Leonardo Da Vinci was an Italian artist and inventor. He was
a man of extraordinary genius. He seemed to master any subject to which he
turned his inquiring mind. One of his most famous paintings is the Mona Lisa.
The gentle smile of La Gioconda or Mona Lisa has left people wondering as to
what she is smiling at. While making this portrait, Leonardo used musicians,
singers and jesters to keep Mona Lisa smiling as he painted. He made thousands of
drawings and kept note of his observations in a secret back to front mirror
writing. He wrote his lines from right to left with each letter reversed. When
viewed into a mirror, it looks like a normal writing. He worked as an engineer
for Italian nobles and for the French king and designed many forts and canals.
These canals have locks too. He drew sketches of helicopter, a flying machine,
a machine gun, even before they were invented. He was also a good musician and
singer.
Friends you know a keyboard is the most important part of a computer. It consists of different sets of keys that help us to enter information into the computer. Today we will discuss about keyboard and its keys types and use. A standard keyboard has 104 keys. Types of Keys in a Keyboard: Alphabet Keys Number Keys Special Keys Function Keys Navigation Keys 1. Alphabet Keys: 26 alphabet keys are present on a keyboard from A to Z. these keys are not present in the alphabetical order. These keys are used to type words, sentences or paragraphs. 2. Number Keys: These keys are used for typing numbers. These keys are present above the top row of the alphabet keys and also present on the right side of the keyboard. 3. Special Keys: Keyboard has more special keys such as Space bar Key, caps lock key, backspace key, shift key, enter key, symbol keys and tab key etc. 4. Function Keys: 12 function keys are present on a keyb...
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