Consonants.
22
Sixteen, no vowels.
22
The Phoenicians developed an alphabet of 22 symbols because it allowed for simpler and more efficient writing compared to cuneiform, which had hundreds of characters. The Phoenician alphabet was easier to learn and use, making it ideal for trade and communication purposes.
They used numbers, and they had a system for representing consonants, but that can only loosely be described as an alphabet.
It was the first purely phonetic writing system in the history of humanity (as far as we know). It was an alphabet of only 22 letters, compared to the thousands of symbols required to read Egyptian or Sumerian.
Even though our modern 26 letter alphabet is called the Roman alphabet, the Romans did not invent it. They simply refined and polished a system of written language that had been developing for thousands of years in many nations. Most alphabet letters began as a simplified version of ancient drawings of animals, objects, or signs. In 3000 B.C., the Egyptians were writing with several hundred signs and pictures. Each sign or picture stood for a complete word or a syllable in the word. This was called hieroglyphics. But sign and picture writing was too slow for the business world, especially for the ancient Phoenicians, who were worldwide merchants and traders in 1200 B.C. So they developed an alphabet in which only symbols were used. Each symbol represented one sound, and several were combined to make the sounds of one word. The Greeks, who traded with the Phoenicians, adopted their alphabet in 800 B.C., but found that the Phoenician alphabet did not contain vowel sounds, which they needed for their language. So they kept 19 Phoenician letters and added 5 of their own (vowels) to make a 24 letter alphabet. The alphabet was perfected by the Romans in about 114 A.D. The Normans in England later added the letters V, W, and J, making the 26 letter alphabet, which was the basis for the western world's present alphabet. Our capital Q was once the symbol for a monkey. The ancient drawing looked like a Q with a head, ears, and short lines for arms!
The first semi-phonetic writing system was a set of 24 symbols used in Egyptian Hieroglyphics. The Phoenicians were the first to use only phonetic symbols. They had an alphabet of 22 consonants, but the vowels were not written. The Greeks were the first use us phonetic symbols for all the sounds of a language (the first pure alphabet)
The Phoenicians, because of the fact that they did not have a very good alphabet and spoke a different language they left very little written records.
The Phoenicians developed a writing system in roughly 1200 B.C.E. It was developed in order to facilitate trade throughout the eastern Mediterranean, particularily with the pre-Dark Age (or Mycenaean) Greeks and the Egyptions.
24 of the thousands of hieroglyphics are called unilaterals, and they can be considered an early type of alphabet, but they only had consonants. The first Alphabet to include vowels was the Greek Alphabet, thousands of years later.
Standard English 26-letter alphabet is used in new Zealand. Maori language is now written using the English alphabet but consisting of only fifteen characters.