模块设计有用户高级读写指令，极大地简化了应用系统对射频卡的操作；
The I/O module was also designed to provide high-level instruction set, which greatly simplified the I/O operation of RF IC cards.
但是所有这些MS -DOS应用程序都试图通过发送IN和OUT指令，读写设备内存以及处理来自硬件的中断来和硬件直接对话。
But all those MS-DOS applications were trying to talk directly to hardware by issuing in and OUT instructions, reading and writing device memory, and handling interrupts from the hardware.
由以89C51单片机为核心控制器的读写控制装置，实施指令操作，采取射频自动识别车号、车型，远距离电子标签卡收费。
The reader controlled by the single chip of 89C51 is able to identify automatically the number and style of the vehicles and charge with the long-distance electric tags by programmed operating orders.
由以89C51单片机为核心控制器的读写控制装置，实施指令操作，采取射频自动识别车号、车型，远距离电子标签卡收费。
The reader controlled by the single chip of 89C51 is able to identify automatically the number and style of the vehicles and charge with the long-distance electric tags by programmed operating orders.
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