在电子计算机外存储设备中,硬盘机、软盘机一直占据着重要地位,其产量和销量不断稳步增长。固态盘是近几年迅速发展起来的以半导体存储器为基础的新型外存储设备。因其具有速度快、体积小、功耗低、无机械运动部件、抗恶劣环境能力强等优点而得到了越来越广泛的应用,正逐渐成为主要的外存储设备之一。 In the electronic computer storage devices, hard disk drives, floppy disk drive has been occupying an important position, its production and sales continued steady growth. Solid state disk is the rapid development in recent years to the semiconductor memory-based new type of external storage devices. Because of its advantages of fast speed, small size, low power consumption, no mechanical moving parts and strong resistance to harsh environment, it has become more and more widely used and is gradually becoming one of the major external storage devices.