Ethereum sat

1.

Digital money is legal

digital currency itself is legal in China. Digital currency is defined as Internet goods in China, but the relevant supervision is still blank, and digital currency is still in the gray area in China. Well known digital currencies include bitcoin, Leyte coin, Ruitai coin, thousand gold card, dog coin, etc

however, there are also some non developers who use the cover of digital currency to carry out pyramid schemes, such as the Vicat scheme, treasure scheme, Porter scheme and so on

development materials:

digital currency is different from the virtual currency in the virtual world, because it can be used for real goods and services transactions, not limited to online games. The early digital currency (digital gold currency) is a form of electronic currency named after the weight of gold. Today's digital currency, such as bitcoin, lightcoin and ppcoin, is an electronic currency created, issued and circulated by check sum cryptography. It is characterized by the use of P2P peer-to-peer network technology to issue, manage and circulate currency. In theory, it avoids bureaucratic examination and approval, so that everyone has the right to issue currency

2. Ask about the admission requirements of a certain university, the GPA, GRE, GMAT, sat, IELTS / TOEFL scores, and the performance requirements. You can use the volunteer reference system for studying abroad http://tieba..com/p/5262856400 To see how many students in the system who are similar to you have successfully applied for this school or those majors, and to see how many points they can get at least, You can know the requirements of the performance conditions of the application.

3. I've only heard the command netstat
netstat - E - this option is used to display statistics about Ethernet. It lists the total number of bytes of datagrams transmitted, the number of errors, the number of deletions, the number of datagrams and the number of broadcasts. These statistics include both the number of datagrams sent and the number of datagrams received. This option can be used to count some basic network traffic (

netstat - R - this option can display information about the routing table, similar to the information you will see when you use the route print command later. In addition to showing valid routes, it also shows the currently valid connections

netstat - A - this option displays a list of all valid connection information, including established connections and those listening to connection requests

netstat - N -- displays all established valid connections<

the magical use of netstat
people who often surf the Internet generally use ICQ. I wonder if you have been harassed by some annoying people and dare not go online. Do you want to complain but don't know what to do? In fact, as long as you know the other party's IP, you can complain to his ISP. But how can we know each other's IP through ICQ? If the other party chooses not to display IP address when setting ICQ, you cannot see it in the information bar. In fact, you only need to use netstat to do this: when he connects with you through ICQ or other tools (for example, you send him an ICQ message or he sends you a message), you can immediately enter netstat - N or netstat - A under DOS prompt to see the IP or ISP domain name used by the other party when surfing the Internet, and even the port used is completely exposed, If you want to teach him a lesson, this information is enough

4. You can refer to the information I sent to you.

5. Analyze according to your needs. First, the system needs to have a data transmission path; second, there is a multi-channel audio and video composite codec transmission path. And is a full two-way station, do not know how much your company's investment in this project, give you the simplest solution

list from the equipment below the satellite (satellite frequency rental fee is not considered)

antenna (main station 4m 5, each substation 3M)

high frequency head (low noise amplifier, receiving device), power amplifier (power depends on the situation, transmitting device)

frequency converter, modem (molating and demolating satellite signal), serial port server (analyzing the instructions sent by computer to modem), data gateway (data transmission control), media gateway (video and audio transmission control), switch (centralized and subcontracting transmission), webcam (collecting video and audio), TV (outputting video and audio), etc, Computer (control units)

the power supply of high frequency head and power amplifier can be outdoor power supply or indoor equipment uplink power supply. If indoor equipment uplink power supply is adopted, it is necessary to install demultiplexer in modem uplink section

the specific connection mode can be explained by a simple topology map. If it can't be pasted here, I'll send you an email if necessary

the main station (head office) and sub station (subsidiary) have the same equipment. If domestic equipment is used, the cost is lower, but the quality is not guaranteed, so it is recommended to use imported equipment

the above are the solutions adopted by our company, which can be discussed.