System Time 系统时间，System Date 系统日期，Legacy Diskette 软盘驱动器，Primary Master 第一主驱动器，Primary Slave 第一从驱动器，Secondary Master 第二主驱动器，Secondary Slave 第二从驱动器，Keyboard Features 键盘特点，System Memory 系统内存，Extened Memory 扩展内存，advanced为高级设置。
速度是关键:With CCD sensors the charge is shifted pixel by pixel， in the CMOS sensor the charge of each pixel is directly converted to a voltage and read – making it noticeably faster.
