IT Project Management

computer studies HISTORY OF COMPUTING   Since the creation of man, a significant amount of human activities has been ascribed to organizing and processing information so that it could be more easily presented for easy comprehension. Many devices have been used in the past before the advert of computer. It is then necessary to vividly look into their evolution. Early computing machines: 1. Abacus (-2500BC) : This is a hand- held device made of beads stung on rods in a frame. The rods correspond to positions of the digits while the beads correspond to the digits. 2. Napier’s Bone (2500BC): This was invented by John Napier’s (1550 - 1617). This consists of small rods with appropriate markings on them. It is a mechanical aid to computation that consists of nine such rods (called bones) with one for each digit 1 through 9. He also invented logarithms which made possible to do division and multiplication by performing addition and subtraction. 3. Slide Rule (1600AD) by William Oughtred (1575