What are some interesting jokes in the IT field?

A programmer decided to practice calligraphy after retirement. So he bought Four Treasures of the Study at a big price. One day, I was in a good mood after dinner, grinding ink and making paper, and ordering sandalwood. Calm down for a moment, splash ink and solemnly write down a line: hello world. I have sent your network card driver to your mailbox. Well, Manager Zhang: You can't press CTRL+C on your home computer and then CTRL+V on your company computer. Not even the same article. No, no, it's not even an expensive computer. There are 10 kinds of people in IT industry, 1 kinds can understand binary, and others 1 kinds can't. Now, as soon as I board G+, I will say that we know so much. We only need one coder. Where are any keys? Why programmers can't always tell Halloween from Christmas. A: Because Oct 3 1 == Dec25.