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The QAM modulation based on single chip computer and A/D converter is finally presented.

最后分析了采用单片机和D/A变换器实现的QAM调制解调方法。

Chip in 出钱 goingWe all chipped in to buy Jennifer a going-away present.

大家都出钱买一个送别礼物给 Jennifer。

First release of static electricity was to find a bad motherboard and has the same type of motherboard, two were pulled out of the motherboard BIOS chip, and then the BIOS will be a good motherboard BIOS chip socket plug, the attention can not be inserted too tightly, as long as the primer can just come into contact with pin sockets can be.

首先放掉身上的静电，找到一台与已坏主板相同型号的主板，分别拔出两块主板的BIOS芯片，然后将好主板的BIOS芯片插回BIOS插座，注意不能插得太紧，只要引脚能刚刚接触到插座即可。

Chip multiprocessors, also known as multi-core computing, involves more than one processor placed on a single chip and can be thought of the most extreme form of tightly-coupled multiprocessing.

芯片多处理器，也被称为多核心计算，涉及到多个处理器放在一个单一的芯片，可以被认为是最极端形式的紧密耦合多处理。

The CPU of most microprocessor-based protection device for the present is 16 bit Single Chip Micyoco, because of the slow speed, it is hard for the Single Chip Micyoco to relize the complex arithmetic and higher sampling.

目前运行的微机保护装置的CPU大多为16位单片机，由于单片机受到运算速度等因素的影响，不易实现更复杂的算法和更高的采样率。

The CPU of most microprocessor-based protection device for the present is 16 bit Single Chip Micyoco, because of the slow speed, it is hard for the Single Chip Micyoco to relize the complex arithmetic and higher sampling.

目前运行的微机保护装置的CPU大多为16位单片机，由于单片机由于受到运算速度等因素的影响，不易实现更复杂的算法和更高的采样率。

Finally, took AT89S52 as the core, Designed contains the integration voltage-stabilizer circuit, the clock electric circuit, repositions the electric circuit, the liquid crystal display and the control circuit, ISP in-system programmable devices, the RS232 serial communication electric circuit in the system, the switching circuit, LED display circuit chip and the ISD2590 pronunciation chip recording/broadcast electric circuit and so on nine kind of periphery electric circuits, and compiles for the integrity schematic diagram.

最后，以AT89S52为核心，设计出包含集成稳压电路、时钟电路、复位电路、液晶显示与控制电路、ISP在系统可编程器、RS232串行通信电路、开关电路、发光二极管显示电路和ISD2560语音芯片的录音/播放电路等九种外围电路，并汇总为完整的原理图。

To this end, the use of MCS-51 series AT89C51 single-chip device designed as the central traffic light control circuit, with a total of cathode seventh time the digital display module, the traffic light display module, transfer module, crystal oscillator circuit, reset circuit and control circuit 8051 in accordance with the actual traffic flow through the port P3 chip set red, green and double-time to kindle a digital countdown display,The turn of the three colors of lights and emergency lighting in case of interruption of processing.

为此，采用MCS-51系列单片机AT89C51为中心器件来设计交通灯控制电路，配以七段共阴极数码管显示时间的显示模块，交通灯显示模块，调时模块，晶振电路，复位电路以及控制电路，实现根据实际车流量通过8051芯片的P3口设置红、绿灯燃亮时间以及双位数码管显示倒计时，三种颜色灯交替点亮以及紧急情况下的中断处理功能。

To this end, the use of MCS-51series AT89C51 single-chip device designed as the central trafficlight control circuit, with a total of cathode seventh time thedigital display module, the traffic light display module, transfermodule, crystal oscillator circuit, reset circuit and controlcircuit 8051 in accordance with the actual traffic flow through theport P3 chip set red, green and double-time to kindle a digitalcountdown display,The turn of the three colors of lights andemergency lighting in case of interruption of processing.

为此，采用MCS-51系列单片机AT89C51为中心器件来设计交通灯控制电路，配以七段共阴极数码管显示时间的显示模块，交通灯显示模块，调时模块，晶振电路，复位电路以及控制电路，实现根据实际车流量通过8051芯片的P3口设置红、绿灯燃亮时间以及双位数码管显示倒计时，三种颜色灯交替点亮以及紧急情况下的中断处理功能。

Here, the large power voice circuit consisted of voice record/playback chip ISD1420, BTL power amplifier and loudspeaker. The single-chip computer received information from the main PLC and controled this part.

该环节利用语音存储/再生芯片ISD1420、BTL功率放大电路及扬声器构成大功率语音电路，由单片机根据主控PLC的命令进行发声控制。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。