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May 06 I Dream A Dream (Les Misearables)I dreamed a dream in time gone by
When hope was high, And life worth living.
I dreamed that love would never die
I dreamed that God would be forgiving.
Then I was young and unafraid
And dreams were made and used, and wasted.
There was no ransom to be paid
No song unsung, No wine untasted.
But the tigers come at night
With their voices soft as thunder.
As they tear your hope apart
As they turn your dream to shame.
And still I dream he'll come to me
That we will live the years together.
But there are dreams that cannot be
And there are storms we cannot weather.
I had a dream my life would be
So different from this hell I'm living.
So differnet now from what it seemed
Now life has killed the dream I dreamed. February 28 载着你载着你
地平线上 光亮那方 大地把你 何处收藏 许多灯火 深情照亮 一人的你 身在何方 嘿!出发吧 面包一片 小刀油灯 包里塞放 留给父亲 热切想念 母亲予我 那样眼神 地球转 藏着你 明亮的眼眸 辉亮的灯光 地球转 载着你 某天定相会 只要你我同载上 地球转 藏着你 明亮的眼眸 辉亮的灯光 地球转 载着你 某天定相会 只要你我同载上 January 29 Jabber? 已经回家一个周了,不知道自己到底想干些什么.拿了本Mc Graw Hill的Computer Architecture and Organization Third Edition.其实已经不是第一次拿书回家了,虽然也瞄两眼,但是总感觉比起我大老远的带过来,吃亏了不少…… 书写的的确不错,我了解了许多东西,尽管有一些让人想不通的地方,比方说里面提到的算盘竟然是日本算盘,难道中国没有好看的算盘么?真是搞不懂。看到了Turning Machine,真是有意思,就像个大磁带放到了一个更大的录音机里。还有Babbage发明的Difference Engine(如图)
令我不禁想起了在计算机数值计算方法里面学到的,其实就是个计算多项式的机器,然后把各种函数用泰勒展开进行计算。有一个问题就是要控制好手摇的次数,摇多了可能会超出机器的精度,摇少了的话又达不到计算要求的精度,实在是很麻烦。当然为了提高计算机的精度,机器可能会变成下面的样子……
这种东西一看就是机械时代的产物,用我的眼光来看,这些东西用来轧面条也许会好看些? |
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