Overview of computers-First PUC
Unit 1 Overview of a computer 1.What is a computer ? or Give meaning or definition of computers(Board question 2014) A computer is an automatic electronic machine that can store,recall and process data and gives output according to the instruction given by the user. 2.Which is the earliest computing machine? The earliest computing machine is ABACUS. 3.Name the functional components of a computer? The functional components of a computer are input unit, output unit, central processing unit and memory or storage unit. What is the use of input unit The input unit is used to feed data and instructions to the computer through input devices Give any two input devices?(Board question 2015) Key board, Mouse 4.Who invented the Pascaline ? (Board question 2018) Blaise Pascal invented Pascaline . 5.What are the advantages of the machine by Leibniz over Pascaline? Leibniz calculator could perform multiplication and division It was also faster compared to Pasc...