写作思路：从文章的写作目的、中心主旨入手，以使文章中心思想鲜明、深刻地表现出来，正文：Modern technology makes life more convenient; Tools are milestones of scientific and technological progress and human Man used to saw trees with a hand saw， but now， a tree can be sawed down in a few minutes with a 现代科技使生活更加便捷；工具是科技进步和人类进步的里程碑。人类过去用手锯锯树，但是现在，用电锯可在几分钟内锯倒一棵树。Another example is more vivid: if you have something urgent to inform your friend， and his home is 2 hours away from your home， you may want to make a phone But there is no telephone in your friend's What should you do?另外一个例子更加生动形象：如果你有急事通知你的朋友，而他家距你家有2小时的路程，你可能想打个电话。但是你的朋友家又没安电话，你该怎么办？Nowadays， with the progress of modern science and technology， the use of internet has become very A few years ago， people had to search for a large amount of data to collect the required information， and finally they were exhausted and wasted a lot of Now， if you use the internet， everything will be a piece of As long as you tap the keyboard， you will be 如今，随着现代科技的进步，使用网络已很流行。若干年前，人们不得不查找大量资料来搜集需要的信息，最后人累得疲惫不堪，还浪费了大量时间。现在，如果使用网络，一切就都是小菜一碟了。只要轻敲键盘，就会有求必应。We all expect modern science and technology to reach a higher level， because modern science and technology really makes life more 我们都期待着现代科技能达到一个更高的水平，因为现代科技确实使生活变得更便捷。
Early Electronic Computers The first real progress toward electronic digital computer came in the late 1930s when Howard Aiken of Harvard University and George Slibits of Bell Telephone Laboratories developed an automatic calculator using relay networks;the relay is an electromagnetically controlled Other relay machines were developed during World War II for artillery ballistic Although these machines were relatively slow and comparatively they demonstrated the versatility of the electronic Then，in the early 1940s， John Mauchly and JPresper Eckert，J，of the University of Pennsylavania designed and built a vacuum tube computer，which they called the electronic numerical inegrator and calculator(ENIAC);it was completed in 1945 and installedat Aberdeen Proving Ground，M ENIAC used 18000 electron tubes，which required tremendous amounts of power;its failure rate wa high and it was difficult to program because a plugboard was Three very important discoveries were then made，which began the rapid evolution toward today's digital First，John von Neumann proposed that the program reside in the computer's memory where it could be changed at will，solving the pogranmming difficulties of ENIAC;second，in 1947 the transistor was invented by John Bradeen，Waltr HBrattain， and William Shockley，which drastically reduced the size and power requirements by replaceing the electron vacuum tube;hird， JWForrester and his associates at the Massachusetts Institute of Technology developed the magnetic，core memory，which made large amount of storage Reference book: Digital Logic Circuit Analysis and Design(Authors:Victor PNelson HTroy Nagle JDavid Irwin)
Nowadays， technology is everywhere around The development of technology has a significant affact toward the Several technologies that we usually use are the internet， computer， and These new technologies make our life much easier and First， the development of computer changes our Decades ago， people needed to do lots of complex calculation on hand because they did not have computer， and more obvious， they did not have the software for As the result of that， people spent hours on the equations that a computer can solve in just a Since the development of computer， people are able to use some kind of software to compute lots of complex functions and mathematical Computer becomes the most helpful equipment for the sciencists because they can use their time more In conclusion， I believe the development of technology brings significant impact to our It is very helpful to us and I believe technology will keep improving in
