Bluetooth vs Infrared (蓝牙技术和红外技术对比)
Just care about Bluetooth tech, the reason is simeple - I bought a laptop with Bluetooth interface. What is it? Why it? How it? I heard Infrared before, why we need Bluetooth ?What the differences between Bluetooth and Infrared ?
I searched on internet, somebody else have already gave good answers for my questions:
1: What is [...]
