Greek alphabet (English: Greek alphabet, Greek: ε λ λ ν ι κ? αλφ? β η ο) is a letter used in Greek, and it is also widely used in mathematics, physics, biology, chemistry, astronomy and other disciplines. Greek alphabet, similar to Latin alphabet and Cyrillic alphabet, is a complete phonemic text.

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In modern Greek, all stress symbols are unified into a substitute symbol, that is, acute notes. The use of breathing symbols is abandoned, but partials remain. Of course, if you use Greek letters as specific codes, you don't need to add additional symbols.

The diacritical marks are written above lowercase letters and above the left of uppercase letters. In the case of diphthongs or diphthongs, the second vowel accepts phonetic symbols. Breathing symbols are written to the left of acute notes or accents, but below the accented notes. Stress symbols are written above partials, and sharp sounds or stress symbols can also be written between two points.