Every day, visiting Aunt Zhang has also been visiting for some years.
By starting with the Amazon's latest entry-level Kindle 558, also specifically asked my colleagues to take care of a good Kindle 3 to do the next comparison
(Mobile phone slag quality warning -.-)
Scheduled three days in advance, was originally expected to ship on the 20th, delivery on the 21st, did not expect 19 on the evening to receive delivery SMS, 20 was lying in the office early in the morning
First of all, Amazon ancestry kraft paper bag packaging
Open up and reveal the recently updated Kindle blue box
On the back, the features are all identified. The memory upgrade from 256 of the original 499 models to 512 has not been written out.
Seal release!
A card is still a bit amazing, the border is narrower than the previous generation 499, but how to bring the data line to the mess lying in the box, obsessive-compulsive disorder can not be tolerated!
Initial boot screen
The back is flat, the edge feels more like the current ipad, the grip is a bit sleek, a bit slippery! ! !
Wifi shared to Amazon -. - The people who do not know the truth say that they are not checked
It's not as long as the iphone 6. If it's wide, the boys can master it. The girls can't catch it.
Dictionary function is very easy to use! Where will not turn where
Inside the machine, it's okay to close the advertisement. (The first time you started the Kindle, you used to hear that you need to find a customer to close the advertisement.)
------------------------------------------------ The following is Kindle 3 Comparison ----------------------------------------------
At the same time open the national comics: Slam Dunk
Compared to the following: Kindle 3 graphics display is better than 558, 558 reading books to see the comic color is a bit too deep, see a little loss of detail
Many years ago the Kindle 3 and the current 558 are comparable in thickness!
Finally, summarize the advantages and disadvantages of the 558:
advantage:
Invincible price/performance, the Kindle is the most affordable one;
Compared with the previous 449 to be more light and thin, the border is also narrow, personally feel that the value of the face has become higher;
Now that the price of a physical book is between 20 and 30, I don't think I usually read 20 books after reading a book. I think it is a habit of reading.
Disadvantages:
After the light and thin, the relative sacrifice is a certain feel, the border is very rounded, one hand holding very slippery! ! !
The entry money is old, there is no backlight, and at home the first time I use it under the lamp at night, it's so dark. -
In conclusion:
Books are valuable and knowledge is priceless. I hope everyone has their own reading habits. Thank you.
AAWG WDM - Athermal Arrayed Waveguide Gratings Wavelength Division Multiplex
There are currently three types of DWDM technologies developed in the industry, which are based on AWG, TFF and FBG technologies. AWG is a planar waveguide device, which is an arrayed waveguide grating made on a chip substrate using PLC technology. Compared with FBG and TTF, AWG has the advantages of high integration, large number of channels, low insertion loss, and easy mass automated production.
The Athermal AWG module is based on the arrayed waveguide grating technology and does not require additional power supply or temperature control. It is a pure passive module. It has the characteristics of low loss and polarization-related loss, low crosstalk, etc., and has good stability in the operating temperature range of -40°C to 85°C.
With the vigorous development of 5G, users will have higher and higher requirements for bandwidth. Operators will need to continuously increase data transmission rates, increase transmission capacity, and reduce operating costs. Among them, the active WDM-PON solution is difficult to deploy on a large scale due to its high cost; while the passive WDM-PON will have more application space due to its advantages of low cost, no power supply, and easy installation. Among them, the non-thermal AWG will be more widely used because of its larger number of channels, denser channel spacing, and no need to rely on power supply or temperature control.
Athermal AWG WDM, also known as Athermal Arrayed Waveguide Grating WDM and AAWG WDM Splitter, along with FBT WDM splitter, LAN WDM splitter, Filter WDM splitter, dense WDM splitter and coarse WDM splitter, are the most commonly used WDM device in construction of PON.
Athermal AWG WDM, Athermal Arrayed Waveguide Grating WDM, AAWG WDM Splitter
Shenzhen GL-COM Technology CO.,LTD. , https://www.szglcom.com