What is uppercase a?

1. Uppercase "A" is the first letter in the modern English alphabet.
2. It is pronounced as "ay" or "uh" in English.
3. In typography, uppercase A is often referred to as "capital A."
4. The letter A originated from the Phoenician alphabet as the letter aleph, which represented an ox head.
5. In mathematics, uppercase A is often used to represent different concepts, such as an area, an amplitude or a set.
6. In computer programming, an uppercase A is represented by its Unicode character U+0041.