如何选择光驱产品? 首先谈谈光驱的工作原理。光盘和硬盘的工作方式有很大的不同,硬盘的盘片被分成许多同心圆,这些同心圆称为磁道,每个磁道又被分为若干扇区,文件被保存在这些扇区内。硬盘盘片总是以恒定的角速度旋转,称为CAV。但由于盘片具有一定的半径,造成扇区在盘片内外圈的疏密程 How to choose optical drive products? First of all, talk about the working principle of optical drive. There is a big difference between a disc and a hard disk. The disc of a hard disk is divided into many concentric circles. These concentric circles are called tracks. Each track is divided into sectors. The files are stored in these sectors. Hard disk platters are always rotated at a constant angular velocity, called CAV. However, due to the disc has a certain radius, causing the sector in the disc inner and outer ring sparse process