HISTORICAL DEVELOPMENT OF COMPUTER DEVICES 1 (PRE COMPUTER AGE TO 19TH CENTURY) - SS1 NOTES
HISTORICAL DEVELOPMENT OF COMPUTER DEVICES 1 (PRE COMPUTER AGE TO 19TH CENTURY) INTRODUCTION Man has put every effort to have a better method of calculation. These devices were developed for better calculations. The 19th Century Pre Computer Age devices are: 1. Abacus 2. Napier's Bone 3. Slide Rule 4. Pascal's Calculator 5. Leibnitz Multiplier 6. Jacquard's Loom 7. Charles Babbage Difference Engine 8. BABBAGE’S ANALYTICAL ENGINE 9. LADY ADA LOVE LACE 10. Hollerith's Census Machine 11. Borough's Machine (1) ABACUS : This is the first calculating device invented by Chinese. It is made up of a frame divided into two parts by a horizontal bar and vertical threads. It is also known Soroban in Japan and Suan Pan in China. It is used for adding and subtracting numbers. (2) JOHN NAPIER BONE : In 1917, Scotsman named John Napier invented logarithm which are a technology that allows multiplication. It consists of a set...