What is digital currency BEC
after the transfer of user terminals from PC to mobile phone, the e-commerce form has reached a new turning point, and is rapidly moving towards mobility, fragmentation and socialization. In three years, social e-commerce has occupied 14% of the market share of the whole e-commerce, with an annual growth rate of more than 100%. Once the share exceeds 20%, the replacement of traditional e-commerce will accelerate, just as traditional e-commerce will squeeze offline retail
based on WeChat's user volume and user time in China, the Chinese mainland market has been leading the global market in terms of innovation and market size. The main modes of social e-commerce include online Red e-commerce, content e-commerce and wechat circle of friends e-commerce. In essence, the three business models are based on personal brand and circle of acquaintances to establish trust relationship, and then attract users through content display
Social e-commerce has subverted the trust mechanism of traditional e-commerce in form, but there is no new trust solution mechanism to adapt to the P2P business model of social e-commerce, which restricts the growth of social e-commerce and model innovation in a higher dimension.
digital currency is an alternative to electronic currency. Both digital gold coin and password currency belong to digital currency. It can not be completely equivalent to the virtual currency in the virtual world, because it is often used for real goods and services transactions, not limited to online games and other virtual space. At present, the central bank does not recognize or issue digital currency, and digital currency does not have to have a benchmark currency. Digital currency refers to the digitization of money. Digitization doesn't mean scanning. This is just like digital signature. Digital signature does not mean scanning your signature into a digital image, or using the touchpad to obtain the signature, let alone your signature
digital currency is an alternative to electronic currency. Both digital gold coin and password currency belong to digital currency. Digital currency can be divided into three categories: the first is the familiar game currency. In the era of stand-alone games, the protagonists accumulate money by knocking down the enemy, entering the gambling house and winning money. The second type is the special currency issued by the portal website or instant messaging service provider, which is used to purchase the services within the website. The third kind of virtual currency on the Internet, such as bitcoin (BTC), Wright currency (LTC), Fuyuan currency (FTC), etc.
Digital money (electronic money or electronic currency) is a kind of money in digital form (different from paper money and coins). It shows properties similar to physical currency, but allows immediate transaction and boundaryless ownership transfer. Examples include virtual currency, cryptocurrency and currency issued by central bank and recorded in computer database (including digital base currency). Like traditional currencies, they may be used to buy physical goods and services, but they may also be restricted in some communities, such as online games
The full name of BEC is battery elimination circuit
The full name of UBEC is ultra battery elimination circuit, which separates the built-in BEC circuit from the electronic governor to become a separate electronic device and provides greater output power, so it is generally called external becthe early models were all oil powered, so the receiver and steering gear needed a 5V or 6V battery
later, when the model of motor as power came out, the oil driven remote control system was still used, so in addition to the 12V battery for the motor, a 5V or 6V battery was also used to power the steering gear and receiver
UBEC is mainly used in two situations: with heavy load; The input main voltage is beyond the allowable range of onboard bec UBEC uses digital DC-DC conversion technology with high conversion efficiency, small volume and strong load capacity. The external BEC is needed only when the output voltage is high or the output voltage cannot reach the required voltage and current of the steering gear
extended materials:
development history:
the early commercial battery eliminator was proced by Edward Rogers in 1925 as a supplement to his "battery free" radio receiver series. Another early manufacturer of battery eliminators was Galvin manufacturing company (later called Motorola), which was founded on September 25, 1928 by Paul Galvin and his brother Joseph E. Galvin to build battery eliminators for radio receivers installed in cars
the first car radio is based on vacuum tube technology, which requires two or three different voltages to work:
1) lt (low voltage (used in the UK), low voltage (used in the USA)) is usually 4 or 6.3V at high current to drive the filament
2) ht (high voltage (UK use)), high voltage (us use) is typically 100 to 300 V at low current to power the anode circuit
(3) grid bias sometimes needs extra voltagethe batteries designed for these portable vacuum tube receivers are a combination of several different battery types and sizes, which are combined in a single package and wear slowly at about the same rate. The battery is usually connected to the radio equipment through a specially shaped four pin or five pin connector, and the plug must be inserted correctly when typing
a battery eliminator will use the typical 6 V or 12 V DC of a car battery and convert it into the required LT and HT to power the vacuum tube in the car radio. If there is no battery eliminator, it is sometimes necessary to replace the battery pack in the vacuum tube car radio