1. Who invented Laptop ?

Answer:

Adam Osborne in 1981.

2. Who invented Air Conditioning ?

Answer:

Willis Carrier in 1902

3. Who invented Laser ?

Answer:

Charles H. Townes

4. Who invented colour television ?

Answer:

Peter Carl Goldmark

5. Who invented Open Heart Surgery ?

Answer:

Dr. Daniel Hale Williams

6. Who invented Steam Engine (Piston)

Answer: Thomas Newcomen of Britain in 1712

7. Who invented HIV ?

Answer: