We used letters.
The Alphabet
They started to become easier and faster. Telephones were invented and even the process of carrying letters was faster.
600-1800 ADThe Europeans found that writing on parchment with a quill pen altered the style of their writing. At first they used capital letters all the time, but later they developed faster styles with small letters. Quill Pens (firstly appeared in Seville, Spain) were the writing instrument from 600 to 1800 AD.
the sumerians invented it.
It is not really possible to say what year letters were invented. This is because it predates any historical records we have.
cavemen !!
Sequoyah
Romans.
Gutenburg first invented printing that used separate metal letters.
The typewriter was invented in the 1800s and printed letters.
aqualung
We used letters.
Nobody 'invented' it... letters are often used in maths to signify an unknown quantity.
He invented the printing press with movable letters
The Alphabet
In 1870, Thomas Edison invented the first stock ticker to print letters as well as numbers.