计算机英语讲课笔记06
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文章目录
I. The Result of Sign-in
- Let us take a look at the screenshot of the sign-in result
- There are thirty nine students in our class. Thirty one students have signed in and eight students have not. Six students asked for leave and two students are late for the class.
II. Numbers
- Numbers are very important in our learning, work and life.
- When we talk about nubmers, there are two ways of using numbers. In one case, we only care about “
how many
” or “quantity
”, and we use “cardinal numbers
”. For example, I ask you how many apples you have eaten. You answer that you have eatensix
apples. – one, two, three, four, five, six… In the other case, we care about the “order
” of the things, and we use “ordinal numbers
”. For example, I ask you which season in a year summer is. You answer that summer is thesecond
season in a year. – first, second, third, fourth, fifth, sixth… - I want to say that he is No. 1 in his learning in our class. There are several ways to express this fact.
- He is the
first
one in our class. - He
comes first
in our class. - He is
second to none
in our class.
III. Software Categories
- Software can fall into two categories: System Software and Application Software.
S o f t w a r e S y s t e m S o f t w a r e A p p l i c a t i o n S o f t w a r e Software\\begincases System\\ Software\\\\ Application\\ Software\\\\ \\endcases SoftwareSystem SoftwareApplication Software - System software can fall into three categories: OS (Operating System), Language Processors, DBMS (DataBase Management System).
S y s t e m S o f t w a r e O S : O p e r a t i n g S y s t e m W i n d o w s L i n u x U b u n t u C e n t O S M a c O S L a n g u a g e P r o c e s s o r s C o m p i l e r I n t e r e p t e r A s s e m b l e r D B M S S Q L D B M S M y S Q L O r a c l e S Q L S e r v e r D B 2 O c e a n B a s e N o S Q L D B M S H B a s e R e d i s M o n g o D B System\\ Software \\begincases OS: Operating\\ System \\begincases Windows\\\\ Linux\\begincases Ubuntu\\\\ CentOS\\\\ \\endcases\\\\ MacOS\\\\ \\endcases\\\\ Language\\ Processors \\begincases Compiler\\\\ Interepter\\\\ Assembler\\\\ \\endcases\\\\ DBMS \\begincases SQL\\ DBMS \\begincases mysql\\\\ Oracle\\\\ SQL\\ Server\\\\ DB2\\\\ OceanBase\\\\ \\endcases\\\\ NoSQL\\ DBMS \\begincases HBase\\\\ Redis\\\\ MongoDB\\\\ \\endcases\\\\ \\endcases\\\\ \\endcases System Software⎩⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎨⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎧OS:Operating System⎩⎪⎪⎪⎨⎪⎪⎪⎧WindowsLinuxUbuntuCentOSMacOSLanguage Processors⎩⎪⎨⎪⎧CompilerInterepterAssemblerDBMS⎩⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎨⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎧SQL DBMS⎩⎪⎪⎪⎪⎪⎪⎨⎪⎪⎪⎪⎪⎪⎧MySQLOracleSQL ServerDB2OceanBaseNoSQL DBMS⎩⎪⎨⎪⎧HBaseRedisMongoDB OceanBase
是阿里巴巴和蚂蚁金服 100% 自主研发的金融级分布式关系数据库,在普通硬件上实现金融级高可用,在金融行业首创“三地五中心”城市级故障自动无损容灾新标准,同时具备在线水平扩展能力,创造了 6100万次/秒处理峰值的业内纪录,在功能、稳定性、可扩展性、性能方面都经历过严格的检验。- Next time we will talk about Operating Systems.
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