硬件上详细给出了系统主要功能模块的工作原理和设计内容，包括模拟信号输入电路、数字信号输入输出电路、看门狗及系统复位电路等。
On the hardware design we provide the operation principle of the main function module and design content in detail, including Analog Inputting, Digital Inputting and Outputting, Watchdog, etc.
或者换句话说，脉宽调制是一种调制技术，为发电可变脉冲宽度为代表的幅值输入模拟信号或波。
In other words, pulse width modulation is a modulation technique for generating variable width pulses to represent the amplitude of an input analog signal or wave.
输入模拟信号立即与所有的参考电压通过一串高速比较器进行比较，高速比较器用于产生二进制输出。
The analog signal is compared with all the reference voltages at once by a string of high-speed comparators whose outputs are used to generate the binary output.
在输入模拟信号中加入白噪声，即抖动，可以降低量化噪声。
Dithering, which adds white noise to the input analog signals, may be used to reduce quantization noise.
数据采集卡是一种把外界模拟信号转换成数字信号，并把数字信号输入到计算机系统的一种AD接口卡。
Data acquisition card is the AD interface card, which converts the analogy signal to the digital signal, and transfers the digital signal to the computer.
随着电子技术的飞速发展，模拟信号的调整电路可以通过超量化输入信号，并且利用DSP调整增益和偏置的方法来实现。
According to the high-speed development of electronic technology, the adjust circuit of analog signal can be accomplished by the over quantization input signal and using DSP for gain and offset.
例如，输入传感器向信号转换器输入一个正确的模拟信号，但是错误的信号转换可能向CPU输入错误的数字信号。
For example, an input sensor may be feeding an accurate analog reading to a signal converter, but a faulty signal converter may be sending the CPU an inappropriate digital signal.
第一个问题是一个输入的模拟信号必须被重新表达为信号取样的序列，然后这些序列被转换成计算机的数字表达式。
The first problem was that an analog input signal had to be represented as a sequence of samples of the signal, which were then converted to the computer's numerical representation.
拨道系统的硬件部分为三个部分：对输入的模拟信号进行处理使信号的范围达到要求；
The hardware of the system is composed of three parts: dispose the analog signal to be in the right range;
激光功率调节既可以输入0到5V的模拟信号，也可以输入PWM信号用以控制激光功率的大小。
The laser power can be adjusted by entering either 0 to 5v analog signals or PWM signals.
激光功率调节既可以输入0到5V的模拟信号，也可以输入PWM信号用以控制激光功率的大小。
The laser power can be adjusted by entering either 0 to 5v analog signals or PWM signals.
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