1. Let's talk about the composition of the computer. Most of them are. Asked a lot of questions, for example, when talking about external storage and memory, most people don't know which hard disk belongs to, and then mentioned the external hard disk. If you are confused, people will often be interested.

2. Classification of computers, from supercomputers to microcomputers.

3. The development of operating system. Single machine, development of dos-win7. This can be more interesting. I remember laughing every three minutes when I did it. Network, a brief mention.

4. Simply put, the development of the Internet.

5, talk about some application software, this kind of talk: office, outlook type. It must be interesting. That's the key. Then cooperate with the projector.

Above, you can talk about two classes.