论文部分内容阅读
通常在计算机工作时,机器所执行的读操作次数远远多于写操作次数。根据所进行的程序种类之不同,读和写操作次数的比值在4到10之间变化。在破坏读出的存貯器里,由于在读数过程原存信息被破坏了,因此必须相应地要占用一段时间来进行重写(或称再生)。在不破坏读出存貯器里,由于勿须再生,所以就可以节省很大一部分时间。此外,采用不破坏读出存貯方式的器件较通常采用的破坏读出方式的器件有更快的运行速度,因而这里可以缩短存貯周期。同时,因为没有再生的错误,所以前者的可靠性也比较高。本文将介绍一个不破坏读出存貯器的模型,其容量为一万六千字,字长72位,读数周期是100毫微秒,写数周期是500毫微秒。下面分别来介绍一下与这个存貯器有关的一些问题及解决问题的线路。
Oftentimes when the computer is working, the number of read operations performed by the machine is far more than the number of write operations. Depending on the type of program being executed, the ratio of read and write operations varies from 4 to 10. In destroying the read-out memory, since the original information is destroyed during the reading process, it is necessary to occupy a period of time for overwriting (or reproducing) correspondingly. Without destroying the read-out memory, a substantial portion of the time can be saved as no regeneration is required. In addition, the use of non-destructive read-out device than the more commonly used destruction of the read-out device has a faster operating speed, so here you can shorten the storage cycle. At the same time, the reliability of the former is relatively high because there is no regeneration error. This article will introduce a non-destructive read memory model, which has a capacity of 16,000 words and a word length of 72 bits. The read cycle is 100 ns and the write cycle is 500 ns. Here are some of the memory-related issues and solutions to the line.