[2003年6月24日]小飞博士先走了一步，从11号楼搬到了8号楼。少年天才小熊也紧随其后。当年徐志摩别了康桥，挥了挥衣袖，没有带走一片云彩，何其洒脱。他们都大包小包的，一个人扛不了，大家都去帮忙。就看他们怎么请客了。～～有空常回来看看～～回来看看～～～～哪怕给我们带点吃的顺便洗洗碗～～～

[2003年7月7日]道士相亲 这个事情说起来比较八卦，但是实在有意思，为了不至于忘却，还是记录在这里。话说那天道士受了陈阿姨的邀请，去吃饭，我们就知道多半是相亲，可是道士死活不相信。那天其实很冤的，道士睡得很晚，起地很早，天蒙蒙亮，就开始打游戏了。快中午过去，到了人家家里一看：完了，姑娘来了。（长相略去）大家可以猜测，道士比较沮丧了。更离谱的人家也没有看上道士。临走的时候，陈阿姨让大家留个联系方式，那女的先说有手机的，可是却不用，网也不上，bbs的账号都没有。反正就是不想和他再见一次。真是可怜的道士啊，第一次相亲就被拒了，还是不是被美女拒的……希望他下次相亲成功！

[2003年9月9日]小巴趣事 小巴今天和我们一起出去吃晚饭，走到金寨路上，突然XXXX。慌忙就在路边XXX。当时天正黑，可是不巧的是他穿了班上的球衣，他背上“中国科大”四个白色的大字赫然可见。众皆叹服…… 昨天晚上，巴弟做了好多俯卧撑，腰有些不舒服，让任捍头给他按摩。当时小巴觉得很爽，可是任捍头太生猛了，过了几分钟，小巴就发现自己的背都肿了，好恐怖啊！

[2003年11月03日]人像拍摄 昨天下午参加了影协的活动，作为影协的老兵，潜水多年，终于露了个头。万万没有想到的是参加活动的人太多了，黑压压十几个人，二十多台相机……可惜模特只有一个。我觉得她能在众多镜头前面还能那样，比我强多了，我肯定难过死了。最后大家干脆把一个来拍片的推上去让大家给拍了。哈哈！！

[2004年4月12日]半夜怪想 半夜里突然醒来，睡不着觉。我发现我每每到了晚上夜深人静的时候，脑筋特别活跃。古今中外的乱七八糟的事情都往脑子里钻，挡都挡不住。而且能作出很有价值的评论和总结，连我自己都为这些想法钦佩不以。我在想，难道我本来应该成为一个思想家，直到二十大几，方才悔悟？可惜已经投奔的自然科学多年，想回头都难了。或许不知不觉之间，我已经神经分裂了，晚上是个我，白天是另外一个。呜呼哀哉！为什么在大白天我就是大白痴呢？ 不过据我所知，思想特别丰富的人很多活在痛苦之中，比如说很多诗人，先锋摄影师等等，很多后来都走上了自杀的不归路。想着想着，怎么就不想活了呢？这真是个难题啊！ 最近有件喜事，就是我收了龙阳君为入室弟子。在我的悉心教导之下，决定放下铁锤，立地成佛。功德无量啊！

• 旁路电容:旁路电容主要功能是产生一个交流分路,从而消除进入易感区的不需要的能量.旁路电容一般作为高频旁路器件来见效对电源模块的瞬态电流需求,通常铝电解电容和钽电容比较合适作为旁路电容,其电容值取决于PCB的瞬态电流需求,一般在10到470范围内.如果PCB有很多集成电路,高速开关电路和具有长引线的电源,则应该选择大容量电容.


