When designing your product, it’s crucial that you choose a memory technology that lets you update your firmware easily. Otherwise, you may have to scrap a lot of products if you find errors. If this happens after they've been shipped to end customers, the negative impacts will be severe.
Firmware is held in non-volatile memory such as ROM, EPROM or flash memory. Let’s take a closer look at one of them: flash memory, which enables device firmware updates (DFU) and the advantages that this gives.
随着越来越多的手机取消了3.5mm耳机接口和TWS蓝牙耳机的兴起，有线耳机也慢慢退出历史舞台。在街头、地铁、公交车、机场等地方经常看到不少朋友都带着无线耳机，没有了线材的束缚，日常出行和运动期间佩戴更舒适。
在无线耳机大行其道的大环境下，入手一款无线耳机也不稀奇了，有些朋友喜欢项圈式耳机，游戏朋友喜欢耳塞式，还有些朋友喜欢头戴耳罩式，不管哪款，适合自己的才是最好的，而对我来说，我比较喜欢项圈式，不仅有续航的原因，也有佩戴时方便的原因，更重要的是项圈式比较适合运动.