Ancient Egyptian scripts

Origins of Egyptian Hieroglyphs

The ancient Egyptians believed that writing was invented by the god
Thoth and called their hieroglyphic script "mdwt ntr"
(god’s words). The word hieroglyph comes from the Greek hieros
(sacred) plus glypho (inscriptions) and was first used by Clement
of Alexandria.

The earliest known examples of writing in Egypt have been dated to
3,400 BC. The latest dated inscription in hieroglyphs was made on the
gate post of a temple at Philae in 396 AD.

The hieroglyphic script was used mainly for formal inscriptions on
the walls of temples and tombs. In some inscriptions the glyphs are
very detailed and in full colour, in others they are simple outlines.
For everyday writing the hieratic
script was used.

After the Emperor Theodsius I ordered the closure of all pagan temples
throughout the Roman empire in the late 4th century AD, knowledge of
the hieroglyphic script was lost until the early 19th century, when
a French man named Jean-Francois Champollion (1790-1832) managed to
decipher the script.

Notable features

• Possibly pre-dates Sumerian Cuneiform writing – if this is true,
  the Ancient Egyptian script is the oldest known writing system. Another
  possibility is that the two scripts developed at more or less the
  same time.
• The direction of writing in the hieroglyphic script varied – it
  could be written in horizontal lines running either from left to right
  or from right to left, or in vertical columns running from top to
  bottom. You can tell the direction of any piece of writing by looking
  at the way the animals and people are facing – they look towards the
  beginning of the line.
• The arrangement of glyphs was based partly on artistic considerations.
• A fairly consistent core of 700 glyphs was used to write Classical
  or Middle Egyptian (ca. 2000-1650 BC), though during the Greco-Roman
  eras (332 BC – ca. 400 AD) over 5,000 glyphs were in use.
• The glyphs have both semantic and phonetic values. For example,
  the glyph for crocodile is a picture of a crocodile and also represents
  the sound "msh". When writing the word for crocodile, the Ancient
  Egyptians combined a picture of a crocodile with the glyphs which
  spell out "msh". Similarly the hieroglyphs for cat, miw,
  combine the glyphs for m, i and w with a picture of a cat.
  

Used to write:

Egyptian, an Afro-Asiatic language spoken in Egypt until about
the 10th century AD. After that it continued to be used as a the liturgical
language of Egyptian Christians, the Copts, in the form of
Coptic.

Hieroglyphs representing single consonants

These glyphs alone could be used to write Ancient Egyptian and
represent the first alphabet ever divised. In practice, they were rarely
used in the fashion.

Numerals

By combining the following glyphs, any number could be constructed.
The higher value signs were always written in front of the lower value
ones.

Sample texts

Transliteration: iw wnm msh nsw, this means “The crocodile eats the king”.

Translation

All human beings are born free and equal in dignity and rights. They
are endowed with reason and conscience and should act towards one another
in a spirit of brotherhood.
(Article 1 of the Universal Declaration of Human Rights)