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在桌上型或便携式系统上使用MicroSolutions公司的Backpack8信速CD—ROM驱动器可增加多媒体能力．这种驱动器可直接插入计算机的并行端口，并带有一个16位的声卡．其数传车在加强到并行端口（EPP）上可达到1．2Mb/s，该驱动辞典型存取时间为250ms，并带有128Kb的高速缓冲存储器
Use MicroSolutions’ Backpack8 letter-speed CD-ROM drive on your desktop or portable system to add multimedia capabilities. This drive plugs directly into the computer’s parallel port and comes with a 16-bit sound card. The number of cars in the enhanced parallel port (EPP) up to 1.2Mb / s, the drive dictionary access time of 250ms, and with 128Kb of cache