Explanation

The fan was invented in 1882 by Schuyler Skaats Wheeler. 

Wheeler was born in New York City on May 17, 1860.

He was the son of James Edwin and Ann Wood (Skaats) Wheeler.

Explanation

Keyboard is an input device.

Keyboard is similar to electric typewriter.

Keyboard uses serial port to connect with computer.

Keys on keyboard are of mainly three types:

Alphanumeric keys: letters and numbers 

Punctuation keys: comma, period, semicolon, etc.

Special keys: function keys, arrow keys, caps lock key, etc. 
Keyboard inventor: Christopher Latham 

Explanation

 The first handheld mobile phone was demonstrated by Martin Cooper 

- He was an engineer at Motorola  

- Invented the first handheld mobile phone in 1973  

- Made the first mobile call on April 3, 1973

That first phone was big, heavy, and had a battery life of about 30 minutes!

Using a handset weighing c. 2 kilograms (4.4 lbs).

In 1979, Nippon Telegraph and Telephone (NTT) launched the world's first cellular network in Japan.

Explanation

The atomic number was discovered by Henry Moseley in 1910.

Henry Moseley was an English physicist.

Explanation

A solar eclipse can only take place during the phase of the new moon

when the moon passes directly between the sun and Earth and its shadows fall upon Earth's surface.

Explanation

Ibn Zuhr  is known as father of Experimental Surgery.

Ibn Zuhr is the author of Al Taisir. 

AGM 28.02.28

Explanation

Microsoft was founded on April 4 1975 in the USA.

Founders:

Bill Gates and Paul Allen

Location:

Albuquerque, New Mexico

Initial purpose:

To develop and sell BASIC interpreters for the Altair 8800, one of the first personal computers

Company name:

"Microsoft" is a portmanteau of "microcomputer" and "software"

Explanation

Santorio Santorio, an Italian physician, invented the first thermoscope (early form of thermometer) around 1612.

He later developed an electrical thermometer, laying the groundwork for future temperature-measuring devices.

Explanation

Charles Babbage is known as the Father of the Computer.

He was an inventor from the UK.

He was born in 1791.

He was died in 1871.

Explanation

Gregor Mendel (from Austria) is called the Father of Genetics for his experiments on pea plants.

He discovered the basic principles of heredity and inheritance through his work.