Down may refer to any of the following:
1. Down is a term used to describe a computer or software program is not functional and needs to be fixed or restarted before it can be used. For example, if the Computer Hope website were down, you would get an error when you tried to access any of our pages. However, since you are reading this page, the website is up.
2. Down is also one of the four directional arrow keys located on a computer keyboard. It is used to move the cursor in a downward direction. If you were using the WASD keys to navigate a program, the "S" key would have the same function as the down arrow key.