Text or inputted text that is capitalization sensitive. In other words, "Computer" and "computer" are two different words because the "C" is in uppercase and lowercase. Many times a password and username is case-sensitive. This means your username or password must have the proper case or you will be unable to login. If you're unable to log into a computer or service make sure your caps lock key is not on and that you're using the correct case.
Anything that is not case sensitive means that any uppercase or lowercase character can be entered. For example, the Windows command line or MS-DOS is not case-sensitive, however, the Linux command line is case sensitive. In otherwords you could type "cd", "CD", "Cd", or "cD" for the cd command in the Windows command line without error, but only "ls" will work for the ls command in Linux, typing in "LS" would generate an error.
- Are e-mail addresses case-sensitive?
- Are MS-DOS and the Windows command line case-sensitive?
- Computer keyboard help and support.