Download - History of Keyboard
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http://localhost/var/www/apps/conversion/tmp/scratch_5/keyboard.pptx -
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The keyboard is an important peripheral
that is used as an input device of acomputer and many other devices.
The keyboard is used to enter
letters, numbers and other special
function keys, which are used for
some special functions.
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The invention of the moderncomputer keyboard began with theinvention of the Typewriter.
Christopher Latham Sholes patentedthe typewriter that we commonly use
today in 1868. The RemingtonCompany mass marketed the firsttypewriters starting in 1877.
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Types
of
Keyboard
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1.Ergonomic KeyboardsThe ergonomic keyboards are designed consideringthe ergonomic aspect of the keyboards. It is specially
designed as per the comfort of the hands and wrist of
the keyboard user. The ergonomic keyboards are
designed to prevent the carpal tunnel syndrome, whichcauses numbness and tingling sensation in hands and
fingers after typing for a long duration. These keyboards
also help the keyboard user maintain a comfortable
position..
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2.Compact Keyboard
The sizes of keyboard goes on increasing, especially,those of the ergonomic keyboards. The ergonomic
keyboards are designed bigger to accommodate many
keys that perform special functions. The compact
keyboards are slim and usually do not have the numerickeypad that is present on the right side of the other
keyboards. Some compact keyboards even include a
rubber pad that can be used instead of the mice. These
keyboards are not very small in size, but offer portabilityduring travel and storage.
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Special
Keyboards
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Internet Keyboards
The internet keyboards are designed to increase the comfort level of
the internet user. The internet keyboards have hot-keys for the homepage of the web browser, inbox and the favorites menu on yourcomputer.
Multimedia and Gaming Keyboards
The multimedia and gaming keyboards are designed for playingaudio and has hot-keys for volume control, play, stop and muteoperations. The gaming keyboards are designed for the convenienceof the gamers and these types of keyboards provide the requiredcontrols on the keyboards like back lighting.
Virtual KeyboardsThe Virtual Keyboard are not actually physical keyboards, but theyare simulated using a software. Usually, the virtual keyboards are usedin the PDA.
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Alt + FFile menu options in current program.Alt + EEdit options in current program.F1Universal Help in almost every Windows program.Ctrl + A
Select all text.Ctrl + XCut selected item.Shift + DelCut selected item.Ctrl + CCopy selected item.Ctrl + InsCopy selected item.
Ctrl + VPaste.Shift + InsPaste.Ctrl + HomeGoes to beginning of document.EndGoes to end of current line.Ctrl + End
Goes to end of document.Shift + HomeHighlights from current position to beginning of line.Shift + EndHighlights from current position to end of line.Ctrl + Left arrowMoves one word to the left at a time.Ctrl + Right arrowMoves one word to the right at a time.
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1. To move the cursor you can use the arrow key
situated on the keyboard to move the cursor on the
monitor2.Less expensive
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1. It can potentially destroy your social life and
interactions with humans if you do not maintain the
balance.2. It may effect to the destruction of your eye sight due
to radiation.
3. It may cause pimples and wrinkles.
4. It may damage your studies and life.5. Too much time in front of monitor may adverse effect
your eye sight and can also make you fat.
6. The way it distracts and can deviate our thoughts and
activities towards unproductive activities.
7. It could cause violation of privacy, impact on labor
force, health risks, impact on environment, distractionfrom work, and possible antisocial influences.
8. getting away from their real life and getting into bad
lines