• 对于同一个电路来说，旁路（bypass）电容是把输入信号中的高频噪声作为滤除对象，把前级携带的高频杂波滤除，而去耦（decoupling，也称退耦）电容是把输出信号的干扰作为滤除对象。
  在供电电源和地之间也经常连接去耦电容，它有三个方面的作用：一是作为本集成电路的蓄能电容；二是滤除该器件产生的高频噪声，切断其通过供电回路进行传播的通路；三是防止电源携带的噪声对电路构成干扰。


•  数字电路输出信号电平转换过程中会产生很大的冲击电流，在供电线
  和电源内阻上产生较大的压降，使供电电压产生跳变，产生阻抗噪声(亦
  称开关噪声)，形成干扰源。
  一、冲击电流的产生：
  (1)输出级控制正负逻辑输出的管子短时间同时导通，产生瞬态尖峰电流
  (2)受负载电容影响，输出逻辑由“0”转换至“1”时，由于对负载电容的充
      电而产生瞬态尖峰电流。
      瞬态尖峰电流可达50ma，动作时间大约几ns至几十ns。
  二、降低冲击电流影响的措施：
  (1)降低供电电源内阻和供电线阻抗
  (2)匹配去耦电容
  三、何为去耦电容
      在ic(或电路)电源线端和地线端加接的电容称为去耦电容。
  四、去耦电容如何取值
      去耦电容取值一般为0.01~0.1uf，频率越高，去耦电容值越小。
  五、去耦电容的种类
  (1)独石  (2)玻璃釉  (3)瓷片  (4)钽
  六、去耦电容的放置
      去耦电容应放置于电源入口处，连线应尽可能短。

For overclockers

In the computer enthusiast world the terms are not fully defined. The most used meanings are following:
VCore: The core supply voltage of an 'important' chip like your CPU or GPU, usually not the Northbridge. Most frequently used to indicate CPU voltage.
VDD: The supply voltage to your Northbridge chip or the supply voltage for the input buffers and core logic of your memory chips (mostly on graphic cards).
VDDQ: The supply voltage to the output buffers of a memory chip.
VTT: Tracking Termination Voltage. Compared to VREF to determine Hi/Lo
VMem: Supply voltage to a memory chip.
VDDR, VDimm: Supply voltage to the memory on your motherboard.
VRef: Reference voltage for the input lines of a chip that determines the voltage level at which the threshold between a logical 1 and a logical 0 occurs. Usually 1/2 VDDQ.
VGPU: The supply voltage to your graphic card's processor.

Terms used by ATI internally:

VDDC: GPU Voltage
MVDDC: Memory Core Logic Voltage
MVDDQ: Memory Voltage supplied to the output buffers of the video card memory.
VTT: Termination Tracking voltage for video card memory.

Electrical Engineering Information

Positive voltages:
Vcc- Positive supply voltage of a Bipolar Junction Transistor.
Vdd- Positive supply voltage of A Field Effect Transistor

Negative voltages/ground:
Vee- Negative supply voltage of a Bipolar Junction Transistor.
Vss- Negative supply voltage of A Field Effect Transistor.

The letters c,d,e and s originated from the name of the legs of the transistors Collector, Drain, Emitter and Source.

The absolute distinctions between these common supply terms has since been blurred by the interchangeable application of TTL and CMOS logic families. Most CMOS (74HC / AC, etc.) IC data sheets now use Vcc and Gnd to designate the positive and negative supply pins.

The doubled suffix indicates that the voltage is "common", i.e. it is the supply voltage to one or more collectors (in the case of cc) and not just the voltage at a specific collector. Similarily, Vee is a common voltage for all emitters etc.

冲量的概念：冲量相等而形状不同的窄脉冲加载在具有惯性的电路上，其效果基本相同。

冲量--窄脉冲的面积。所谓效果基本相同，指该电路输出的响应波形基本相同。经过Fourier分析，在低频特性非常接近，仅在高频略有差异。

因此根据上面理论，可以用不同宽度的矩形波来替代正弦波，通过对矩形波的控制来模拟输出不同频率的正弦波。 在取样时候，可以把正弦波等分成N份，只要取样数量足够，就可以把正弦波看作成由N个脉冲组成，这些脉冲宽度相同，但是幅度顶部曲线和正弦波一致。根据冲量等同的理论，当面积相等时候效果相同，所以把等宽不等幅的脉冲变成等幅不等宽的脉冲。即pwm脉冲波形。

