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先把资料啥的放上来~
词汇
行列式 determinant 矩阵 matrix 线性方程组 linear equation
导数 derivative 方程 equation 微分 differential
积分 integral 微积分 calculus 复数 complex number/ complex function
排列 permutation 组合 combination 概率 probability
电源 current source 二极管 two-electrode valve
电路 circuit 充电/放电 charge/discharge
电流 current 放大器 amplifier 放大 amplify
电感 inductance 编码 coding 解码 de-coding
电极 electrode 半导体 semiconductor (element)
电荷 electric charge 导体 conductor 导线 wire
电压 voltage 真值表 truth table 同名端 dotted terminals
电阻 resistance 耦合 coupling 通路 channel
电容 electric capacity 主机 host machine 电场 electric field
直流电源 direct-current main 交流电源 alternating current power supply
算法 algorithm 载波 carrier wave 截止 cut-off
方波 square wave 正弦波 sine wave 触发器 trigger
振荡器 oscillator 波形图 oscillogram 反馈 feedback
功率 power 门电路 gate circuit ( and or not )
饱和区 saturation region 截止区 cut off region
amplitude/ frequency/ phase modulation
整流 rectification 滤波 filter 混频器 mixer
存储器 memory RAM random access memory
ROM read only memory CU Control Unit ME memory
I/O input/ output
原码 original code 补码 complement 反码 base-minus-one’s complement
正数 positive number 复数 negative number
队列 queue 线性表 linear list 串 string
树 tree 图 graph
连续信号 continuous signal 离散信号 discrete signal
周期信号 periodic signal
PCM pulse code modulation
HTTP is the abbreviation of hypertext transfer protocol, it is a protocol used to browse www on the Internet.
TCP/IP Transmission Control Protocol/Internet Protocol
CPU Central Processing Unit
URL Uniform Resource Locator
www World Wide Web
OSI Open System Interconnect Reference
physics data-link network transport session presentation application layer
通信系统的组成： source sender channel receiver sink
通原：
White noise: its power spectrum density is a constant, N0/2
First, I learned analog modulation and de-modulation. Analog signal is the signal that is continuous in time and amplitude. Analog modulation includes AM, FM and PM. They can help us move the frequency spectrum. It is helpful for us to send the signal and make full use of the frequency band.
source -> modulator -> channel -> de-modulator -> sink
As for digital modulation and de-modulation, I learned ASK, FSK and so on. OOK (On-Off Keying) is basic.
In China, we use PCM to make our voice signal from analog to digital, it includes sampling, quantization and coding. Quantization is the process that shifts the amplitude from continuous to discreet. In PCM, we use 8 binary numbers to express the signal.
Digital Communication数字通信
Compared with analog modulation, digital communication can resist more noise, control the error, easier to combine with the modern technology and have higher security.
The channel has its own capacity, which can be calculated by Shannon Equation.
Digital Signal Processing
We learned discrete Fourier Transform and fast Fourier Transform. FFT makes us reach the goal of lowering the amount of calculation, laying the foundation of digital system.
We also learned filters designed for IIR and FIR. For instance, Butterworth.
Fundamentals of electric circuits
We learned semiconductor, two-electrode valve, three-electrode valve.
Amplifying circuit
Operational amplifier运算放大器 can be used to do some calculation, for example, add, subtract, multiply and so on.
Schmitt trigger can be used to change the waveform (change the wave from sine to square), rectify the waveform and discriminate the amplitude.
Multi-vibrator 多谐振荡器 consists of gate circuit or Schmitt trigger. When it is charged by source, it can produce the signal without outward trigger signal.
电磁波
intensity of magnetization 磁感应强度
intensity of magnetic field 磁场强度
intensity of electric field 电场强度
conduction current 传导电流
displacement current 位移电流
divergence 散度 rotation 旋度 gradient 梯度
adder 加法器 subtracter 减法器 multiplier 乘法器
resonance 谐振
编程语言 programming language
汇编 assemble language VHDL C++
Compared with C or C++, assemble language doesn’t have universal property and transportability. It means the assemble language used on a computer might not be transfer to another type of computer.
C++ is an object-oriented programming language.
VHDL: hardware description language
A total VHDL program includes entity, architecture, configuration, package and library.
微机原理与接口技术
We learned how the microcomputer composes and works, basic assemble language, interface techniques.
CPU Central processing unit is the core of a microcomputer. In this course we learned 8086/8088, BIU is in charge of all the outward work and EU is in charge of executing the order.
Computer consists of CPU, memory, input/output and system bus.
Computer system consists of computer, software and hardware. Hardware includes keyboard, display, printer and so forth.
Some other chips, like 8259A (interrupt controller), 8255A (parallel communication interface)…
通信电子电路
Communication system means the system that can transport the information.
In this course, we learned how the signal produces, how the high-frequency signal amplifies, how the signal changes frequency and some feedback control circuit.
In a high-frequency circuit, the basic elements are capacity, inductance, resistance, two/three-electrode valve.
short circuit 短路 open circuit 断路
Capacity: cut off the direct current and pass through the alternating current
PLL (phase lock loop) is a automatic control circuit that could realize frequency track.
Microwave Engineering
equivalent circuit 等效电路 transmission line 传输线
telegraphic equation 电报方程
unit 单位 node 节点 |
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发表于 2011-10-13 07:59:31
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