Mainly related to Apple's research on multi-touch technology for the touchpad of its MACBOOK a long time ago, and has applied for a patent.
Other laptops now touch at most two points, and their performance is also very average. Apple computers can touch at four points, all of which are patents. . . A touch screen will have many patents in hardware design, materials used, circuit work and so on. If other companies want to use it, they must buy the right to use it from Apple one by one, and some patented projects will not be authorized by Apple.
The modules in hardware need to have machine language design, that is, software. However, they are all for driving the basic hardware of this hardware, and have nothing to do with the software in the device operating system. What users can see at most is the touchpad and the interface software of the system.
The time difference is determined by the machine performance and operating system, and has nothing to do with the sensitivity of the touch screen itself. In fact, Android is better than iphone3GS, and the touch screen is actually related to the user's adaptation.