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💻 The first computer in history:
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Computer (computer), commonly known as the computer, is a modern electronic computing machine used for high-speed computing, can carry out numerical calculation, but also can carry out logical calculation, but also has the memory storage function. Can run according to the program, automatic, high-speed processing of massive data of modern intelligent electronic equipment.
❤️ History of development ❤️
- The first generation: electron tube digital machine (1946-1958)
- Generation 2: Transistorized digital machine (1958-1964)
- Generation 3: Integrated circuit digital machine (1964-1970)
- Generation 4: Large scale integrated Circuit computer (1970-present)
⭐️ Computer classification ⭐️
supercomputer
A supercomputer is usually a computer consisting of hundreds or thousands of processors (computers) that can perform large and complex tasks that cannot be accomplished by ordinary PCS or servers. Supercomputers are the most powerful, fastest, and most powerful types of computers. Supercomputers have the strongest parallel computing power and are mainly used for scientific computing. In the fields of meteorology, military, energy, space, exploration and other fields to undertake large-scale, high speed computing tasks.
Network computer
1. Server
A high-performance computer that can provide services over a network. Compared with ordinary computers, stability, security, performance and other aspects are higher requirements, so in THE CPU, chipset, memory, disk system, network and other hardware and ordinary computers are different. Server is the node of the network, which stores and processes 80% of the data and information on the network, and plays an important role in the network.
Is a kind of based on the personal computer and distributed network computing, mainly for professional applications, a powerful data computing and graphics, image processing capabilities, to meet the engineering design, animation production, scientific research, software development, financial management, information service, simulation and design and development of high performance computer and other professional fields. The most prominent feature of the workstation is that it has a strong graphics exchange ability, so it has been rapidly applied in the graphics and images field, especially in the field of computer-aided design.
3. Hub
HUB is a media-sharing network device. Its function can be simply understood as connecting some machines to form a local area network. The HUB itself cannot identify the destination address. All ports on a hub compete for broadband over a shared channel, so as the number of nodes on the network increases, the amount of data transmitted increases, and the available bandwidth per node decreases. In addition, the hub transmits data in broadcast form, that is, to all ports.
A Switch is a general technical term for sending the information to be transmitted to the corresponding route that meets the requirements manually or automatically by the equipment according to the needs of information transmission at both ends of the communication. The generalized switch is a kind of equipment to complete the function of information exchange in the communication system. It is the upgraded product of the hub. The appearance is very similar to the hub, and its function is roughly the same as the hub.
A Router is a network device responsible for path finding. It finds the network path with the least amount of communication from multiple paths on the Internet and provides it to users for communication. A router is used to connect multiple logically separate networks to provide the best communication path for users. The router selects a path for data transmission using a routing table. The routing table contains a list of network addresses and the distance between each address. The router uses the least time algorithm or the optimal path algorithm to adjust the path of information transmission.
Industrial control
Is a kind of bus structure, the production process and its mechanical and electrical equipment, process equipment testing and control of the computer system. Industrial computer for short. It consists of computer and process input output (I/O) through two major components. A computer consists of a host, input and output devices, external disk drives, tape drives, and so on. In addition, a part of the process input/output channel is added outside the computer to complete the testing data of industrial production process into the computer for processing; On the other hand, the computer to exercise the control of the production process command, information into the industrial control object control variable signal, and then sent to the industrial control object controller to. The controller controls the operation of the production equipment. The main categories of industrial computer are: IPC (PC bus industrial computer), PLC (programmable control system), DCS (distributed control system), FCS (field bus system) and CNC (numerical control system) five.
The personal computer
1. Desktop
Also called desktop machine, is a kind of independent phase separation of the computer, completely with other components without contact, relative to the notebook and netbook volume is larger, host, monitor and other equipment are generally relatively independent, generally need to be placed on the computer desk or special workbench. Hence the name desktop.
An all-in-one computer is a computer consisting of a monitor, a computer keyboard and a mouse. Its chips, motherboard and monitor are integrated, and the monitor is a computer, so the machine can be used simply by connecting a keyboard and mouse to the monitor. With the development of wireless technology, the keyboard, mouse and monitor of an all-in-one computer can be connected wirelessly, and the machine has only one power cord.
3. Laptop
Also known as a laptop or laptop, it is a small, portable personal computer, usually weighing 1-3 kg. In addition to the keyboard, the laptop offers a TouchPad, or Pointing Stick, for better positioning and input.
Laptops can be broadly divided into six categories: business, fashion, multimedia, Internet, learning, and special use.
PDA is a small, light, easy to take, practical, inexpensive handheld computing equipment running on embedded operating system and embedded application software. It is simpler and lighter than a laptop in terms of volume, function and hardware. Handheld computers in addition to manage personal information (such as contacts, plans, etc), and can also surf the web page, send and receive emails, you can even as a mobile phone to use, also has: recorder function, english-chinese chinese-english dictionary function, control function, the global clock reminded, leisure, entertainment, fax management functions and so on.
5. Tablets
A tablet is a full-featured computer that doesn’t need a flip, doesn’t have a keyboard, and comes in all sizes and shapes. Its components are basically the same as a laptop, but it uses a stylus to write on the screen instead of a keyboard and mouse, and it breaks the j-shaped design of a laptop, where the keyboard is perpendicular to the screen. In addition to having all the features of a laptop, it also supports handwriting or voice input for greater mobility and portability. Tablet computer was proposed by Bill Gates, at least it should be X86 architecture, from Microsoft’s tablet concept product, tablet computer is a no flap, no keyboard, small enough to fit in a woman’s handbag, but fully functional PC.
The embedded
Embedded Systems is a kind of application-centered, microprocessor-based, hardware and software can be tailored, to adapt to the application system on the function, reliability, cost, volume, power consumption and other comprehensive strict requirements of the dedicated computer system. It generally consists of embedded microprocessor, peripheral hardware device, embedded operating system and user’s application. It is the fastest growing segment of the computer market, and it is home to a wide variety and variety of computer systems.
That’s the end of this sharing
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