每种微处理机都具有三组总线，分别供数据、地址和控制信号使用。
Each standard microprocessing unit creates three buses: one each for data, address, and control.
比如，信号强度变化时，地址簿仍能访问。
For example, the address book can be accessed while the signal strength changes.
比如，信号强度变化时，地址簿仍能访问。
For example, the address book can be accessed while the signal strength changes.
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