The capital letters of the modern greek alphabet is almost the same as lonic alphabet. Lower case letters came to be in after 800 AD. People would usually write horizontal lines and write, right to left. In 500 bc changed the direction of writing to horizontal lines from left to right.
The Greek alphabet has been used since 8th century BC. It was mostly derived from the earlier Phoenician alphabets and was the first alphabetic script to have distinct letters for vowels as well as consonants.
Ancient Scripts: Greek There were many variants of the early Greek alphabet, each suited to a local dialect. Eventually the Ionian alphabet was adopted in all Greek-speaking states, but before that happened, the Euboean variant was carried to the Italic peninsula and adopted by Etruscan and eventually Latin. The following chart compare various early variants, the Phoenician equivalent, the modern alphabet, and pronunciations