BUC word interpretation blockchain
What is BUC
BUC is fully known as bit union coin, which is the platform token of bitun and can be used in various services of bitun platform. BUC is also one of the data contained in bitun ecosystem. BUC is recycled in bitun ecosystem and can be traded on major trading platforms. At present, BUC has launched the coinsuper exchange in the world. At the same time, it supports BUC's charging currency and BUC's trading pair with BTC. It will soon launch some world-famous exchanges such as fire currency. The application scope and application scenarios of BUC include but are not limited to the following:
1, issuance cost of subsequent blockchain projects
2, basic token for subscription of subsequent blockchain projects
3, deposit cost of exchanges and blockchain projects
4, handling charge of digital asset OTC transaction
5, payment cost of other value-added services or member services
the total number of Bucs is 2 billion, Among them, 15% is for team motivation, 25% is for bitun's operation promotion expenses, 20% is for non-public issuance, and 40% is for public issuance (token issuance has ended)
in order to ensure the fund security of bitun platform and the rights and interests of all project participants, the project team will freeze 20% of the business income based on BUC settlement on bitun platform as the risk reserve for fund custody and OTC transactions, instead of recycling into the circulation system for reuse
BUC has launched coinsuper exchange in the world, and supports BUC's withdrawal currency and BUC's trading pair with BTC Coinsuper exchange address: https://www.coinsuper.com/
what is bitun
at present, most market investors are facing a series of pain points, such as difficulties in digital asset management, lack of credibility in blockchain project issuance, security and privacy risks in asset transactions, lack of instant messaging (IM) tools, etc. Bitun is committed to solving all the above problems
bitun is a private bank of blockchain assets. Based on Higgs blockchain network, bitun creatively uses lightning network 2.0 technology to build a digital currency clearing and settlement network, so as to solve the asset management and circulation problems on multiple heterogeneous blockchain networks; At the same time, bitun has reshaped the blockchain project investment through smart contract and blockchain technology, and implemented a complete chain connection of token investment, distribution, unfreezing and other plans, ensuring the openness, transparency and decentralization of the whole process; In addition, bitun will soon realize many important expansion functions, such as decentralized OTC trading and seamless connection with global exchanges, through the deployment of lightning network 2.0 and the creation of ecology
bitun's core technology team is from Alibaba, Huawei, Motorola and other large technology companies, and each of them has experience in research and development of blockchain underlying technology and project responsibility. At the same time, bitun also invited Professor Guo Yike, director of Institute of data science, Imperial College of technology, and Dean of School of computer engineering and science, Shanghai University, to give technical guidance
in order to achieve the bank level safe and convenient user experience, bitun has hired a luxury consulting team, all of which have more than 20 years of experience in large enterprise management, financial services, risk control and financial management in dozens of countries such as North America, Europe and Asia, including Zhuang Ruihao, executive director of China new holding Technology Group Co., Ltd Gong Qingli, CEO of Ping An Securities Group (Holdings) Co., Ltd., ye Diqi, former executive vice president of Bank of communications, Wu Yunwen, CEO of Singapore digital currency exchange, Wu Weiliang, managing director of CITIC futures international, etc
bitun's vision is to solve the trust problem in digital financial activities and provide revolutionary decentralized digital financial services for people all over the world. Let more people of different nationalities and backgrounds simply and safely participate in the digital asset market
Up conversion power amplifier
The L-band signal of satellite modem is converted into high frequency radio signal, which in turn is transmitted to C-band, Ku band or Ka band satellite. The common term is "block converter" or "converter component.". The digital satellite news gathering system (DSNG) is adopted. The uplink signal mostly adopts 14g Ku band, and the output of satellite cat is 70MHz, so the frequency needs to be changed2. For the computer room system, independent up converter can be configured, but the price is expensive. Later, "BUC" appeared. The mole is placed in the high power amplifier, that is, the output of modem is advanced BUC, and the frequency conversion is reversed. Power amplifier mole for amplification. Because this mole is built into HPA, it is called BUC
extended data
working principle
1. Use the current control function of triode or the voltage control function of FET to convert the power of the power supply into the current changing according to the input signal
