随着市场上数码周边外设产品的日渐丰富,人们对这些周边外设与计算机之间的传输速度有了新的要求。在这一前提下,计算机传统的并行端口不能够满足像数码图片、运动画面以及声音文件那样的海量数据在短时问内传送的要求;而对图像文件特别是运动图像来说,USB接口传送数据的速度也并不能算是十分的理想。因此,一 With the increasingly rich digital peripheral peripheral products on the market, people have new requirements for the transmission speed between these peripheral peripherals and computers. Under this premise, the computer’s traditional parallel port can not meet the requirement of transmitting massive data such as digital pictures, moving pictures and sound files in a short period of time. For the image files, especially the moving images, the USB interface transmits The speed of the data can not be considered very ideal. So, one