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电子学或数字(电子)电路是处理数字信号(模拟电平的分立频带)的电子学,而不是用于模拟电子学的连续范围。在一组值中的所有级别表示相同的信息状态。由于这种离散化,制造信号衰减或噪声而对模拟信号电平的影响相对较小,不会离开离散的包络,因而被信号状态检测电路忽略。在大多数情况下,这些状态的数目是两个,它们由两个电压带表示:一个接近参考值(通常称为“接地”或零伏特),另一个是接近电源电压的值。这些分别对应布尔域的错误值和真值。数字电子技术是有用的,因为更容易使电子设备转换成已知状态中的一个,而不是精确地再现连续的值范围。
Electronics or digital (electronic) circuits are electronics that process digital signals (discrete bands of analog levels) rather than the continuous range used for analog electronics. All levels in a set of values represent the same message status. Because of this discretization, the effects of signal attenuation or noise on the analog signal level are relatively small and do not leave the discrete envelope and are therefore ignored by the signal state detection circuit. In most cases, the number of these states is two and they are represented by two voltage bands: one near the reference (commonly referred to as “ground” or zero volts) and the other as a value close to the supply voltage. These correspond to Boolean errors and truth values, respectively. Digital electronics are useful because it makes it easier to convert an electronic device into one of the known states, rather than accurately reproducing a continuous range of values.