I am very old now. I was born in China. Many people used me for calculating in the past, but now I am a bit lonely because they dont like me now. Do you know who I am?abacusRiddles (谜语谜语)I am very big. Scientists use me to solve some mathematical problems. huge computerDo you know who I am?I am very small. I can be used for calculating. In China, a lot of students use me when solving mathematical problems. Do you know who I am?calculatorI can be used for calculating. Besides, I can also be used for watching DVD, sending e-mail and communicating through the Internet. However, I am not a PC, because Im small enough for you to take me with you. Do you know who I am?laptopPDA Personal Digital AssistantI am so small in size that I can fit in your hand. I usually have a small screen usually bigger than a digital phone, however smaller than the smallest laptop, Im a great way to store telephone numbers, access the internet, make calculations, and so on. Do you know who I am?robotIm a machine that works automatically. I can do a wide variety of tasks, especially suitable for doing jobs too boring, difficult,or dangerous for human beings. Do you know who I am?PC Personal ComputerIm a small, relatively inexpensive computer designed for an individual user. Im based on the microprocessor technology. At home, people use me to surf the Internet and play games. Do you know who I am?PDAabacuscalculatorhuge computerPClaptopWhats next?Can you tell the development of computers?robotwork for us in Mars(火星火星)Whats next?carry thingswork in wars (战斗战斗)仿真机器人entertainment 娱乐娱乐What do you think will be the next development?Do you know in what ways computers are used today? Work out a list and compare it with your partner.search for watch movieslisten to musicread books and magazinessend emails to friendsdownload music and filmsshopping onlineplay games on the computerdraw picturestake part in chat groupsParts of computerskeyboardmousemodemscannerprinterspeaker移动硬盘移动硬盘USBFlash disc 1 TB 固态硬盘固态硬盘Hard disc:What is it in English?Main board(主板主板)What is it in English?CPU (central processing Unit)中央处理器中央处理器What is it in English?RAM (随机存储器随机存储器)(Random Access Memory )What is it in English?Keyboard (键盘键盘)What is it in English?Power supply(电源电源)DVD ROMDigital Versatile Disc Read Only Memory 数字通用光盘数字通用光盘