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[[Digital Research]] produsse una variante del suo [[CP/M]] compatibile con il DOS di IBM/Microsoft che mise in vendita come [[DR-DOS]]. Esiste anche una versione [[Free and Open Source Software|FOSS]] denominata [[FreeDOS]].
=== Features of DOS : ===
There are some characteristics that make advise operating system stand out:
1. DOS does not support GUIs and does not recognize mouse inputs.
2. Advise operating system controls files and directories and enables the loading and running of programs. It can of manage resource allocation and manage hardware like disc and memory.
3. It is an operating system designed for a single user that performs several functions to ensure systems are running properly.
4. The file allocation is a tabular structure used to hold these IDS.
5. DOS needs a concept of user responsibilities,support a multi-user operating system, and is less secure. Due to its simple interface and few functionalities, it is incredibly light.
=== '''Working of DOS:''' ===
The procedure a computer goes thought to start up is called the boot process. For a machine running one of the six — disk operating systems listed below, for example.
1. The Masters Boot Record is read by the read — only memory (ROM) bootstrap loader before it transfers Control to it.
2. The boot record starts the computer by loading the operating system into memory and giving it control.
3. Data from a magnetic dise is transferred to the computer's primary memory, the random access memory.
4. The computer offers serval application programming interface (APIc) for applications, such as character input/output, termination, and managing user input thought a keyboard.
5. The OS further offers file, management, which groups, reads, and writes data stored on storage. A hierarchical system comprising folders, Subdirectories, and files is used to arrange the files.
'''Q. How to open DOS in Windows?'''
= Start > All Program > Accessories > Command Prompt.
Start > Run-CMD or Command
'''Q. How to make MS-DOS Window Maximize (full Screem)?'''
= ALT+ ENTER (applicable for Windows xp not for 7,8 & 10)
'''Q. How to exit from DOS?'''
=Exit Command is use to exit Command Prompt.
'''Q. How to change Drive in MS-DOS?'''
= Syntax:- Drive Name: (press enter key)
Example- D:
'''BOOTING:'''
Process that starts up a computer is called booting. It check for proper functioning of all the Hardware (peripheral) devices attached with the system. It searchs for the operating system and, when located, loads it into the main memory (RAM).
=== '''DOS (Disk operating system) Command''' ===
DOS has a relatively small number of commands, and an even smaller number of commonly used ones Moreover, these Commands are generally inflexible because , in contrast to linux and other Ubix — like operating systems, they are designed to accommodate few operating or argument ( I.e.,value that can be passed to the Commands).
Commands are predefine instruction which is used to perform internal and external operation.
A command can be given in capitals or Small letters also. After Typing DOS command we muct press enter key.
=== DOS Today : The Riseand Fall of Disk operating system: ===
DOS has been a significant part of the evolution of the OS. However , its peak has long been over. Here are the reasons why :
'''1. Outdated Technology :'''
DOS lacks the features and functionalities of today's OSes like Windows, macOS, and linux.
'''2. User—Friendly Interfaces :'''
DOS uses text to understand what the user wants to do. Standalone Dos computers cannot run graphics — based applications as efficiently as modern operating systems.
'''3. Lock of Hardware support :'''
DOS struggles with modern Hardware and drives, making everyday use of modern devices and peripherals impractical.
'''4. Limited software Compatibility :'''
Most software applications are for Windows, macOS, or Linux, making running modern applications on DOS Challenging due to compatibility issues.
'''5. Security Concerns :'''
DOS lacks essential security features, making it vulnerable to viruses, malware and cyberattacks. However, companies continue to develop custom system on it.
[https://rohitcomputertechno.blogspot.com/2023/09/DOS%20and%20its%20function.html?m=1 Read full details]
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