen objects. The concept of multi-touch interfaces goes back to the 1970s, with interfaces using pinch-to-zoom gestures being created in the early 1980s. The underlying operating system, named iOS, is derived from OS X but with changes to support a different windowing system, restrictions on background processes to enable better application performance and improved battery life, and mobile services such as push notification and the ability to notify apps when a location changes.

Ø Android OS

A free OS platform for mobile phones

Google develops a variant of Linux that is targeted to mobile phones. The Linux system and its libraries are stripped down of excess baggage, standard libraries for accessing components such as a GPS, accelerometer, telephony, and other components found on mobile phones are added, and a graphical UI framework is put in place. All applications are written in Java run on a Java-like virtual machine (Dalvik). This ensures that the applications are not dependent on any specific processor platform.

• Hongmeng Os/ Harmany Os

Harmony OS, styled as HarmonyOS, is an Open source, free, microkernel-based distributed operating system being developed by Huawei. Unveiled on 9 August 2019, the platform is designed primarily for Internet of things (IoT) devices. Version 2.0 of Harmony OS was announced in September 2020 with support for smartphones, head units, watches and smart TVs.