What are the main differences between Windows and DOS in programming?

The DOS system is based on a 16-bit digital computing system, which is non-visual, and can only be operated on computer hardware through commands. All visual operating systems are now integrated with DOS, and in a sense the current system is an extension of the DOS system. One of the advantages of DOS is that it does not freeze :)

DOS stands for Disk in English

operating

The abbreviation of System, which means "disk operating system", is the predecessor of Windows.

The biggest difference between DOS and Windows is that DOS can only run one program at a time, while Windows is a multitasking system that can run multiple programs at the same time. For example, you can listen to songs and surf the Internet at the same time, which is absolutely impossible under DOS.

Secondly, DOS is a command-line operation, and the program is simple and straightforward to run. Windows is a graphical interface operation, which is more intuitive, but the real operation is in the background, and we can't see it.

In fact, in addition to some functions that cannot be achieved under DOS, most computer functions (such as watching movies) can also be realized under DOS, such as DOS.

Although it is now the world of Windows, DOS is still very useful, such as the famous GHOST software for backup and restoration system, which can only run under DOS at present; Windows installed under DOS is the most stable and pure; Solving hardware problems, carrying out routine maintenance and repairs, such as flashing BIOS versions, is also inseparable from DOS; The operation of programming software, such as the famous C language, also runs under DOS.

In short, DOS is far from the time to withdraw from the stage of history, its role is very large, a real computer master, will definitely be DOS operation skills.

1. DOS stands for English disk

operating

The abbreviation of system, which means "disk operating system". DOS is a class of operating system on a personal computer. For 15 years, from 1981 to 1995, DOS worked at IBM

PC compatible phones occupy a pivotal position in the market.

2. There are two kinds of common DOS: IBM's PC-DOS and Microsoft's or socks MS-DOS, their functions and command usage formats are the same, and MS-DOS is commonly used.

3. Under the follow-up development of Microsoft, the Win9X system was inspired based on MS-DOS.

4. Windows is a desktop operating system, and there are Win95, Win98, WinMi, Win2000, etc. in the early days.

What is DOS?

1) What is DOS? What's the use?

The most frequent thing we use on computers is the English diskoperating

The abbreviation of system, which means "disk operating system", as the name suggests, DOS is mainly a disk-oriented system software, to put it simply, DOS is a bridge between man and machine, is a layer of "shell" outside the machine hardware, with DOS, we don't have to have an in-depth understanding of the hardware structure of the machine, nor do we have to memorize those boring machine commands with rote, just through some DOS commands close to natural language, We can easily do most of the day-to-day operations. In addition, DOS can also effectively manage various software and hardware resources, and schedule them reasonably, all software and hardware are under the monitoring and management of DOS, and carry out their work in an orderly and sensitive manner.

Two. For more information about Windows, see the address bridge below.

DOS is an abbreviation for Disk Operating System, which means "disk operating system". DOS is a class of operating system on a personal computer. For 15 years, from 1981 to 1995, DOS was a major player in the IBM PC-compatible market.

Moreover, if some DOS-based versions of Microsoft Windows, such as Windows and ME, are included, then their commercial life can be calculated to be at least 2000 years. In all subsequent versions of Microsoft, DOS is still retained.

There are many programming languages in the DOS environment, including: Fortran, Basic, Pascal, C, C++, Assembly Language, etc. Different languages have their own areas of application and characteristics.

If it is a scientific computing application, the FORTRAN language is more suitable than other languages. C and C++ are the more popular programming languages, but they are not a panacea. What you can't do in C, you can't do in C++.

However, writing a program in C++ is easier to read and communicate than writing a program in C, and the programming efficiency is better. Assembly language is suitable for applications that respond quickly to hardware interfaces, but it is difficult to write, debug, and maintain the assembly language, and it is not easy to read. The specific language to use should be analyzed on a case-by-case basis and selected according to the actual situation and needs.

DOS is an operating system, non-programming language, which can only write and execute batch files, and executable files compiled by other programming software.

It should be written primarily in assembly and C.

I don't know what LZ is asking.

DOS is an operating system just like Windows XP, is a system platform, the later XP is called the Windows system, the previous software is running under DOS, if you know how to program, you can write such programs with VB and VC.

DOS belongs to the operating system, not to any programming language, thank you!

Among them, the C language accounts for more than 90% of the ** volume, and realizes the main operating system functions. Of course, the operating system is not just a kernel, but also a large number of necessary components and tools, which are written mainly in C++ in Windows, C in Linux, and C and assembly in DoS.

