Windows and its father. II

[本站原创] [serialized tutorial
series] "Windows and its father" about DOS
Chapter 1

Chapter 1 Main operating system Tasks

What do we do with the operating system? This is a very basic, but also the most important issue. As the name implies, the disk operating system is used to "operate" the computer. How do you say this? We know that computer systems are made up of visible and tangible hardware and invisible software. The hardware is controlled by I/O devices such as keyboards, monitors, printers, and other external devices such as dance pads. And so on. Various hardware can be directly controlled by the operating system, as described in the following sections. But the main function of the operating system is to operate the software, which is also the main part of this column.

As mentioned earlier, software is an invisible "information". We can't see it in physical (physical), so how to manage it logically? The designer of the operating system proposed the concept of a file. That is to say, from the perspective of the operating system, all information is stored on the disk in the form of files. The operating system manages all the information through the management of the files. A file, maybe a piece of music, a small poem, a web page, a program may also be a logic bomb, a virus parasite. In short, a file is a variety of information - even the operating system itself is composed of files. If a piece of software consists of multiple files, the entire software will not function properly as long as it is missing or damaged. Everything is built on the operating system, and the operating system can control it all, but no matter what way, always start with the file before you can do other things. The disk itself is a piece of hardware that is tangible, but not all disks can be used. The operating system logicalizes the physical disk by formatting, and the disk can be used after the file system is built on it. Therefore, from the point of view of the operating system, the disk is a special external device that stores files. It deals with users most frequently and is one of its main management tasks.

1-1 Operating System Management Scope

In summary, file management and disk management are the focus of operating system tasks. External devices are also within the management scope of the operating system, and the output management of the display is still important. In the following chapters, we will explore in depth the DOS
and Windows operating system file system, command format, analysis of some important commands, batch file programming, easy assembler creation, interactive Programming and general problem solving ideas.

I will first introduce how DOS
works in every detail. The Windows system is actually an extension of DOS
, so in addition to infiltrating Windows' improvements and extensions to DOS
in each chapter, I also devoted a chapter to explore DOS
Contacts Windows and the unique features of Windows.