November **, ****
To Whom It May Concern:
This is to confirm that Mr. Li Dashui has worked as a full-time system analyst in the NY University since Jun 1994(or This letter is to verify that Mr. Li Dashui worked as an chemist from July 1993 to Sept. 1994. Mr. Lis main duties and responsibilities are as follows:
Design, develop and install various computer hardware, software and network systems for banks.
Determine and analyze the requirements of each system project into related componets solved through the application of computer technology.
Write specifications for computer programs, and test and implement programs for network systems and control systems.
Supervise computer programmers and other system analysts for paticular system projects.
Mr. Li has mainly taken part in the following projects:
The first engineering design of city general business computer network system.
Upgrading banks system for IBM AS/400 E45 to IBM AS/400 320, IBM AS/400 530.
The design development and test of city general business computer network system.
The design and development network and database systems for the Golden Credit Card Project.
Mr. Li is well experienced with IBM AS/400 system analysis, TCP/IP protocol, SNA protocol and LAN; proficient in RPGIII, VB, C/C++ and DB2, and skilled in UNIX, Informix, Client/Server etc.
Mr. Li is a hard-working and talented analyst, and is highly respected member in our company. If you need further information, please feel free to contact me. Sincerely yours, Singature, Zhang Jianguo
Senior Engineer and Technical Manage Company Name, Address, Tex Fax
My mother
My mother is very kind and beautiful although she is not tall.She is 42 years old this year.She is a nurse,so she is always very busy day and night.But she loves her job,and she often takes care of her patients.Of course,she also likes singing,dancing,cooking and shopping,but she almost no time to do them.
Oh,I love my mother.
描写妈妈的英语作文:
我们家有一台电脑,它已经被我们家买了好几年了,虽然它不像以前那么漂亮了,可是用处却和以前买的时候一样,这台电脑优点很多,妈妈用电脑上网买衣服,买家里需要的东西……爸爸经常用电脑工作、写材料、查找一些信息……我经常用它听录音,打写……
有时候我没有事的时候我会玩电子游戏,我最爱玩儿的电子游戏是美食大战老鼠,因为这个游戏非常好玩儿,升一次级就给两个新的美食或者是一个新的美食,这个游戏还有对战模式,如果开始挑战的时候没有选好防御卡还可以退出,重新选择,有时候还可以两个人一起玩,由于这个游戏很好玩,我玩了一会儿就忘记了我自己的主要任务了。
电脑虽然有优点,但是它的缺点也有很多,如果看的时间很长会伤害到人的身体和眼睛,会让人们腰疼,背疼,脖子硬,还有一个非常重要的问题,那就是非常刺激眼睛,所以我们不能长期坐在电脑近处。
Dear Sir/Madam:
As a teacher at xxxx school, I am writing to provide you a recommendation for Miss/Mr.xx so as to help you assess her/his application for acceptance into your program and consideration for financial aid.
Considered a promising student with originality and sophistication in her/his thinking, (she/he was asked, in the spring semester of 2008, to develop a subsystem of a DBMS project for her B.S.thesis, for which I was the chief leader. T
his subsystem was designed to manage the information of materials in NO.1 Foundry Plant of Dongfeng Auto Works.To do the job, she/he read many books about software engineering and took some courses in Database Principles and Management. Keenly aware that the design of a DBMS decides the quality of the whole software system, she did her/his utmost from the beginning of the project.(参加过什么活动. From analyzing users requirements to designing the whole system, from the detailed designing to the final programming, she was very level-headed and full of innovation every step of the way. Taking full advantage of her ability and creativity, she firmly focused herself on her objective and gnored all distractions. She successfully reached her goal. In the final software testing, only a few bugs were found in her subsystem. My appreciation of her talelent was thus confirmed.Miss is a very personable woman, friendly and helpful, and she has always been a team player in her work.
I would greatly appreciate it if you could give her application for candidacy to your Ph.D. program favorable consideration. Should you need any further information in your deliberation, please do not hesitate to contact me.
