今日要点:
- EEPROM、EPROM、DRAM概念
- be动词及11种表语(中): 前5种
EEPROM(电可擦的,可编程的只读存储器)
Electrically Erasable, Programmable Read-Only Memory. (Pronounced"Double-E"-PROM.) A type of ROM that can be erased electronically.
Electrically [ɪ'lektrɪklɪ]: 副词,用电地,与电有关地
Erasable[ɪ'reɪsəbl]: 形容词,可被擦掉的
Pronounce[prəˈnaʊns]: 动词,发音
电可擦的,可编程的只读存储器。一种ROM能被电擦除。
EPROM(可擦的,可编程的只读存储器)
Erasable, Programmable Read-Only Memory. A type of ROM that can be erased by exposing it to ultraviolet light. Once erased, an EPROM can be reprogrammed with the help of a device programmer.
to expose...to...: 使...暴露在...
ultraviolet light[ˌʌltrəˈvaɪələt]: 紫外光
with the help of: 在...帮助协助下
一种可用紫外线擦除的存储器。一次擦除后,EPROM可以在设备编程器的帮助下被重编程。
DRAM(动态随机访问存储器)
Dynamic Random-Access Memory. A type of RAM that maintains its contents only as long as the data stored in the device is refreshed at regular intervals. The refresh cycles are usually performed by a peripheral called a DRAM controller.
only as long as: 条件语句,只有(仅)在...条件下才...
at regular intervals: 定期刷新
be performed by: 由...来执行
动态随机访问存储器。一种RAM,存储在其设备中的数据被定期刷新时才能保存它的内容。刷新周期一般由一个叫DRAM控制器的外设完成。
今日语法小知识: be动词及11种表语(中)
名词:
He is a boy.
他是个男孩名词性从句:
The trouble with me is that I lack money.
我的麻烦是缺钱名词性短语:
The question is when to set out.
问题是什么时候出发呢动名词:
My hobby is collecting stamps.
我的爱好是集邮动词不定式:
My purpose here is to see you.
我来这里的目的是为了见你