• At around 2000 BC the Phoenicians
created symbols that expressed
single syllables and consonants
(the first true alphabet)
• Greek adopted the Phoenician
alphabet and added vowels
• Romans gave the letters Latin
name to create the alphabet we
Papers and pens
• Sumerians – stylus and wet clay
• Egyptians – papyrus plants
• Chinese – made paper from rags
Books and Libraries
(permanent storage device)
• Mesopotamia – religious leaders
kept the earliest book
• Egyptians – kept scrolls
• Greeks – (600 BC) fold sheets of
Papyrus vertically into leaves and
bind them together.
First Numbering System
• Egyptian – Vertical lines (|)for numbers 1 – 9
- U or O – 10
- coiled rope – 100
- lotus blossom for 1000
• Hindus – (100 – 200 AD) 9 digit numbering
• 875 AD the concept of zero was developed.
The First Calculator
• Abacus – was man’s first recorded
adding machine. Invented in
Babylonia and popularized in China.
First Information Explosion
• Johann Guttenberg – Movable metaltype printing process in 1450.
The first general purpose
• John Napier – (1614) a Baron of Merchiston,
Scotland invented LOGS (Logarithm).
• LOGS – allows multiplication and division to
be reduce in addition and subtraction.
• 1614 – Arabian Lattice – lays out a special
version of the multiplication tables on a set of
four-sided wooden rods.(multiply, divide large
numbers and find square and cube root)
• Telephone and Radio
Alexander Graham Bell – 1879 - developed
the first working telephone.
Guglielmo Marconi – 1894 – (RADIO)
discovered that electrical waves travel through
space and can produce and effect far from the
point at which it originated.
• George Boole – 1852 – developed
the binary algebra known as Boolean
• Pehr and Edward Scheutz – 1853 completed a Tabulating Machine,
capable of processing fifteen digit
numbers, printing out result and
rounding off to eight digits.
Dorr Felt – 1885 – devises the comptometer, a
key driven adding and subtracting calculator.
Comptograph containing a built in printer
Herman Hollerith – father of information
Punched Card – provided computer
programmers with a new way to put
information into their machines.
He founded the Tabulating Machine Company ,
later became the Computer Tabulating
Recording Company and International
Business Machines Corporation (IBM)