digital magazine

Modern mobile communication systems all use digital modulation technology. Because digital communication is flexible in network construction, it is easy to use digital error control technology and digital encryption to facilitate integration and access the Integrated Service Network (ISDN ), therefore, all communicatio

Based on different video switching modes, video matrices are divided into analog matrices and digital matrices. Simulation matrix: The video switching is completed at the analog video layer. Signal switching is mainly implemented by using single-chip microcomputer or more complex chip control analog switches. Number Matrix The video switching is completed at the digital video layer. This process can be sync

I. Overview of digital signal processing 1. Digital Signal (1) signal: a signal is a carrier for carrying information. Without information, the signal will be meaningless. (2) digital signals: Signals processed by computers 1) Representation: X [N], which is a vertical line with a circle on the top. 2) digital signals

The way to make digital in the future--Siemens ' digital experienceSince ancient times, with "abundance" reputation of Chengdu is a good place to enjoy the ease of life. Ease of life may be a good friend invited to play a game of mahjong, or small groups in the narrow alley of the shadow staggered between a cup of tea. However, in addition to ease, Chengdu has also been changing, the national "West developm

A digital envelope is a method of distributing a symmetric key through asymmetric encryption (that is, two of the public and private keys).The digital envelope is defined as a term in pkcs#7 and is interpreted in the body as follows: The digital envelope contains the encrypted content and the encrypted key used to encrypt the content. Although you often use the p

Summary Through easy-to-understand explanations, this series allows you to easily understand the basic principles and application methods of digital signatures. (even if you are a computer-less enterprise boss, I can also read this articleArticle). Then we will gradually go deep into the technical details. Finally, we will provide a demo of using digital signatures in the B/S information system. Because

Due to digital transmission, digital TVs can be combined with multiple services for transmission through one channel. Therefore, digital TV is not a single TV business, but a digital service transmitted through a television transmission channel, including video, audio, images, and data. Global

Tags: Io ar OS use the on Log Code ad amp With the development of digital circuit technology, digital PLL has been widely used in modulation and demodulation, frequency synthesis, FM stereo decoding, color sub-carrier synchronization, image processing, and other aspects. The Digital Phase-Locked Loop not only absorbs the advantages of high

Introduction With the increasing market demand for symmetric digital cables (hereinafter referred to as digital cables) for integrated cabling, many optical cable manufacturers have begun to develop and produce such cables for this manufacturer to meet market demands. At the same time, the manufacturer found that although the digital cable and the early municipa

In the future, the most important ingredient will be smart data. That is why Siemens is investing in efficiency-enhancing technologies such as flexible service models and advanced PLM software. As these new digital business models become more powerful, they will transform Siemens into a true digital enterprise.Riyadh, the Saudi capital, has a population of about 6 million and is growing rapidly. In order to

Signal data can be used to represent any information, such as symbols, text, voice, images, etc. The form can be summarized into two types: analog signals and digital signals. The difference between analog and digital signals can be determined based on whether the amplitude is discrete. Analog signals indicate that the amplitude value is continuous (the amplitude can be expressed by an infinite number ). Co

After fierce competition in terms of high pixel and small size, digital cameras have become a new keyword for digital cameras this year. Digital cameras of all major brands are capable of anti-shake.Article. All vendors in the market are divided into two factions: optical anti-shake and electronic Anti-shake. Representatives of optical anti-shake manufacturers ar

Do you know what is the use of Word digital signature ? Do you use Word digital signatures to protect your documents? Today I learn to worry about the content of Word digital signature. One, what is "digital signature" We all know the real life of the signature, signature on behalf of a person's exclusive "copyright"

Summary of simple digital clock designIn the information age, the concept of time is deeply rooted, so mastering the design of digital clock has certain epoch significance, and using Multisim to design digital clock for discrete components can greatly improve the quality of personal digital circuits.The design idea is

In the design of electronic system, in order to avoid detours and save time, we should fully consider and meet the requirements of anti-jammingAfter the design is completed, the remedial measures for anti-jamming are carried out. There are three basic factors that form interference:(1) The interference source, which is the component, device or signal that produces the disturbance, is described in mathematical language as follows: DU/DT, di/dt large landSide is the source of interference. Such as

that the private key must never be stored on a network server, and payment requests need to be encrypted via HTTPS or other means to prevent a man-in-the-middle attack from replacing the payee address. Plain textIf you need to be able to determine the amount of payment only by means of copy and paste, you need to provide the address, quantity and unit. Of course, it is also best to include a valid time, for example:(Note: All examples in this section use Testnet addresses.) )Pay:mjsk1ny9sp

Why are there so many differences between the photos taken from the same view and those taken by the same class of digital cameras, don't be upset about your lack of basic photography knowledge, and don't be depressed about camera grades. The following tips can help you reach the level of expertise. Many users who have already started to use digital cameras often rely on the fully automated shooting mode,

You can use Word macro commands to increase your productivity when you edit a document using Word. By default, the security setting for Word macros is high, and macros are automatically disabled when you run the Word Macro command. If you set the Word macro security to Medium, the Word Macro Security warning dialog box pops up every time you run the Word macro. If you set your Word macro security to low to suppress a security warning, you can increase the risk of malicious code or virus damage.

Encryption and digital certificates Encryption and digital certificates Concept Digital summary Key encryption Technology Private key (symmetric encryption) Public key (Asymmetric encryption) Digital signatures

Disclaimer: This article is an original work and copyright belongs to akuei2 and heijin power Community (Http://www.heijin.org) All together, if you need to reprint, please indicate the source http://www.cnblogs.com/kingst/ 3.1 experiment 7: digital tube circuit drive If you have studied single-chip microcomputer, do you know more or less about digital tubes? I will not repeat these basic knowledge, bec