这些测试模式可用于其它同类拨号电路的测试，并对数模混合电路的测试提供了参考。
This testing module can also be applied to other kind of dialing IC, and provides references to testing Digital-Analog mixed IC.
介绍了一种失常生物信号紧急自动拨号报警装置的硬件电路、软件编程和系统整体调试。
A new emergency automatic dialing alarm system for abnormal biological signals is introduced here, including hardware circuit, software procedure and integrated debugging.
本文提出利用单片机实现自动拨号的方案，并给出了详细的电路设计方法。
This paper presents a scheme that a monolithic computer is used for auto-dialing. The circuit design method is given in detail. It is suited to warning equipment for household, office and storehouse.
在这里概述的题目包括点对点链路，电路交换，分组包交换，虚电路，拨号服务，和WAN设备。
Topics summarized here include point-to-point links, circuit switching, packet switching, virtual circuits, dialup services, and WAN devices.
硬件部分以单片机at89c51为控制核心，包括自动拨号、检测、报警和放音等电路。
The hardware is made up of automatic dialing, testing, alarming and playing, which is controlled by AT89C51 single chip microcomputer.
用按键或按钮代替旋转式拨号盘，产生一个数字序列以建立电路连接的方法。
The use of keys or push-buttons instead of a rotary dial to generate a sequence of digits to establish a circuit connection.
用按键或按钮代替旋转式拨号盘，产生一个数字序列以建立电路连接的方法。
The use of keys or push-buttons instead of a rotary dial to generate a sequence of digits to establish a circuit connection.
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