Subject :ICSO Class : Class 4
Select the INCORRECT match.
A Abacus – First calculating device. It was invented in the 16th century in China.
B Napier’s Bones – It was used for addition, subtraction, multiplication and division, made by Sir John Napier.
C Pascaline – First electro-mechanical calculator, invented by Blaise Pascal.
D Difference Engine – First mechanical computer, designed by Charles Babbage.
Ans 1:
Class : Class 8
D
Ans 2:
Class : Class 6
C
Ans 3:
Class : Class 7
Option - C
Ans 4:
Class : Class 4
Ans 5:
Class : Class 4
Not D the answer is C
Ans 6:
Class : Class 6
Ans 7:
Class : Class 5
Ans 8:
Class : Class 5