怎么设置？？直接看图片吧，呵呵。使用的VIM命令是：

Verilog HDL是在C语言的基础上发展起来的，保留了C语言的结构特点。

• C语言由函数组成，Verilog由模块(module)组成
• C语言通过函数名及其端口变量实现调用，Verilog也通过模块名和端口变量实现调用
• C语言有主函数main()，Verilog的个module均等价，但必有一个顶层模块，包含芯片系统与外界的所有I/O信号
• C语言是顺序执行，而Verilog的所有module均并发执行
• C语言与Verilog语法相似

本书是一本有关专用集成电路（ASIC）的综合性和权威性书籍。书中叙述了VLSI系统设计的最新方法。利用商业化工具以及预先设计好的单元库已使得 ASIC设计成为速度最快、成本最低而且错误最少的一种IC设计方法，因而ASIC设计方法已迅速在工业界的各个应用领域得到推广。
　　 本书介绍了半定制和可编程的ASIC。在对每种ASIC类型的数字逻辑设计与物理特性的基本原理进行描述后，讨论了ASIC逻辑设计设计输入、逻辑综合、 仿真以及测试，并进一步讲述了相应的物理设计——划分、布图规划、布局以及布线。此外，本书对在ASIC设计中需要了解的各方面知识以及必需的工作都有详 尽叙述。
　　 本书可作为大学高年级和研究生教材，也是ASIC领域工程技术人员的理想参考书。

我的评论：学ASIC的经典教材了，看这本书才知道FPGA在IC中的地位。全书分为三部分：ASIC介绍、ASIC逻辑设计、ASIC物理设计。我还没看完，等全看完再多说吧，呵呵。

豆瓣链接：专用集成电路

这半年一直在补以前欠下的知识，但还是感觉落下什么，什么都不会，呵呵。这也许就是对自己掌握知识的不自信吧。还有就是冒着风险没学用Protel画PCB，而是坚持学的Allegro。Allegro的软件操作还是很有意思的，一看就是从UNIX工作站起源的软件，呵呵，处处体现着软件设计的巧妙(还不如说是奇怪的操作，呵呵)。

以后要坚持写博客了，不然工作了，就更没机会写博客了。以后的内容应该会以毕设为主了，Linux先放一边吧。还有三个月，就毕业了，奋斗吧。

相关链接：
1、陆川新片《南京！南京！》
2、刘烨：《南京！南京！》是我拍得最用心的电影

The simplest labels are V+ and V−. However, internal design and historical tradition have led to a variety of other labels being used. Also, V+ and V− may be confused with the + and − voltage inputs to ICs like op amps.

Sometimes one of the power supply pins will be referred to as ground. In digital logic, this is nearly always the negative pin; in analog integrated circuits, it is most likely to be a pin intermediate in voltage between the most positive and most negative pins ^{[citation needed]}.

Double subscript notation uses similar looking placeholders with subscripts. In that notation the subscripted letters denote two points.

History

V_CC (note: lower case is often used instead of subscript, e.g. "Vcc") is an electronics designation that refers to voltage from a power supply connected to the "collector" terminal of a bipolar transistor. In an NPN bipolar junction transistor, it would be +V_CC, while in a PNP transistor, it would be −V_CC. There is debate over the origins of the double letter subscript naming convention. One proposal is that it originated as an abbreviation of the supply voltage for a common collector amplifier with the other power supply names mimicking this fashion. Double letters may also have been used to clearly indicate that a power supply voltage is being referred to.

In general, double letter subscripts refer to power supply voltages. For example, V_EE refers to the "emitter" voltage as supplied by the power supply pin. In NMOS logic, V_SS refers to the "source" voltage, and V_DD is the "drain" voltage likewise.

Within a circuit, single letter subscripts refer to that voltage relative to ground; for example, V_C is the "collector" voltage relative to ground. Two different letters indicate the voltage between two terminals; for example: V_BE is the "base" to "emitter" voltage drop, while V_CE is the "collector" to "emitter" voltage.

Modern use

CMOS ICs have generally borrowed the NMOS convention of V_DD for positive and V_SS for negative despite the fact that both positive and negative supply rails actually go to source terminals (positive supply goes to PMOS sources, negative supply to NMOS sources). ICs using bipolar transistors have V_CC (positive) and V_EE (negative) power supply pins.

In single supply systems (e.g., most modern digital and analog circuits) the negative power supply pin is also commonly referred to as GND. In "split rail" supply systems (e.g., older analog circuits) positive, negative and ground power supply pins are used.

More advanced chips will often have pins carrying voltage levels for more specialized functions in or out of the chip and these are generally labeled with some abbreviation of their purpose. For example V_BUS for the 5 volt supply needed for a bus-powered USB device or V_ref for the reference voltage for an analog-to-digital converter.

命令查询

下载: 永中集成Office2007简体中文试用版

!! RXVT setting
URxvt.background:black
URxvt.foreground:gray60
URxvt.geometry: 90x25+180+200
URxvt.colorBD:yellow
URxvt.colorUL:green
URxvt.cursorColor:red3
URxvt.color0:black
URxvt.color1:red3
URxvt.color2:springgreen
URxvt.color3:wheat3
URxvt.color4:navy
URxvt.color5:magenta4
URxvt.color6:steelblue1
URxvt.color7:gray85
URxvt.color8:gray10
URxvt.color9:orangered2
URxvt.color10:chartreuse3
URxvt.color11:lightgoldenrod2
URxvt.color12:skyblue1
URxvt.color13:pink1
URxvt.color14:lightblue1
URxvt.scrollBar:False
URxvt.saveLines:3000
URxvt.font:xft:Bitstream Vera Sans Mono-12,xft:WenQuanYi Bitmap Song-12
URxvt.boldFont:xft:Bitstream Vera Sans Mono-12:Bold,xft:WenQuanYi Bitmap Song-12:Bold
URxvt.preeditType:Root

再执行以下命令，然后重启 rxvt-unicode 就可以了。

以下是我的截图：

参考：使用文泉驿点阵字体后，英文如何设定？