What does lac's first digital currency mean

1.

For many people, the concept of digital currency is a mystery. But there is no doubt that digital currency is different from virtual currency

At the same time, digital currency is different from electronic payment. In the actual use experience, digital money and electronic payment may feel similar, but they are still quite different in essence. Before digital currency, the financial instry has been highly informationized. Such as Internet banking, WeChat, Alipay and so on pay the popularization of electronic technology, physical cash accounts for only a very small part of the total circulation of money. In spite of this, because the money used in the transaction comes from the bank account, it actually corresponds to the banknotes

2.

Many people think that bitcoin is the first digital cryptocurrency in the world, but it is not

In 1982, cryptographer and computer scientist David Chaum proposed a creative scheme blind signature: on a piece of paper, I choose a serial number that only you know, and then I sign it. Because I don't know the serial number, I can't it to another person. This idea forms the first real e-money scheme, which makes anonymous transaction possible

at present, China is experimenting with digital currency, which is legal currency with national credit as guarantee, just like paper money. In the environment of legal digital currency, it will be possible for the economic system to decide the money supply spontaneously and endogenously, issue and recover money automatically through preset and reliable program algorithm rules and on the premise of ensuring the stability of currency value. The role of the central bank may not only be the decision maker of money circulation, but also the designer of the rules of money circulation algorithm

in fact, digital currency is just a form of electronic payment to replace traditional paper money, and the specific application scenario is mobile wallet payment. Digital money is not a virtual currency that can be generated by underground mining and easy to form investment bubbles. Investment in bitcoin and other virtual currencies and electronic money is a Ponzi scheme in a strict sense. The ordinary people need to be careful to avoid leeks. p>

3. Indians like to use lac as the unit of measurement:
an lac is 100000
sometimes they use lac to calculate the amount
US dollar one lac three thousand two hundred: 103200 US dollars

4.

Lac is called L2TP access concentrator

The lac is located between the remote dialing user and the LNs device and is responsible for the data forwarding between the remote dialing user and the LNs device

to forward data from lac to LNs, it is necessary to use L2TP protocol to establish a tunnel between the two devices, and PPP link is still used between lac and remote dial-up users

lac: Liberal Arts College

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extended data

the coding method of Lac has corresponding regulations in every country, and China Telecom has clear regulations on the coding method of Lac on GSM network (see the system specification of GSM of the Ministry of Posts and Telecommunications)

generally, the allocation and coding of Lac have been determined in the initial stage of network construction, and there are few changes in the operation process. The size of location area code (LAC) is a key factor in the system

if the lac coverage is too small, the location update process of the mobile station will increase, thus increasing the signaling traffic in the system

On the contrary, if the location area coverage is too large, the same paging message will be sent in many cells when the network paging mobile station, which will lead to the overload of PCH channel and increase the signaling traffic on Abis interface

e to the strong mobility and burst in mobile communication, there is no unified standard to adjust the size of location area. The operation Department can make long-term statistics on the PCH load and signaling link load of each region according to the current network to determine whether to adjust the size of the location area

if the former phenomenon is serious, the location area can be appropriately reced, otherwise, the location area can be appropriately increased. In general, it is suggested that the location area should be as large as possible