Draw UML

Draw a System Sequence Diagram of buying a bottle of Coke on a Vendor Machine.


  • It's a normal vendor machine you can see on the street.
  • Again, you may need a tool like draw.io to help.
  • Draw it seriously, show others that you care! This tutorial may help.
  • What if the coin didn't work?


Post the link to your work as a comment below. That is, you may have to upload to Google Drive, GitHub, or any other public online space first.


No, we don't score you. But, all the work will be reviewed by others and be discussed in the next sharing session. Don't be shy, and please comment on others' work if you have any suggestion/idea.