双语畅销书《艾伦图灵传》第8章:水银延时线(9)
日期:2019-03-20 16:50

(单词翻译:单击)

Alan's first task was to write a report1, setting out a detailed design of an electronic universal machine, and an account of its operation.
图灵的第一个任务是写一份报告,内容是电子通用机的详细设计及其全部功能。
Surprisingly, the report that he submitted did not contain mention of Computable Numbers.
出人意料的是,图灵提交的报告只字未提《可计算数》,
Instead, it referred to the Draft Report on the EDVAC, with which his report was to be read 'in conjunction'.
反而引用了《EDVAC报告草案》。
However, the ACE proposal was effectively self-contained, and its roots lay not in the EDVAC, but in his own universal machine.
然而,ACE的设计实际上是自洽的,其根源并不是EDVAC,而是图灵自己的通用机。
Some fragmentary notes, dating from this early period, made this clear:
有一段早期的笔记,清楚地表明了这一点:
...In 'Computable Numbers' it was assumed that all the stored material was arranged linearly,
……在《可计算数》中,我们假设所有的信息都是线性存储的,
so that in effect the accessibility time was directly proportional to the amount of material stored, being essentially the digit time multiplied by the number of digits stored.
读取时间直接与存储量成正比,基本上等于读取一项的时间乘以存储的项数。
This was the essential reason why the arrangement in 'Computable Numbers' could not be taken over as it stood to give a practical form of machine.
这就是为什么在实际构造时,不能照搬《可计算数》里的设计。
It was also implicit in an opening paragraph of the report he now wrote, which explained how new problems would be 'virtually only a matter of paper work', with examples, and said:
在报告的开头段落,也暗示了这一点,图灵在此处解释了为什么改变机器的功能时不需要改动机器本身,他给出了示例注,并写道:
It may appear somewhat surprising that this can be done.
这是可以实现的,虽然看起来有点难以置信,
How can one expect a machine to do all this multitudinous variety of things?
我们怎么能指望一台机器能做那么多不同的事情呢?
The answer is that we should consider the machine as doing something quite simple, namely carrying out orders given to it in a standard form which it is able to understand.
要回答这个问题,我们应该考虑到,这是一台执行指令的机器,我们把一件事分解成基本的指令,指令有标准的格式,使机器能够理解。

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