On the morning of December 25, news from the foreign media 9to5mac stated that Google recently dug away several chip engineers from Apple. This seems to imply that Google also seems to want Apple to design and manufacture its own chips. The name of John Bruno appeared in the chip engineers dug by Google. According to the existing information, he worked for Apple for 5 years. Since 2012, he has been engaged in the development of chip architecture, and he has established and managed Apple's "Semiconductor Competition Analysis." The task of the group is to make Apple the leading company in terms of chip performance. More than Bruno, in the past year, several chip engineers have left from Apple to Google and some from Qualcomm. The average user is quite strange to these people because they are working in the background. These personnel changes reflect what Google is going to do. As we all know, Apple has been designing its own chips since 2010. Nowadays, Apple's A-series chips have taken the lead in mobile devices. Google seems to follow this successful experience and prepare its own chips for its Pixel series smartphones. Chip making is not a simple matter. At the initial stage, its input and output are completely incomparable. Only Huawei and Xiaomi are similar in domestic manufacturers. Among them, Huawei's Kirin series chips have been used on their own high-end mobile phones. , Also added the machine learning elements, and millet is still in its infancy, currently only a low-end mobile phone equipped with its own chip. Google’s asset mobile phone was initially branded. At that time, it was also called the “nexus†series. Each year, it was jointly created with a mobile phone manufacturer. HTC, Asus, and LG were all not included in the list. Since last year, Google has renamed its mobile phone as Pixel. At the press conference, it no longer mentions the names of its partners, but instead emphasizes that it is a self-manufactured mobile phone. They are also increasingly participating in the Pixel series. In the research and development, I hope to control from the hardware to the software. This is one of the secrets of the iPhone's success. Incremental Encoder is commonly used, and Absolute Encoder is used if there are strict requirements on position and zero position. Servo system should be analyzed in detail, depending on the application situation. Commonly used incremental encoder for speed measurement, which can be used for infinite accumulation measurement; Absolute encoder is used for position measurement, and the position is unique (single or multiple turns). Finally, it depends on the application situation and the purpose and requirements to be realized. Incremental Linear Encoders,Linear Optical Encoder,Linear Position Encoder,Encoder Bearing Tester Yuheng Optics Co., Ltd.(Changchun) , https://www.yuhengcoder.com