history of keyboard

7/29/2019 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

history of keyboard

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