| 1. | Lastly , the whole structure is defined . chapter five involves the hardware realization . the host computer basic circuit , the keyboard and the display circuit , the signal inspection circuit , and the a / d conversion circuit are introduced
第五章是关于系统的硬件电路实现，包括主机基本电路设计，键盘显示部分电路设计及信号检测、 a d转换电路设计等。 |
