Keywords: Type-C is a common standard in the industry.
The first thing to do is to give the apple a proper name. In fact, this Type-C interface Apple notebook is not willful at all. Compared with before, Apple is independent of the universal standard of the entire Micro USB. In fact, this Type-C standard was put forward by Apple, Google, Intel and Microsoft. According to the current trend of mobile terminals, the USB-IF Association will be formulated by many international manufacturers through consultation and discussion. The only thing that is slightly unique is that Apple doesn't arrange a traditional interface too much.
▲ Although the popularity is average, Nokia N 1 is indeed the first to support Type-C.
In addition to Apple, other mobile manufacturers are also quietly using the Type-C interface, such as the Nokia N 1 tablet launched last year. However, at that time, Nokia's interface did not support USB 3. 1 specification, and the product itself did not pay much attention, which failed to achieve the fiery effect of Macbook 12. At the same time, there are pictures coming out in the late Spring Festival this year, and the second generation one plus mobile phone will also use the Type-C data cable. So now, perhaps starting from Apple's Macbook 12, Type-C will enter a new era.
There are so many kinds of USB.
Then again, since Google, Apple, Microsoft and Intel are all joint names, and there will be so many products coming out one after another, there must be reasons why it is imperative. What are the advantages of the Type-C interface compared with the Type-A interface and USB interface commonly used in traditional mobile phones? This has to be said one by one.
Keywords: double-sided pluggable
Type-C interface was originally published by USB3. 1 standard. As a device for manufacturers to catch up with the Lightning Dock interface, the most obvious advantage of Type-C is that it can be plugged on both sides. In the face of "mobile phone connecting data cable, you need to plug it in first, which may be wrong;" Once again, I found that the first time was right; Finally, I came back and aimed at the stalk like "Cai OK" in the first way. Obviously, the most obvious advantage of the new interface is that it can be plugged on both sides.
Keywords: data exchange/driving high-power equipment
▲ The earliest Micro USB interface.
In addition, let's analyze the shapes of the two ends of the previous Micro USB. It is not difficult to see the color description of the Pin name line from the picture. 1V bus red (red) power supply is positive 5V2D, white (white) data line is negative 3D+ green (green) data line is positive 4IDnone (none), and it is divided into two interfaces: ground wire; B: ungrounded; 5GNDBlack (black) signal ground wire. As an early serial communication interface, Mirco USB is only responsible for charging and data transmission between intelligent devices, and it is impossible to exchange data with peripheral devices without specific design.
In fact, it is not difficult to see clues from the early development of smart phones. If the time goes back to two years ago, most of the USB interfaces of Android phones can't transmit OTG data, because USB flash drives obviously don't belong to intelligent running devices. Fortunately, one of the advantages of Micro USB is "expansibility". Through the redesign of the pins, the basic functions can be extended.
▲ Notebooks or PCs are relatively large, and the previous interfaces have little impact.
Next, we place a set of C-pin diagrams in a very traditional way. In addition to the most traditional current and data exchange, the new pin can also use USB bus to transmit audio, video and PCI-E, which is part of the reason why Apple dares to adopt the interface on Macbook 12.
▲ This pin has more functions and can support up to 100W power.
▲ Detail map analysis
Keywords: USB 3. 1 high-speed transmission
Actually, there is no Apple notebook this year. Nodes based on USB technology will be the year when Type-C is officially promoted. At this year's CES, this new standard USB interface has climbed many household consumer electronic devices. In addition to the versatility and convenience mentioned above, the transmission speed of USB 3. 1 has actually become an advantage of Type-C.
▲ Measured transmission speed
On the exhibition platform of this exhibition, some media have tested the motherboard equipped with USB 3. 1 Type-C interface on the spot. The actual measurement shows that it can run out of the ultra-high reading and writing speed of 650-700 MB/s. In contrast, the transmission rate of USB 3.0, which is relatively stable at present, is only about 200-300MB per second, and the gap between before and after is clear.
After reading so much data, you may feel dizzy. Let's summarize the advantages of Type-C first. On the one hand, the brand-new interface can be inserted on both sides; In addition, the interface is compatible and extensible, and the transmission of non-intelligent devices can be completed without modification; Supporting high voltage can provide up to 100W power, which is why Micro USB can't be used for notebook charging before. Full support for USB 3. 1, faster transmission rate.
From this, it is not difficult for us to sort out the blind spots of the previous concepts:
1: Type-C is not a patent of Apple, and will become a common interface between Android phones and Windows laptops in the future.
2. In view of the high voltage of Type-C, the charging plugs of notebook computers and mobile phones are finally expected to be unified in the future.
3. Although USB 3. 1 has appeared in a large number of Type-C interfaces, USB 2.0 can also be applied to Type-C; At the same time, the current Micro USB can also successfully upgrade the transmission rate of USB 3. 1.
▲ Portable and thin mobile devices will accelerate the development of highly integrated components.
Of course, although there are so many advantages, it is inevitable that the old and new specifications will go into battle in the era of a large number of equipment replacement interfaces. So in the foreseeable future 1, 2, 3 years, you may need to bring all kinds of data lines when you go out to work. In addition, adapter manufacturers may usher in their own spring in the future, which is another story.