In recent years, various calculations have emerged, such as cloud computing, fog calculation, 霾 calculation, edge calculation, and cognitive calculation. The emergence of these calculations plays a different role in different industries and plays a different role. To a certain extent, they are complementary to the indispensable technological development needs.
Fog is a cloud closer to the ground
Taking the fog calculation as an example, the fog calculation was originally proposed by Professor Prof. Stolfo of Columbia University in New York, USA. The inspiration was derived from the metaphor of the image of fog to stop hacking. What makes fog calculation widely spread and applied is a Cisco company in the United States, which redefines and applies fog computing to become a distributed computing infrastructure for the Internet of Things, extending computing power and data analysis applications to the network. "Edge", which enables customers to analyze and manage data locally, giving instant insights through joins.
In the fog computing mode, data, (data) processing, and applications are concentrated in devices at the edge of the network, rather than being stored almost entirely in the cloud. It is an extended concept of cloud computing.
Fog calculations are not made up of powerful servers, but are composed of functional computers with weaker performance and more dispersion. They are infiltrated into factories, automobiles, electrical appliances, street lamps and various materials in people's material life. For Cisco, the use of a large number of high-end network facilities to connect more computers and data centers, thus forming a fog computing industry ecological chain, has to say that Kesi is the first to smell the commercial taste.
Then Cisco laid out the fog calculation
Cisco introduced 15 new products to build its IoT integration system, trying to become a "fog computing" promoter.
Cisco's IoT approach is based on a portfolio of products, reference architectures, and ecosystem-centric systems such as Rockwell Automation and General Electric.
The Internet of Things introduced by Cisco covers a large number of infrastructure devices. It also includes analytical tools, application management, and so-called "fog calculations."
Cisco's IoT systems and products address network connectivity, fog computing, analytics, security, management, and automation and application implementation.
Then Microsoft, Intel, ARM, Dell and other major technology companies and Princeton University joined the concept camp, and established the non-profit organization OpenFog Consortium (open fog alliance), designed to promote and accelerate the spread of open fog computing, promote Internet of Things development.
The organization has now identified several cases where edge computing is needed to implement IoT applications, including smart buildings, drone delivery services, real-time underground imaging, traffic congestion management, and video surveillance. The organization published an executive summary of its fog calculation reference architecture in February 2017. 
Fog calculation plays an important role in the Internet of Things
Fog computing has gradually begun to emerge in other areas such as smart cities, connected cars, drones, etc. It still needs a versatile, interoperable platform to advance this digital revolution.
Fog calculations have multiple characteristics and attributes: low latency and position sensing, a wider geographical distribution, adaptability to mobility applications, and support for more edge nodes. These features make mobile service deployment more convenient and meet a wider range of node access.
The architecture used for fog computing is more distributed and closer to the edge of the network. Fog computing centralizes data, data processing, and applications at the edge of the network. Data storage and processing rely more on local devices than servers. Fog calculation is a new generation of distributed computing, in line with the "decentralization" of the Internet.
The future will be the era of the Internet of Everything. With the improvement of the technical standards of the Internet of Things industry and the continuous breakthrough of key technologies, the era of data explosion will become closer and closer. The final result of the development of the Internet of Things is to interconnect all electronic devices, mobile terminals, household appliances, etc. These devices have a large number and wide distribution, and fog calculation can solve this problem.
In the case of autonomous driving, the cell network connects vehicles equipped with laser detection and measurement systems (lidars), image processing systems, and other autonomous driving devices with other vehicles, pedestrians, intelligent infrastructure, and various cloud services. Together, we will work together to achieve a series of services such as in-car entertainment, predictive maintenance, and remote diagnosis.
Fog calculation can provide information entertainment, security, traffic protection and other services in the service menu of the Internet of Vehicles. Intelligent traffic lights require calculations of mobility and location information in particular, with a small amount of computation and high anti-delay requirements. Real-time calculations are very important, so each traffic light has its own computing power to complete its own intelligent command. For mission-critical tasks such as helping vehicles avoid highway crashes, this time-critical task should preferably be handled at the edge of the network, and it is clear that only fog calculations are most appropriate.
The concept of the Internet of Things was first proposed by Professor Kevin Ash-ton of the Massachusetts Institute of Technology in 1999. It has experienced the illusory ideas of earlier time and has now emerged in people's lives. Through the combination of fog calculations, I believe that the development of the Internet of Things will be clouded and ushered in a new dawn of technological innovation.
Function description
The socket is ordinary converter,with two output 5V2A power USB power supply at the same time,can be very convenient in use electrical appliances and recharge the equipment at the same time,such as digital products like Iphone Ipad,MP3,MP4 etc.The charge apply to full range of international AC output,no-load power consumption less than 0.3W,with short circuit,overload,over-voltage protection,can be convenient for your life and save more energy
Timer Control Time Adgustment
1.Press the power switch 1 time,the 1HOUR LED will light on.The Timer into ON mode,USB and control socket output ON .
2.Continuously press the power switch the LED light on,the Countdown mode and LED light on will cycle change from 1HR,2HR,4HR,6HR,8HR,10HR.
3.Choose you need countdown time mode,the mode LED will lighto on,start countdown until countdown time finish,the control output and USB change to OFF
4.Then the countdown is start,The Time indicate LED will from high to low auto change until Countdown finish off.
Failure analysis:
1.check whether the power supply connection is good
2.check whether the USB cable is loosen
Warning Note:
1.Use indoor and dry location ONLY
2.The load max does not exceed 15A 3600W
3.This product does not convert voltage please do not miss use DO NOT exceed the maximum loading of 3600 Watts 15A
4.Always have earth connection for safety reason
5.If in doubt please consult with a qualified electrician
USB Countdown Timer, USB Countdown Timer Socket, USB Timer, USB Charger Timer, USB Timer Socket
NINGBO COWELL ELECTRONICS & TECHNOLOGY CO., LTD , https://www.cowellsockets.com