Phoenician alphabet instance of Semitic alphabet
History
Origin
The earliest known alphabetic (or "proto-alphabetic") inscriptions are the so-called Proto-Sinaitic (or Proto-Canaanite) script sporadically attested in the Sinai and in Canaan in the late Middle and Late Bronze Age. The script was not widely used until the rise of Syro-Hittite states in the 13th and 12th centuries BC.The Phoenician alphabet is a direct continuation of the "Proto-Canaanite" script of the Bronze Age collapse period. The inscriptions found on the Phoenician arrowheads at al-Khader near Bethlehem and dated to c.1100 BCE offered the epigraphists the "missing link" between the two. The so-called Ahiram epitaph, whose dating is controversial, engraved on the sarcophagus of king Ahiram in Byblos, Lebanon, one of five known Byblian royal inscriptions, shows essentially the fully developed Phoenician script, although the name "Phoenician" is by convention given to inscriptions beginning in the mid-11th century BC. 
The German philologist Max Müller (1823-1900) believed that the Phoenician alphabet was derived from the Ancient South Arabian script during the 9th-century BC rule of the Minaeans over parts of the Eastern Mediterranean.Letter names
Phoenician used a system of acrophony to name letters: a word was chosen with each initial consonant sound, and became the name of the letter for that sound. These names were not arbitrary: each Phoenician letter was based on an Egyptian hieroglyph representing an Egyptian word; this word was translated into Phoenician (or a closely related Semitic language), then the initial sound of the translated word became the letter's Phoenician value. For example, the second letter of the Phoenician alphabet was based on the Egyptian hieroglyph for "house" (a sketch of a house); the Semitic word for "house" was bet; hence the Phoenician letter was called bet and had the sound value b.
According to a 1904 theory by Theodor Nöldeke, some of the letter names were changed in Phoenician from the Proto-Canaanite script. This includes:
type of example of manifestation of representation of