printers once kept the type for capitals and for small letters in separate cases; capitals were kept in the upper half of the type case and so became known as upper-case letters.
Examples of upper-case letter
upper-case letter
Proper will change the first letter of each word to upper case, the rest to lower case.
From the nzherald.co.nz
Here is a comparison of the upper and lower case versions of each letter used in the English alphabet.
From the en.wikipedia.org
Control characters generated using letter keys are thus displayed with the upper-case form of the letter.
From the en.wikipedia.org
There are no distinct upper and lower case letter forms.
From the en.wikipedia.org
Choose from nine tote colors and 17 thread colors to personalize this special gift with a single upper-case letter.
From the timesunion.com
Each of the display's 42 tiles is randomly assigned a lower-case and upper-case letter and a number or symbol.
From the newscientist.com
In other words, it does not matter whether the key would have produced an upper-case or a lower-case letter.
From the en.wikipedia.org
Links often appear in the middle of sentences, but you don't have to worry about making the first letter upper case.
From the en.wikipedia.org
Elsie Dodds designs cushions covered with a vibrant, graphic print of things beginning with a given letter that is itself printed in upper and lower case on the reverse side.