Because sound is waves of different amplitudes and frequencies, i.e. AC signal current, the collector current of triode is always the same as the base current β Times, β It is the AC amplification factor of triode. If small signal is injected into the base3, the current flowing through the collector will be equal to the current flowing through the base β Then the signal is isolated by a DC isolation capacitor, and the current (or voltage) is the original β This phenomenon becomes the amplification of triode. After continuous current amplification, the power amplification is completed
reference source: Network BUC
2. Improper movement: in the process of computer movement, it is subject to great vibration, which often makes the internal parts of the machine loose, resulting in poor contact and computer crash. So you should avoid vibration when you move the computer
3. Let go of st: if the components in the machine are contaminated with too many st particles, such as magnetic head, it will lead to reading and writing errors, and even cause the computer to crash or even damage the components. Therefore, it is necessary to keep the air clean. If there is too much st in the computer, it is necessary to remove it
4. Device mismatch: if the motherboard and CPU do not match, the main frequency is too high or too low can cause frequent crashes. At this time, the corresponding hardware can be replaced according to the situation
5. Incompatibility of software and hardware: for example, when running Photoshop, AutoCAD 3D animation and graphic design software, the effect of different hardware devices will be different, which may cause crash. We can choose the corresponding hardware or software according to the actual situation
6. Memory mole failure: it is mainly caused by loose memory mole, faulty soldering or quality of memory core. Remove the memory mole contact fault according to the body condition. If the memory mole has quality problems, replace it
7. Hard disk failure: it is mainly caused by the aging of hard disk or bad channel and bad sector caused by improper use. In this way, the machine is prone to crash in operation. If the plot is light, it can be ruled out with special tool software. If the plot is serious, it can only replace the hard disk
8. CPU overclocking: overclocking improves CPU performance and makes it unstable. The reason is that the speed of CPU accessing data in RAM is faster than the speed of exchanging data between ram and hard disk. Overclocking makes the contradiction more prominent, and aggravates the situation that the required data can not be found in RAM or virtual memory. In this way, there will be "abnormal error": the solution is simple; Is to let the CPU work at the specified normal frequency
9. Hardware resource conflict: it is an abnormal error caused by the setting conflict of sound card or display card. In addition, in case of interruption, DMA or port conflict of other devices, a few drivers may be abnormal, resulting in crash. Solution: start in "safe mode" and make appropriate adjustment in "control panel - System - equipment management". For abnormal errors in the driver, you can modify the registry. Select "start run", type "regedit", enter the registry editor, find and delete all the "primary keys" and "key values" related to the prefix string of the driver through the "find" function of the menu, and restart
10. Insufficient memory capacity: the larger the memory capacity, the better. It should not be less than 0.5-1% of the hard disk capacity. So we should replace the memory mole with the largest capacity
11. Using inferior components: a few unscrupulous businessmen use inferior boards and memory when assembling compatible computers for customers, and some even sell counterfeit motherboards and remaek CPU and memory. Such machines are very unstable in operation, and crash is inevitable. Therefore, users should polish their eyes when buying the machine. It's better to bring an expert staff, test the computer with some newer tools (such as hwinfo, Norton, etc.), test the machine continuously for a long time (such as 72 hours), and strive for the longest warranty time< Virus infection: virus can make the computer work efficiency decline sharply, causing frequent crashes. At this time, we need to use anti-virus software such as KV3000, Jinshan Duba, Ruixing, etc. to carry out comprehensive virus detection and anti-virus, and upgrade the anti-virus software regularly
2. Improper setting of CMOS: this fault phenomenon is very common, such as improper setting of hard disk parameters, mode settings and memory parameters, resulting in the computer unable to start. If the memory without ECC function is set to ECC function, it will crash e to memory error
3. Error deletion (or error) of system files: because Windows 9x needs four files: command.com, lo.sys, msdos.sys and drvspace.bn to start, if these files are damaged or deleted by mistake, even if the hardware settings in CMOS are correct, it will not help. Solution: use the boot disk of the same version of the operating system to start the computer, and then type sys C: either
4. The initialization file is found to be damaged: because the system.ini, win.ini and registry files need to be read when Windows 9x starts, the config.sys and autoexec.bat files will also be read if they exist. As long as there are error messages in these files, they may crash. In particular, system.ini, win.ini, user.dat,
system.dat are particularly important
