常见的PC将计算机硬件配置的相关参数信息保存在( )中。
- A.PROM
- B.DRAM
- C.CMOS
- D.SROM
正确答案及解析
正确答案
解析
本题考查计算机的基础知识。
PROM(Programmable Read-Only Memory)可编程只读存储器,也叫One-Time Programmable(OTP)ROM“一次性可编程只读存储器”,数据写入后永久保存,是一种可以用程序操作的只读内存。最主要特征是只允许数据写入一次,无法重新写入,如果数据写入错误只能更换存储器。
DRAM(Dynamic Random Access Memory),即动态随机存取存储器,最为常见的系统内存。DRAM只能将数据保持很短的时间。为了保持数据,DRAM使用电容存储,所以必须隔一段时间刷新(refresh)一次,如果存储单元没有被刷新,存储的信息就会丢失。(关机就会丢失数据)
CMOS是Complementary Metal Oxide Semiconductor(互补金属氧化物半导体)的缩写。它是指制造大规模集成电路芯片用的一种技术或用这种技术制造出来的芯片,是电脑主板上的一块可读写的RAM芯片。因为可读写的特性,所以在电脑主板上用来保存BIOS设置完电脑硬件参数后的数据,这个芯片仅仅是用来存放数据的。
SROM(static read only memory)静态只读存储器。
综合分析,本题选C。
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