The construction of linguistic tools is a cyclical process. In the early days of programming, there were few languages, and at that time the binary machine code was written directly and the CPU ran the instructions directly. Later, the program was larger and more complex, and this method was unsustainable, so some people wrote some simple compilers in binary code, and then the simple compiler was not enough, so they used it to write more complex compilers, and so on, and so on, and we have today's advanced compilation environment.

A programming language is not born with certain abilities, the capabilities of a programming language are given by the compiler. A language is a bunch of symbols that the compiler defines to correspond to binary machine code, so you can write any program in any language as long as the compiler supports it.

The Command Prompt is a program, but not a DOS program, let alone a DOS program, it is a standard Windows program. If you want to cancel it, you can just delete it. As for why Microsoft didn't cancel it, it's because a lot of people need it.

Just as a lot of people need MediaPlayer, you can also ask why Microsoft didn't cancel MediaPlayer since it has Storm Video. However, the console subsystem is the core subsystem of Windows, and this cannot be canceled, because a large number of existing programs rely on this simple and effective subsystem to work, and if this subsystem is canceled, many existing programs will not be able to be used, and the development cost of some programs will increase in the future. The Command Prompt is a program based on the console subsystem, and it provides a standardized interface for executing Windows tasks from the command line.

Windows can certainly be used to write operating systems, as long as you have the right compiler. You can develop any program under Windows, including mobile phone programs, Linux programs, UNIX programs, industrial control programs, and so on. The key is to have a compiler.

Of course, you can also write binary code, so you don't need any compiler.

Difference between CMD and MS-DOS.

Conceptual part: 1) The difference between CMD under 2000 and XP and MS-DOS at 98:

Calling the command prompt is not the same as ms-dos under 98, so we can't confuse it, but we can use it to execute a lot of dos commands, such as: dir, cd, del, etc.!

2) Internal commands under cmd differ from external commands:

The internal command under cmd refers to: we can execute the command directly under cmd, such as: telnet, ftp, dir, cd, etc., you can enter help under cmd to view, external commands, that is, commands that cannot be run directly under cmd, (such as commonly used nc) he needs to switch to the directory he (nc) does under cmd before you can run nc and nc commands.

Run the command with.

cmd is not the same.

The dos command is an operation on the system.

And running a command just opens some programs.

Isn't that easy to understand?

Running commands are just a few of the instructions in DOS! And DOS is an operating system! The commands stored in XP are just some practical ones, while DOS instructions are actually a lot! The relationship between them is a white horse and not a horse!

Tricks in DOSThe tricks in DOS.

I often use DOS, and the author has summarized a few tips, which are specially taken out to be smiling and generous.

1 Use set to set the display mode of DIR in batch processing.

Add c:

setdircmd

w p a, (the three parameters can be used separately) so that you only need to type c:

dir can achieve a split-screen five-line display, and display the effect of hidden directories and files at the same time. To disable this display, simply type c:

setdircmd

--for carriage return) In the same way, using set can also simplify other commands.

2 Tips for using edit under DOS.

People who have used WPS think that the function of "defining blocks" is very useful, in fact, edit under DOS can also implement definition blocks, and there are shortcut keys to use. Hold down the shift key first, then use the arrow keys to control, shift

home is defined to the beginning of the line, shift

end defines the end of the line, shift

homectrl is defined to the header ...... fileTo copy a block, you first need to define the block and then press Alt

e selects edit to call up the copy item, press enter, and put the defined copied item into the clipboard. Then move the cursor to the target position and press Alt

e, select paste, press enter, and the block that was just placed on the clipboard is copied to the current cursor. You can also move blocks in this way.

3 Use the type command to copy the encrypted disk.

You can use the type command under DOS to copy the information on some encrypted disks that cannot be copied by copy and pctools, by first noting down the extension of the file names of all files on the target disk, and then inserting the source disk with the A: drive, and an empty disk with the B: drive, and typing the following command:

A: Type File Name B: File name: Type all files on the encrypted disk to the target disk according to this format, and a disk will be formed that is the same as the original encrypted disk.

Another great thing about the 4 type is to get an unknown virus**.

With type, you can cleverly use the characteristics of viruses to infect com and exe to obtain unknown viruses**. Now create two zero-byte vir files in the root directory of the C drive, and use the extension COM and EXE respectively, the method is as follows: C:

typenul>，c:\>type

NUL >, depending on the characteristics of virus intrusion, once infected, the number of bytes of files with the extension com and exe will increase. The added bytes are all the viruses that are infected, so as to carry out targeted anti-virus measures, such as copying the virus ** into some anti-virus software and other virus ** files, you can realize the upgrade of the anti-virus software by yourself, which is very timely.