This presentation is created as reference for

1. HISTORY OF THE COMPUTER MECHANICAL AGE MR. JESUS F. OBENITA JR.

2. JOHANN GUTENBERG -INVENTED THE MOVABLE METAL TYPE PRINTING PROCESS IN 1450

3. JOHN NAPIER -INVENTED THE “NAPIER BONES” A SET OF WOODEN RODS, ALLOWING USERS TO MULTIPLY AND DIVIDE LARGE NUMBERS AND FIND SQUARE AND CUBE ROOTS

5. WILHELM SHICKARD -INVENTS THE FIRST MECHANICAL CALCULATOR, IT CAN WORK WITH SIX DIGITS, AND CARRIES DIGITS ACROSS COLUMNS.

6. WILLIAM OUGHTRED -INVENTED THE SLIDE RULE.

8. BLAISE PASCAL -INVENTED THE MECHANICAL CALCULATOR CALLED “PASCALINE” MADE UP OF CLOCK AND GEARS AND LEVERS, AND COULD SOLVE BASIC MATH PROBLEMS

11. GOTTFRIED LEIBNITZ -INVENTED A MACHINE CALLED “STEPPED RECKONER” THAT COULD MULTIPLY 5 DIGIT AND 12 DIGIT NUMBERS YIELDING UP TO 16 DIDGIT NUMBER

14. Joseph Marie Jacquard -developed an automatic loom that was controlled by punched card.