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4. Herman Hollerith ..........................................................
5. Gottfried Wilhelm Leibniz ..........................................................
B. Write the year in which the following inventions took place.
1. First mechanical calculator ....................................................
2. First electronic computer ....................................................
3. First mechanical computer ....................................................
4. First version of Microsoft Windows released ....................................................
Hands On Creativity
Collect the pictures of early counting devices and paste them in your scrapbook.
SDG Activity
You notice many trees in your neighborhood are being cut
down. Do you think trees have some feelings or they are just
like machines? Discuss with your teacher.
Subject Enrichment
Open Word 2016, type the name of different calculating devices and their
inventors and save the file as `Evolution of Computers’.
Teacher's Corner
1. Demonstrate the Abacus and its use to the students.
2. Discuss the great breakthroughs which took place in each generation of computers.
18 iPRIME (Ver. 2.2)–V