THE GODFATHER (1972)

FADE FROM BLACK: Int. of Don Corleone's home office -day

BONASERA (seated in front of the Don's desk, facing the camera)
I believe in America. America has made my fortune. And I raised my daughter in the
American fashion. I gave her freedom, but -- I taught her never to dishonor her family. She found a boyfriend; not an Italian. She went to the movies with him; she stayed out late. I didn't protest. Two months ago, he took her for a drive, with another boyfriend. They made her drink whiskey. And then they tried to take advantage of her. She resisted. She kept her honor. So they beat her, like an animal. When I went to the hospital, her nose was a'broken. Her jaw was a'shattered, held together by wire. She couldn't even weep because of the pain. But I wept. Why did I weep? She was the light of my life -- beautiful girl. Now she will never be beautiful again.
 [Bonasera breaks down. The Don gestures to Sonny to give Bonasera a drink]
Sorry...
 [Bonasera, taking the drink, sips from the shot glass]
I -- I went to the police, like a good American. These two boys were brought to trial. The judge sentenced them to three years in prison -- suspended sentence. Suspended sentence! They went free that very day! I stood in the courtroom like a fool. And those two bastard, they smiled at me. Then I said to my wife, "for justice, we must go to Don Corleone."

VITO CORLEONE (sitting behind his desk, petting a cat)
Why did you go to the police? Why didn't you come to me first?

BONASERA
What do you want of me? Tell me anything. But do what I beg you to do.

VITO CORLEONE
What is that? [Bonasera gets up to whisper his request into Don Corleone's ear] That I cannot do.

BONASERA
I'll give you anything you ask.

VITO CORLEONE
We've known each other many years, but this is the first time you came to me for counsel, for help.  I can't remember the last time that you invited me to your house for a cup of coffee, even though my wife is godmother to your only child. But let's be frank here: you never wanted my friendship. And uh, you were afraid to be in my debt.

BONASERA
I didn't want to get into trouble.

VITO CORLEONE
I understand. You found paradise in America, had a good trade, made a good living. The police protected you; and there were courts of law. And you didn't need a friend of me. But uh, now you come to me and you say -- "Don Corleone give me justice." -- But you don't ask with respect. You don't offer friendship. You don't even think to call me Godfather. Instead, you come into my house on the day my daughter is to be married, and you uh ask me to do murder, for money.

BONASERA
I ask you for justice.

VITO CORLEONE
That is not justice; your daughter is still alive.

BONASERA
Then they can suffer then, as she suffers.  (then) How much shall I pay you?

VITO CORLEONE (stands, turning his back toward Bonasera)
Bonasera... Bonasera... What have I ever done to make you treat me so disrespectfully? Had you come to me in friendship, then this scum that ruined your daughter would be suffering this very day.  And that by chance if an honest man such as yourself should make enemies, then they would become my enemies.  And then they would fear you.

BONASERA
Be my friend -- (then, after bowing and the Don shrugs)-- Godfather?

VITO CORLEONE (after Bonasera kisses his hand)
Good. (then) Some day, and that day may never come, I'll call upon you to do a service for me. But uh, until that day -- accept this justice as a gift on my daughter's wedding day.

BONASERA (as he leaves the room)
Grazie, Godfather.

VITO CORLEONE
Prego. (then, to Tom Hagen, after Bonasera leaves the room) Ah, give this to ah, Clemenza. I want reliable people; people that aren't gonna be carried away. I'm  mean, we're not murderers, despite of what this undertaker says.