Sincerely xxxx
提起电脑,相信大家都非常熟悉。电脑又叫电子计算机。如今,随着科技的发展,电脑已走进千家万户。
电脑一般分为两大类;一类是个人电脑,个人电脑有台式的,笔记本的,最新式的是平板的。另一类是超级电脑,每秒的运算速度在亿次以上,主要用在银行、科研、军事等方面。
电脑由硬件系统和软件系统组成。电脑的硬件系统主要由主机、显示器、键盘、鼠标、音箱、摄像头等组成。主机就是电脑的主管,就像我们的头脑,控制着电脑每天的工作。显示器就像我们的眼睛,把所有工作的成果展示给我们看。键盘上有26个英文字母键,方向键,数字键和几个重要按键,是电脑主要的输入设备。鼠标就像一只老鼠似的扒在桌子上,可是作用非常大,可以灵活地指挥各种应用程序。音箱可以带领我们进入美妙的`音乐世界。摄像头可以让我们足不出户,与世界各地的人们交流。电脑的软件系统分为两类;一类是操作系统软件,主要有windows操作系统和Linux操作系统等,最原始的是dos操作系统。它们是计算机底层的系统软件,负责管理、调度、指挥计算机的软硬件资源使其协调工作,没有它,任何计算机都无法正常运行。它在资源使用者和资源之间充当中间人的角色,举个例子,一个用户(也可以是程序将一个文件存盘,操作系统就会开始工作:管理磁盘空间的分配,将要保存的信息由内存写到磁盘等。当用户要运行一个程序时,操作系统必须先将程序载入内存,当程序执行时,操作系统会让程序使用CPU。另一类是应用软件,可以办公,也可以游戏,还能保证安全等等。
电脑的用途很多:可以上网,例如聊天、发邮件、听音乐,玩游戏、登Q、查资料等;可以管理资料,比如学校的图书室里的电脑是用来登记图书借出去情况的;可以记帐,比如超市里的计算机,就是拿来记帐的;还可以控制生产,比如水泥厂里的电脑能自动控制生产。瞧,电脑真是各方面的能人!
电脑与人们的生活息息相关,让人们的生活变得更美好。
你知道什么东西可以让我们快速的查资料、传送电子邮件吗?答对了!是电脑!它可是所有电器中最受欢迎的呢!我们在生活中最需要它,因为可以不用出外晒太阳就能买到想要的商品。电脑有好处也有坏处,它真像个“双面间谍”。
在三年级的时候,我开始学电脑,当时我认为电脑只是用来玩游戏而已,没想过所谓的大经理、大老板,每天所依靠的就是电脑。现在,我想法不同了,开始慢慢理解,学电脑是为了方便人们的生活,例如:大部分上班族,他们需要统计资料、制作图表,打字是必要学习的!设计师,现在大多用电脑取代手绘,连衣服也是透过电脑设计。电脑,真是个可靠的小帮手啊!
现代人,大多以电脑为朋友,例如:宅男,没事吃饱太闲就只知道打电脑,但它们并不是在做有益的事情,而只是在玩线上游戏。越来越多的人沉迷在网咖,我们这些“未来的主人翁”花费时间,却浪费在没用的事情。唉-电脑,你真是个害人精!
但是,电脑不只有坏处而已。每件事物都有好有坏,当然电脑也不例外!虽然它很坏,但也有很大的益处。它的益处是-当我要传送电子邮件时,它就马上变身为“小邮差”;当我要写文章时,它就成了我的笔。喔!电脑,你怎么那么可靠!
我们的生活里不能没有电脑,有人把它当朋友,更有人把它当作神,而我,把它当作小帮手。它既能娱乐我的生活,也丰富了我的世界。你能说电脑永远只带来负面的影响吗?我不认为。电脑,你到底是何方神圣?是好还是坏?在我心里,你始终被盖上一层朦胧的薄纱!
我家有一台联想笔记本电脑,长约30厘米,宽约24厘米,厚约6厘米,和一本大笔记本差不多。它虽然是电脑的微缩型,但价格可比普通电脑贵了差不多一倍,可功能却一点都不少。
笔记本电脑通体漆黑,像一块黑绸缎一样。面板上有一块legend的联想标志闪闪发光。主体四周有一些可以打开的小门,可以放入软盘、光盘;还有许多输入,输出口,可以插入电线,连接许多复杂的小配件,如稳压电源,耳机,“猫”(调制解调器等。
打开盖板,只见盖板里面一块微型液晶板映入眼帘,原来这就是显示器。主体上面是排列非常紧凑的键盘,键盘的下方有一个感应器,具有鼠标的功能。键盘的上面有两个喇叭,以至电脑的背景音乐十分宏亮。左侧面还有一个开关,这是电源总开关,控制着电脑的开和关。右侧面还有一个插口,是鼠标插入的地方。我非常爱用它来休闲。打开它,我就有一种新鲜感。用鼠标在因特网上漫游,可以看到很多奇妙的趣文,十分舒坦。它还能帮助我学习文化知识。记得有一次,我在做数学题时,遇到了一道难题,便请教这位“老师”。它先“讲”出解题的思路,然后列出几种解题算式。让你选择一种正确的。你如果答得好,它还会放一段动画片奖励你呢!有时我也玩游戏,一个人太没意思了,它就会和我“并肩战斗”。
这个电脑可以储电,因为主体体中有蓄电池。白天不在家,就插上插头,给它补补“力气”,也挺有趣的。充满电的它无需电源插头,直接可以使用。与普通电脑相比,它体积小,便于携带,所以人们称它“便携式电脑”。
笔记本电脑是我的好老师,也是我的好伙伴,更是世界高科技发展的象征。
© 2022 xuexicn.net,All Rights Reserved.