What is Industrial DTU? Industrial DTU characteristics and application field analysis Industrial Dtu,Industrial 4G Dtu,Industrial 2G 3G Module 4G Dtu,4G Industrial Modem Dtu Shenzhen MovingComm Technology Co., Ltd. , https://www.mcrouters.com
Insiders pointed out that the sale of Yahoo may help Yahoo CEO Carol Bartz to recover the losses suffered by shareholders since she took office in January 2009. Thornburg investment management company said that although Yahoo's revenue has dropped continuously in the past two years, Yahoo's investment in Alibaba and Yahoo Japan may account for more than 44% of Yahoo's own market value.
Yahoo's market value has reached 80 billion US dollars. According to EMarketer, a market research company, Yahoo’s share in the US online advertising market will decline from 16% in 2009 to 9.7% in 2012. Google’s market share will increase to 45%, and Facebook’s online advertising market share will triple. 7.8%.
Scott Billeadeau, a fund manager at Fifth Third Asset Management in the United States, said that stock trading is its future growth potential. Yahoo is a brand, but it seems that it has not been able to increase the value of its brand.
What is DTU?
A Data Transfer unit (DTU) is a wireless terminal device that converts serial port data into IP data or IP data into serial port data over a wireless communication network.
Second, industrial DTU characteristics?
D220 is an industrial 4G DTU based on 4G wireless network, the product uses high-performance industrial embedded processor, real-time operating system as the software support platform, to ensure that the data link is smooth at any time, to provide users with high-speed, stable and reliable data transmission. It can be easily and quickly arranged in the industrial site, and can be used in harsh environments.
Hardware features:
Anti-interference design, suitable for harsh electromagnetic environment application requirements
Wide voltage power supply design, support DC5V-35V power input, built-in power reverse protection and overvoltage and overcurrent protection
The serial port can be a service serial port or a data serial port
Supports the many-to-many link configuration between the service serial port and the center
Select industrial-grade devices and optimize electromagnetic compatibility design to meet the requirements of harsh application environments
The D220 supports backward compatible 2G/3G network access based on 4G network.
Built-in hardware watchdog, regular detection mechanism, automatic resetting of abnormal equipment.
Complete industrial environment design requirements, all-metal structure, the whole machine has passed the strict electromagnetic compatibility test, CE certification
Software features:
Multi-center mode/Multi-backup mode (up to five multi-centers/backup centers)
Different serial ports can be used as maintenance or service serial ports, and different service serial ports can be connected to different multi-centers.
Multi-protocol upper development kit support (compatible with communication protocols of multiple DTU manufacturers, which can achieve seamless replacement of DTU)
Supports ICMP and LCP link detection technologies and keeps heartbeat alive, ensuring the stability and reliability of the network and communication
Supports local serial port upgrade and remote software upgrade
Supports TCP, UDP, DUTCP, DCUDP and other connection protocols
Supports multiple encryption modes to ensure secure data transmission
3. Application fields
D220 4G DTU conforms to industrial design, complete functions, stable transmission, widely used in environmental protection, water conservancy, meteorological industries; Industrial control field; Industry and special environment, oil and gas, heating industry, etc.
Yahoo's market value has shrunk by 91% in the past 10 years is only US$14 billion
According to the "San Francisco Chronicle," Yahoo's market value has fallen by 91% in the past 10 years because it has not stopped competitors like Google and Facebook from sucking away Internet users and advertising revenue. According to Bloomberg data, the current market value of Yahoo that refused Microsoft’s $47.5 billion acquisition three years ago is $14 billion.