Incremental encoders provide speed, direction and relative position feedback by generating a stream of binary pulses proportional to the rotation of a motor or driven shaft. Lander offers both optical and magnetic incremental encoders in 4 mounting options: shafted with coupling, hollow-shaft, hub-shaft or bearingless. Single channel incremental encoders can measure speed which dual channel or quadrature encoders (AB) can interpret direction based on the phase relationship between the 2 channels. Indexed quadrature encoders (ABZ) are also available for homing location are startup.
Incremental Encoder,6Mm Solid Shaft Encoder,Hollow Rotary Encoder,Elevator Door Encoder Jilin Lander Intelligent Technology Co., Ltd , https://www.jilinlandertech.com
The youtube website on Google’s homepage had a 30-second advertisement that could be selectively turned off within a few seconds. Now it is closer to the people, and it plans to stop 30 seconds of compulsory advertising in 2018. Domestic video websites and youtube are video websites. The difference is so great! 
Google’s statement: “We are focused on providing online users with a better advertising experience. As part of this, we have decided that since 2018 we will no longer support 30-second ads that cannot be skipped, and we will focus on generating favorable results for users and The mode of the advertiser." 
Although video site advertising is the main source of revenue, the problem is that VIPs also have advertisements when placing so many ads and then letting everyone buy VIPs.
How do you see the domestic video advertising is too long and the advertisement is ugly? Welcome to leave a message.
Video ads
Look at a popular video of a minute or two, like to watch two minutes of advertising, a longer video, beginning to read, and also to insert a section of advertising in the middle, 30 seconds of advertising are all thank him, hey, domestic Internet users really Deep in the heat.
Youtube ad
When Beijing time was 18 February, Google announced a news that Google was adjusting the advertising model of video services to do shorter and more interactive advertisements, that is, closer ads.
Youtube video ad
However, youtube's 6-second video "buffer" ads can not be skipped, there are some 15 seconds of not announced, but this is also a big surprise, to tell the truth, Google ads are also very interesting, very creative, not Like the domestic, it is either a game, or a travel, or a medicine.
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