1.If you are bit serious about the electronics hobby I recommend learning the “color code”.如果你对电子技术感兴趣，建议学会“彩色条形码”的电阻识别方法1.resistors are used to limit current flowing to a device ,thereby preventing it from burning out, asvoltage dividers to reduce voltage for other circuits, as transistor biasing circuits, and to serve as circuit loads.电阻常用作限电流器件，限制流过元器件的电流，防止烧坏器件，电阻也可以用作分压器，以减少其他电路电压，还可以用在晶体管偏置电路中作为负载。
2. A capacitor will block DC current, but appears to pass AC current by charging anddischarging.电容可以阻隔直流，但能通过充放电的方式通交流3. A powered iron core in the shape of a cylinder may be adjusted in and out of the core to varythe inductance.一个强磁的固定圆柱铁芯，可以通过调节进入线圈，或从线圈中出来，来改变电感4.The input voltage is to the primary winding and the induced voltage is taken off the secondarywinding.输入电压加在原线阻上，则副绕线阻两端输出感应电压。
5.At any node of circuits, at every instant of time ,the sum of the currents into the node is equalto the sum of the sum of the currents out of node .对于电路的任何一个节点，在每一瞬间时流入节点的电流总和等于节点流出电流之和6.Suppose that u(t)=1V ,Then the electric directly proportional is 1V above the potential at thebottom.假设U（t）=1V；则材料顶部的电势比材料底部的电势高1V7. A bus is a collection of wires on which electrical signals pass between components in thesystem.总线是指一组在系统各个部件之间传递各种信号的导线8.Less power is required to transmit high frequencies than low frequencies ; therefore, it is moreefficient to transmit high frequencies containing over great distances.传递高频信号要比传递低频信号消耗功率小，所以远距离传送包含信息的高频信号的效率比较高。
9.An AM signal as seen on an oscilloscope will show modulation peaks and modulation valleys.在示波器中可以看到的一个调幅信号有调制峰值和调制谷值10.Furthermore suppose that circuit A contains no dependent source that is dependent onvariable in circuit B , and vice versa.此外，假设不含受控源电路A是依赖于电路B变量，反之亦然。
在假设电路A部分中没有受电路B部分中的变量控制的受控电源，反过来也一样11.A register is a group of flip-flop capable of storing one bit of information. The flip-flop hold thebinary information and the gates control when and how new information is transferred into the register.一个寄存器是一组触发器，每个触发器能存储一个二进制信息。
触发器保存二进制信息，门电路控制何时把新信息送入寄存器。
12.A ripple counter contains a chain of flip-flips with the output of each one feeding the input ofthe next.一个异步记数器中包含若干个触发器，每个触发器的输出端与下一个触发器的输入端连接13.The main memory is a relatively large and fast memory used to store programs and dataduring the computer operation.主存储器是一个比较大的和快速的存储器用来存储程序和数据的计算机操作期间。
主存是一个相当大而且速度极快的存储器，用来存储CPU操作使能程序和数据。
14. A signal in this context can represent a number of different things.在这种情况下，一个信号可以表示许多不同的东西。
15.Like a general-purpose microprocessor, a DSP is programmable device, with its own nativeinstruction code.像一个通用微处理器，DSP是一种可编程器件，具有其自己的本地指令代码。
16.Every conductor has a capacitance, inductance,and frequency-dependent resistance.每个电阻，电容，电感都有其频率相关性和阻抗特性。
17.A bitmap is constituted of rows of pixels, contraction of words" picture Element ”.位图由一行行的像素组成，像素是“图像元素”的缩写18.In other words, an image is an enormous two-dimensional array of color values, pixels, eachof them coded on 3 bytes, representing the three primary colors.这就是说，一幅图像是一个巨大的二维颜色阵列。
而每个像素都被编码成3个字节，代表三原色。
19.To obtain the voltage uoc-called the open-circuit voltage between nodes a and b. This voltageis Uoc.求开路端电压Uoc的方法是从电路A旁边一走路B,求出节点a和b之间的电压就是Uoc20.Suppose we are given an arbitrary circuit containing any or of the following elements resistors ,voltage sources , current sources.假设给定的任意电路中含有若干个下列元件：电阻，电压源，电流源。
21.The binary system is the primary language of the computer.二进制是计算机的基本语言。
22.Individual logic gates can stand-alone , if only a single logic function is needed , or they can becombined with other gates for more complex operations.单个逻辑门在只需单独逻辑功能时可以单独使用，它们也可以与其他门组合，以实现更复杂的逻辑运算。
23.A register is a group of flip-flop capable of storing one bit of information.一个寄存器是一组触发器，每个触发器能存储一个二进制信息24.Logic , generally speaking , is the science of formal principles of reasoning.一般来说，逻辑学是按推理原则处理的科学。
25.When the computer finishes its operations on the information , the output is printed ordisplayed in number system other than decimal , and this too must be converted , this tine back to the decimal system.当计算机对所给的信息处理的信息完成后，输出的信息是以非十进制形式打印或显示出来的，因此这些输出信息也必须再转换，这次转换回十进制。
26.The clear input must be maintained at logic 1 during normal clocked operation.清除输出端在正常始终控制时必须保持逻辑127.A synchronous counter has complex internal structure to ensure that all its outputs changeprecisely together on each clock pulse .同步计数器具有复杂的内部结构，以保证所有的计数器输出都在同一脉冲输出时改变。
28.To the CPU, most I/o devices look like memory because the CPU can store data to an outputdevice and read data from an input device.对CPU而言，大量的输入\输出口就像存储器一样，因为CPU可以把数据存储在输出设备中，也可以在输入设备中读入数据29.The signal travel at such a rate that even distances of just a few centimeters cause timingproblems.信号的传输速度非常快，以至于信号线即使只有几厘米距离都有可能导致时间问题。