2年前,在北京的Alex君,有伤风化的写了一篇可爱的文章<卖3G的男青年>.一时间这篇文章在网上轻舞飞扬...如今的alex君,早已经离开了吴总的怀抱,寻找他新的港湾.生活,总是让人奇怪.
[注1]3G指第3代通信系统 3th generation
[注2]目前吴总业已离开UT

圣诞节前夕.
天气真冷,还下着雪,刮着北风.
有位五次失去工作的男青年,为了养活负债的公司,冒着风雪去卖3G.
"3G,谁要3G."他没有棉衣,穿着一身旧西装,脖子围着一条破领带,脚上穿着一双烂皮鞋.他沿各家运营商敲门,可是没有一个人理他.
人们都在准备圣诞礼物,高高兴兴,欢欢喜喜,小伙子多可怜啊!他有许多宣传册,全部都包在一个旧笔记本包里,手里拿着笔记本.
    已经中午了,他一客户也没有见到.他又饿又冻地向前走,雪花落在很久没有修剪的长发上.他走到一幢楼房的窗前,朝里张望.啊!屋里那会议桌多漂亮啊,一位电信领导正和两个销售在玩耍,那销售该多幸福啊,桌子上还点着许多款色的手机,有红的,黄的,绿的,白的,他最喜欢那些大屏幕的手机,在桌上格外显眼.看到这里,男青年想起了他的前辈和前辈的前辈,他们最疼爱他,可是,他们都被炒了,想着想着,男青年哭了.
哭着哭着,他又走上了大街,突然,"轰隆"一声,一辆宝马经过,差一点将他撞倒.
　宝马飞一样跑过去了.男青年的身上沾满了泥水.而且皮鞋也丢了.他只好赤着脚.在雪地里喊着:
"3G,谁要3G."夜幕已经降临,男青年的脚已冻得发红发青.大街上到处都是烤鹅肉的香味.“啊,有钱的厂商准备kickoff了.”他实在走不动了,疲乏地缩在一个墙角里.他不敢回公司,因为他没有搞定一张订单.办公室里而且也很恐怖,领导可以从许多地方把解值书塞进屋子里来.
他冻得发抖,他需要信心,哪怕有一千块钱的单子的光和热也好.
他的一张笨嘴几乎冻僵了.太冷了.他决定点着一张发票,让它燃烧.
"哧!"发票燃烧了,象一团温暖,光明的火焰,男青年觉得象坐在火炉旁一样.火烧得那么欢,那么暖,那么美!这是怎么回事呢?当男青年刚刚伸出他一双脚,打算暖和一下时,火焰忽然熄灭了.火炉也不见了.他坐在那儿,手中只有烧过的发票.他又点着了一张客户请柬,请柬燃烧起来,发出了光.
墙上有亮光照着的那块地方突然变得透明,象一片薄纱,他可以看到房间里的东西,有支票,有订单,更有趣是的,这张单子从桌子里飞起来了,它的上面墨迹微潮,正在天上飞着呢,一直向男青年走过来.他伸出手去,火又熄灭了,他摸到的是冰冷的墙壁.
他又点了一本宣传彩页,彩页燃烧起来,变成一朵粉红色的光焰.
他发现自己坐在一个美丽的会议桌前,订单比刚才见到的那张还要大,还要美丽.它的金额上有几十个零.男青年把双手伸过去,火又熄灭了.几千只个零变成了明亮的星星.这些星星中有一颗落下来,在天空中划出一条长长的亮光。他又点了一本宣传彩页.
啊，火光中出现了他日日夜夜思念的总裁，他扑进老总的怀抱.
"吴总!"男青年叫起来."请把我带走吧!带到那没有爱立信,没有华为的地方.我知道,这火一熄灭,你就会不见了.就象那温暖的会议室,那美丽的手机,那幸福的订单一样,我什么也看不见了."于是,男青年把剩下的资料全点着了,因为他非常想把总裁留住.
铜版纸发出更加强烈的光芒,照得周围比白天还要明亮,总裁是那样慈祥,他把男青年抱起来了,他们在光明和幸福中飞走了.越飞越高,真的到了没有爱力信,没有华为的地方.新年的早晨,人们看到男青年仍坐在墙角里,他双颊通红,脸上带着幸福的微笑.可是,他已经死了,冻死在圣诞节的夜晚,他手里仍握着一把烧过的宣传单.