What is i alphabet?

The letter "i" is the ninth letter in the English alphabet and the sixth most frequently used letter in the English language. It is a vowel and is pronounced as "ai" as in "ice". "I" comes from the Phoenician letter "yodh," and its shape is derived from the Semitic word for arm. In the Roman numeral system, "I" represents the number 1. The dot above the letter "i" is called a tittle. In computing, "i" is used to represent the imaginary unit in mathematical equations. In typography, the use of "I" or "i" can indicate a person's sex, with "I" used for male and "i" used for female.