智能手機傳感器的數據端口解決方案

　　智能手機正在成為普及的計算和通信平臺。隨著每一代新一代智能手機在執行過程和數據密集型應用程序，一旦需要電腦或專用設備得到更好的。現代的多核和多核處理器正在使用幾年前所需功率的一小部分來完成實時任務。

　　智能手機正在取代離散的手持儀器在相同的方式，個人電腦和筆記本電腦取代大，笨重，更昂貴的設備成為了用戶界面和流程引擎。在這種情況下，更好的和更快的數據端口之間的插件，插件，或無線傳感器/傳感器是必要的。

　　本文探討了常見的智能手機數據端口，并介紹了如何在工程師可以使用這些解決方案，連接各種傳感器和外設，利用，根據需要，智能手機作為一個高清晰度顯示，觸摸屏，過程引擎，并鏈接到云。

　　In the beginning

　　Early computers used handy serial ports like RS-232 as a de facto standard for linking peripherals and terminals as well as for computer-to-computer connection. Printers， plotters， programmers， in-circuit emulators， and all sorts of common and specialty tools took advantage of serial ports to allow easy and universal connectivity. However， while the popular UART-based RS-232 ports are no longer available on smartphones， serial connectivity is still one way in. The lowest cost and simplest I/O link solution is the audio-in and audio-out ports， which are accessible using a small stereo in/out audio jack. Plugging into a headphone jack for example， provides two （stereo 44.1 KHz） audio outputs， which are capable of reliably passing two independent MODEM streams of data very long distances using low-cost， twisted pair or shielded cables.