Some of the functions of the computer itself???

To be sure, the computer itself is powerful, and you want to do more with the computer (intrusion, etc.). The first thing to learn is that the cmd command is a command interpreter based on Microsoft Windows, similar to Microsoft's DOS operating system. is a 32-bit command-line program running on Windows NT 2000 XP 2003 Vista.

Open with: Start - Run - Type "cmd" - OK (Vista users, please use the start search box to type cmd, right-click in the search box, run as administrator) and go here.

Learning cmd commands (I'm not going to post them at length) can do a lot of things (test networks, etc.).

Remember.

Basic functions of the computer: Data processing function The function of computer data processing mainly completes the tasks of data organization, processing, retrieval and calculation. This data can be obtained in many forms and has a wide range of processing needs.

Data storage function The function of computer data storage mainly realizes that all the data that needs to be processed by the computer is saved on the storage medium of the computer, including the system file data required for the operation of the computer. Data transfer capabilities A computer must be able to transfer data between its internal and external aspects. A computer's operating environment is made up of various devices that act as data sources or destinations.

When data is sent from one device to other external devices, there is a direct connection to the computer, and this process is the input and output process. When data is transmitted from a local device to a remote device or from a remote device to a local device, a transmission process, that is, a data communication process, is formed. Control function In the computer system, the control unit manages the resources of the computer and coordinates the operation of its functional part to respond to the requirements of the instruction, and its data processing function, data storage function, and data transmission function are provided and controlled by the computer instruction.

Resources.

1. Traditional definition Computer software is divided into two categories: system software and application software System software is used to manage the computer itself and applications Application software is software designed to meet the specific needs of users The operating system is the most basic system software, and it and the system tool software constitute the system software But it is difficult to define the operating system, and there is no recognized unified statement The following lists several common angles for observing the operating system in today's operating system textbooks Top-down angle, The operating system is the first layer of software on bare metal, the first extension of the machine, providing users with a virtual machine equivalent to the actual hardware From a bottom-up perspective, the operating system is resource management, which controls the allocation of processors, memory and other IO interface devices in an orderly manner among competing programs From the perspective of software classification, the operating system is the most basic system software, which controls all the resources of the computer and provides the interface for program development From the perspective of a system administrator, The operating system reasonably organizes and manages the workflow of the computer system, so that it can provide safe and efficient computer resource sharing for multiple users From the programmer's point of view (that is, from the perspective of the operating system generation), the operating system is to free the programmer from complex hardware control, and provides a virtual machine for software developers, so that it is more convenient to design programs From the perspective of general users, the operating system provides them with a good interactive interface. So that they do not have to know the details of the hardware and system software to use the computer conveniently From the perspective of the hardware designer, the operating system provides a support platform for the expansion of the computer system's functions, so that the hardware system and the application software are relatively independent, and the hardware module can be upgraded and new hardware can be added within a certain range without affecting the original application software In general, the traditional operating system is defined as follows: The operating system is the control and management of various hardware and software resources in the computer system. Reasonably and effectively organize the work of the computer system, provide users with a convenient and scalable working environment, so as to play the role of an interface connecting the computer and the user This definition is based on the specific functions of the operating system The position of the operating system in the computer system can be described according to the following schematic diagram Interface diagram According to the hierarchical model, it is In the traditional definition, the relationship between the operating system and the user is a passive and active relationship. That is, the user commands the operating system to complete his own requirements for the computer in an interactive way, and the operating system allocates resources according to the needs of completing the task, and its only initiative is how to allocate and when to allocate it. This way of defining the operating system is called passive definition, and it is theoretically believed that the operating system does its job completely according to the user's requirements.