computer knowledge book

, responsible for providing power. Chassis: In addition to the chassis can be resistant to pressure, dustproof, but also to prevent electromagnetic interference, radiation and other functions, it is equivalent to the human skeleton, buy a chassis to buy as much as possible to purchase a good look at some of the chassis, now the game players more popular side-through chassis. Monitor: The display is mainly the tool of rendering the screen, when choosing the display, try to choose some higher re

13 11 B or B 1100 14 12 C or c 1101 15 13 D Or d 1110 16 14 E or e 1111 17 15 F or f 10000 20 16 10 Summary A relative concept of a number system, and any number system has its unique use. Standard decimal is used in life. If you want to input IT, you must at least have a certain understanding of binary. If you want to program, you must have an understanding of octal and hexadecimal. The rule

In the Java interview, the knowledge of computer network is also a key point, so the author summarizes the related knowledge of computer network.1.OSI Reference ModelBottom-up: Physical layer (physical medium, bitstream), Data link layer (network card, switch), Network layer (IP Protocol), Transport layer (TCP/UDP prot

resources are the resources of memory, disks, these storage devices. At the bottom of this computer knowledge supplements (a) understand the virtual memory mechanism we said that the operating system uses a virtual memory mechanism to manage storage, from the point of view of the caching principle, the memory as a disk cache. The process is disk-oriented, why is it that the process represents a running pr

new technologies are constantly emerging. These capabilities did not appear out of thin air, but were learned purposefully and targeted based on the accumulation of basic knowledge. Chapter 1 Basic knowledge of computer circuits (1) Summary 1. Basic Physical Quantity of the circuit: ① current ② voltage ③ power 2. Two types of constraints of the circui

Computer now has become a daily necessities of life, then how much do you know about computers? The following small series for you to organize some common computer hardware knowledge, quickly to learn! Computer hardware, including all the physical parts of a computer, to di

contact this server responsible for the. com domain. When the server that is responsible for the. com domain receives the request, if it cannot resolve it, it will find a next-level DNS server address (qq.com) to the local DNS server that manages the. com domain. When the local DNS server receives this address, it finds the qq.com domain server, repeats the above action, and queries until the www.qq.com host is found. L If the forwarding mode is used, this DNS server forwards the request to the

Computer now has become a daily necessities of life, then how much do you know about computers? The following small series for you to organize some common computer hardware knowledge, quickly to learn! Computer hardware, including all the physical parts of a computer, to di

Personal Summary of computer anti-virus knowledge Common computers may have been infected with viruses. computer viruses are troublesome nowadays. This is not a computer problem, but a virus problem. The damage and attachment capabilities of the current virus are far better than those of the past. Anti-Virus is also a

Router fault diagnosis is a comprehensive technology, which involves various aspects of network technology. Let's take a quick look at the basic concepts of networking and routers. First, computer network The development of computer network leads to various forms of connection between networks. Computer networks are usually divided into LAN and WAN according to

strict• Allow direct access to physical addresses• High Build Code quality• Large application Range(20) C + +: Using a very wide range of computer programming languages(21) C #: Microsoft Corporation publishes an object-oriented, high-level programming language that runs on the. NET Framework(22) JAVA: Object-oriented programming language published by Sun Corporation(23) SQL: Structured Query Language(24) VB: Event-driven programming language(25) XML

corresponding request to the client's 5000 port. Then use the IP address of the IP layer to find the destination.3) The client's network layer is not related to the application layer or the transport layer of things, the main thing is to find the routing table to determine how to reach the server, during the period may pass through a number of routers, these are done by the router, not too much description, is simply to find the route table to reach the server through that path.4) The link laye

Computer now has become a daily necessities of life, then how much do you know about computers? The following small series for you to organize some common computer hardware knowledge, quickly to learn! Computer hardware, including all the physical parts of a computer, to di

limit.m68k: Motorola also produces CPUs.PowerPC later Apple and IBM Motorola developed a CPU that was nearly as close as power.Linux now supports all of these CPUs, which is the open source advantage of Linux.The concept of the operating system:The CPU can only run one program at a time. But what we're seeing is really like running many programs at the same time. The computer was very fast, but the input and output was slow, so we introduced a multi-

port number with a unique identity on the network can be combined to form a uniquely identifiable identifier socket. socket principle mechanism:? There are sockets on both ends of the communication. ? network communication is actually the communication between sockets. ? data is transmitted via IO between two sockets. UDP Transport Datagramsocket and Datagrampacket establish the sending end, the receiving end. set up the data package. invokes the Send receive method of th

Windows Platform Windows in programmer's eyes In the eyes of programmers, Windows is very different from ordinary users-not fast and convenient, but rather troublesome and annoying. Especially during the DOS editing process, Windows is very awkward and has many strange concepts. When windows was just introduced, almost all the amateur programmers were eliminated, because programming became quite complex and much more complex than DOS. When the program is complex or too complex to a certain exte

Computer Knowledge-Windows and windows. Com file Dos executable command file, usually smaller than 64 KB ,. the com file contains an absolute image of the program. To run the program's accurate processor instructions and data in the memory, Ms-Dos directly copies the image from the file to the memory. And load the. com program; it does not change.. Bat batch processing Batch processing is a simplified scrip

WEEK 1 I. In terms of knowledge, it is to learn basic computer knowledge. 1. Understand the development, application, composition, and network of computers; 2. Learning about computer operating systems: common operating systems, operating system functions and classifications; 3. Learning office software: Word \ Excel \

the physical address space that the CPU can access 4g=2^32bit4, the server according to the CPU architecture classification1. Non-X86 server: Using RISC (simplified instruction set)2. X86 Server: Complex instruction set, commonly referred to as PC server5, the server hardware generally includes: CPU, motherboard, memory, hard disk (main interface for SATA and SAS), array card, power, video card, network cardHot-swap technology, cabinet6, Storage basic knowl