1. Technology
You can opt-out at any time. Please refer to our privacy policy for contact information.

Case Sensitive


Caps lock key on keyboard
Thinkstock / Stockbyte / Getty Images
Definition: Anything that is case sensitive discriminates between uppercase and lowercase letters.

Some examples of computer related data that is often times, but not always, case sensitive include commands, usernames, and passwords.

For example, if your Windows password is HappyApple$ you can not enter happyApple$ or HAPPYAPPLE$ because Windows passwords are case sensitive.

Note: If a command, program, etc. does not discriminate between uppercase and lowercase letters, it could be referred to as case insensitive though most of the time nothing at all is mentioned if there is no case sensitivity.

"I couldn't understand why the command I was trying to run wasn't working until I realized that it was case sensitive and I was using all lowercase letters by mistake."

©2014 About.com. All rights reserved.