Joey玖玖
ComputersNowadays, computer plays a more and more important role in our lives. We can't live without it. However, everything has two sides. So does computer. On the one hand, computer has brought a lot of convenience to our daily lives. We can search imformation for our essays on baidu, discuss issues with friends on qq, and use wikipedia to find professional answers for our problems. On the other hand, computer truly has some negetive effects on some people's lives. Some children can't control themselves so much, so they often spoil hours on the computer games and chatting with friends about some useless topics. Also, there are a lot of imformation online that is not appropiate for young children. All in all, although computer brings all kinds of
CYGUANGZHOU
A computer is a programmable machine designed to automatically carry out a sequence of arithmetic or logical operations. The particular sequence of operations can be changed readily, allowing the computer to solve more than one kind of problem. An important class of computer operations on some computing platforms is the accepting of input from human operators and the output of results formatted for human consumption. The interface between the computer and the human operator is known as the user interface.Conventionally a computer consists of some form of memory, at least one element that carries out arithmetic and logic operations, and a sequencing and control unit that can change the order of operations based on the information that is stored. Peripheral devices allow information to be entered from an external source, and allow the results of operations to be sent out.A computer's processing unit executes series of instructions that make it read, manipulate and then store data. Conditional instructions change the sequence of instructions as a function of the current state of the machine or its environment.The first electronic digital computers were developed in the mid-20th century (1940–1945). Originally, they were the size of a large room, consuming as much power as several hundred modern personal computers (PCs).[1] In this era mechanical analog computers were used for military applications.Modern computers based on integrated circuits are millions to billions of times more capable than the early machines, and occupy a fraction of the space.[2] Simple computers are small enough to fit into mobile devices, and mobile computers can be powered by small batteries. Personal computers in their various forms are icons of the Information Age and are what most people think of as "computers". However, the embedded computers found in many devices from mp3 players to fighter aircraft and from toys to industrial robots are the most numerous.
guodong930
现在电脑越来越普及了。我也有一台自己的电脑,它是浅绿色的。有了电脑我学习更方便了。更重要的是,通过电脑我极大地扩大了自己的知识面,它真的是我的好帮手,而且也是我值得信赖的好朋友。my computercomputer is more and more popular at present. i have my own computer and its color is light green. it's more convenient for me to study with a computer. and the best of all is that computer can tell me almost everything i want to know. it really helps me a lot and has become a trustworthyfriend of mine.
Lucia慢半拍
I like playing with the computer. Every day I furf the internet on the computer. I can play games on the computer. I can get much information on it. I can chat with my friends on it. I predict books will on computers, not on paper in the futre. Kids won't go to school. They will study at home on computers. Do you like computers? 我喜欢玩电脑。每天我上网冲浪。我可以在电脑上玩游戏。我可以在电脑上得到很多信息。我可以在电脑上和朋友聊天。我预言未来书将出在电脑上,而不在纸上了。孩子们将不用去上学了。他们将在家里的电脑上学习。你喜欢电脑吗?
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