5. Dynamic link library file (DLL) missing: in Windows operating system, there is another kind of file which is also very important, that is, DLL files with the extension of DLL. From the nature of these files, they belong to shared files. A DLL file will have multiple software calls ring operation. When deleting some application software, the installation program of the software will record the files it has installed and prepare to delete them one by one. At this time, it is easy to delete the dynamic link library files, which is also the case that other software needs to call when running. This leads to software errors. If the lost link library file is an important core link file, the system will crash or even crash
6. The hard disk has too little free space or too many fragments: if the hard disk has too little free space, some applications need a lot of memory to run, so virtual memory is needed, and the virtual memory is provided by the hard disk, so the hard disk should have enough free space to meet the demand of virtual memory. At the same time, we should form a good habit of regularly sorting out the hard disk and cleaning up the junk files in the hard disk
7. Boos upgrade failure: Backup BIOS in case of accident. If your system needs to upgrade the BIOS, it is better to make sure that the BIOS version you are using is consistent with your PC before upgrading. If the BIOS upgrade is not correct or unexpected power failure occurs ring the upgrade process, the system may fail to start. So be sure to know the BIOS model before upgrading the BIOS. If the BIOS upgrade tool you use can back up the current BIOS, the previous BIOS to disk. At the same time to see whether the system supports BIOS recovery, and also know how to recover
8. Improper software upgrade: most people think that there is no problem with software upgrade. In fact, in the process of upgrading, some shared components will also be upgraded, but other programs may not support the upgraded components, resulting in various problems
9. Abuse of beta software: it is better to use less beta software, because the beta software usually has some BUC or is not stable in some way, resulting in data loss, program error, crash or system failure to start after use
10. Illegally unloading software: when unloading software, do not delete shared files, because some shared files may be used by the system or other programs. Once these files are deleted, some application software will fail to start and crash, or the system will crash. Do not delete the directory where the software is installed. If you delete it directly, there will be a lot of garbage in the registry and windows directory. Over time, the system will run unstable and cause a crash
11. Using pirated software: you have to go through a thorough virus detection test, because most of these software contain a large number of viruses. Once implemented, it will automatically modify your system, infect your system or application software, causing a system and heart crash
12. Defects of application software itself or incompatibility with system software: this situation is common, such as those 16 bit application software running well in DOS or windows 3. X running in Windows 98. Windows 98 is 32-bit, although it claims to be compatible, it can't coordinate with 16 bit applications in many places. Microsoft is not going to spend a lot of effort to study what it is going to give up. Therefore, if it is not necessary, it is best not to use 16 bit application software
13. Too many programs are started: this makes the system resources exhausted, and the data required by indivial programs can not be found in the memory or virtual memory, and the system will make abnormal errors. Solution: don't start too many applications at the same time. In case of "abnormal error", just restart the system
14. Illegal operation: such as opening or releasing the program with illegal format or parameters. In this regard, we should keep in mind the correct format and parameters, do not open and release unfamiliar programs
15. Shut down the computer abnormally: do not use the power button of the chassis directly, otherwise the system files will be damaged or lost, causing automatic startup or running crash. For Windows 98 / 2000 / NT and other systems, this is very important. Otherwise, it will cause system crash or hard disk damage
16. Sometimes all kinds of software run normally, but they suddenly crash for no reason. After restarting, these applications run normally. This phenomenon is called pseudo death. Most of the reasons are memory resource conflicts in Windows 98. As we all know, application software runs in memory, and the space can be released after closing the application software. However, e to design reasons, some application software can not completely release memory even after it is shut down. When the next software needs to use a memory address, there will be conflicts
in short, the causes of windows crash are indeed caused by a variety of abnormal shutdown, and the solutions should also be targeted. Just like the computer's various faults, the solutions are different. The purpose of talking about the causes and ways of computer crash is to let us understand what happened when the computer crashes. In this way, we don't have to panic. According to different phenomena, we can take different solutions. The only purpose is to make our computer work better