其内部主要由DMA控制器(82c37)、中断控制器(82c59)、可编程间隔计时器(82c54)，DRAM刷新控制器，等待状态产生器，系统重置电路组成。
It is mainly composed of DMA controller (82c37), interrupt controller (82c59), programmable interval timers (82c54), DRAM refresh control, wait state generator and system reset logic.
脉冲宽度计算电路根据被点亮的显示单元的数量，以获得重置脉冲的脉冲宽度。
The pulse width calculating circuit acquires the width of the reset pulse according to the number of the lightened display units.
本发明揭示了一种使用者操作阻断装与方法，包括重置单元、侦测单元、逻辑控制电路以及开关元件。
The invention is concerned with the user operating interdiction equipment and the method, including: the reset unit, the detecting unit, the logic controlling circuit and the switch component.
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