Not long ago, Apple released a new MacBook Pro with only one Thunderblot interface, and also removed the SD card slot, which made many users crazy. It should have been expected that Apple has explained a lot of the decisions behind it and is confident in this choice, although the user may not agree. In an interview with the Independent, Apple executive Phil Schiller said that the reason for removing the SD card slot is that it is a burden, and the wireless transmission technology on the camera is already a good alternative. His original words are: "There are several reasons. First, it is very cumbersome, always half-out (not good-looking). And there is a very good USB card reader on the market, you can also use the SD card. This problem is difficult to solve, choose SD card slot Because many cameras use SD cards, but we can only choose one, which needs to be weighed. In addition, more and more cameras are beginning to use wireless transmission, and it has proved to be very useful. So, we have taken a step further and let consumption Use a card reader or wireless transmission." Of course, many photographers may not agree with him. Although wireless transmissions are getting better and better, they are often cumbersome to use and slower than SD card transmission. In the professional field, speed and reliability are the most important, and Apple's choice is not satisfactory. When asked about the traditional headphone jack on the new MacBook Pro, but using new technology on the iPhone 7, this is a contradiction, Schiller said, professionals have many other audio devices without wireless capabilities, so the traditional interface is very necessary. "If it's just for headphones, it's really not necessary, wireless headphones are a good choice." In a later interview, Schiller went on to talk about the new MacBook Pro. He said he was surprised by the criticism of the outside world, but using the Thunderbolt interface is a bold decision, and Apple will help users "get through" these changes. As for how to help, it should be to buy accessories.
Rotary Switches
The Rotary Switches, different with Key Switches, Metal Switches, Toggle Switches and Automotive Switches, is mainly installed on liquid and gas pipelines to regulate the flow and pressure of liquids and gases. When used, turn the handle to drive the adjusting nut to rotate, and connect the left-hand thread of the valve through the left-hand thread. Drive the valve to move right or left to change the cross-sectional area of the right hole passage in the valve body cavity, so as to adjust the liquid and gas in the upper outlet pipe.
The Electrical Rotary Switch is a switch that controls the opening and closing of the main contact by rotating the handle.There are two types of rotary switches, namely a unipolar unit structure and a multi-pole multi-position structure. Unipolar unit rotary switches are often used in conjunction with rotary potentiometers in applications, while multi-pole multi-position rotary switches are often used for switching of operating line.
Multi Position Rotary Switch, because of its use, the overall use of sealed structure, there is a certain degree of waterproof effect, the basic can reach the IP67 waterproof level.At the same time need to use a more rigid and durable metal material, there are two or three files in the gear difference.
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