Keyboard and its uses

keyboard and its uses

1. CUMPUTER KEYBOARD
Preparedby:GhulamQadir
DepartmentofSociology
Universityofjhang

2. What is keyboard

3. What is Computer Keyboard?
A keyboard is a portable wired or wireless electronic device that contains
all the alphabets, numerics, symbols and special characters, which is
used for entering input data into a laptop/ desktop computer system.
The various types of computer keyboards typically used by computer
users for different purposes are a qwerty keyboard, a gaming keyboard, a
virtual keyboard and a multimedia keyboard. Based on the connectivity
options used for a keyboard to connect with a computer, it is classified as
a wired keyboard, a wireless keyboard, a Bluetooth keyboard and an USB
keyboard.

4. Type of keyboard
Keyboards are classified based on the size and
their mode of usage. Those types are discussed
below:

5. 1. Multimedia Keyboard

6. Multimedia Keyboard
Thekeyboardthathasallmultimediabuttonsiscalledmultimedia
keyboard.Thebuttonsincludeplay,pause,previous,next,volumeup,
volumedown,muteandspecialbuttontolaunchmedia.Also,a
buttontolaunchabrowser,mycomputer,calculatorisavailable.

7. 2. Mechanical Keyboard

8. 2.Mechanical Keyboard
Theprimitivekeyboardwhichusesphysicalbuttonsfor
eachkeyiscalledamechanicalkeyboard.Itmakes
noisewheneachkeyispressed.Abuttonispushed
downandanelectricalsignalissenttothecomputer
devicewhichthenshowsthecharacters.

9. 3. Wireless Keyboard

10. 3. Wireless Keyboard
Bluetooth, IR technology or Radio Frequency is used to connect the keyboard
with the computer device. We can port the keyboard and the parent system is
not needed near the keyboard. These keyboards are lightweight and smaller
in size. These keyboards should have a transmitter and trans-receiver.
Transmitter sends the strokes from the keyboard as radio waves which are
received by trans-receiver kept near parent device.

11. 4. Virtual Keyboard

12. 4. Virtual Keyboard
Thekeyboardusedinsmartphonesiscalledavirtualkeyboard.
Thiskeyboardappearswhenneededanddisappearswhen
typingiscompleted.Thiscanbeautomaticallysetasperneed.
Alsointhewindowssystem,wecanuseavirtualkeyboardthat
appearsonthescreen.Thereisnophysicalobjecttocarryfor
avirtualkeyboard.

13. 5. USB Keyboard

14. 5. USB Keyboard
UniversalSerialBusKeyboardhasaUSBstickwithawirewhichhas
tobeinsertedintotheUSBportofthesystem.Andthenthekeyboard
workswell.Whilerebootingthesystem,thekeyboardisnot
supportedandhencetheusersmayfaceanissue.Installationof
suitabledrivershelpstoresolvethisissue.

15. 6. Ergonomic Keyboard

16. 6. Ergonomic Keyboard
Thiskeyboardismainlydesignedforuserswhousebothhandsfortyping.
Theadvantageofthiskeyboardislessmusclestrainandcarpaltunnel
syndromeforusers.Thekeyboardisbuiltwiththeviewofergonomics.This
keyboardisexpensiveandnotaffordableforcommonpeople.

17. 7. QWERTY Keyboard

18. 7. QWERTY Keyboard
TheearliertypewritershadkeysintherangeQWERTY duetothe
arrangementofstrings.Earlycomputerkeyboardswerealsobuiltinthe
samemannerfortheeaseofusefortypewriterusers.Thiskeyboardisthe
mostcommononeusedbyallofusandhenceneedsnointroduction.

19. 8.Gaming Keyboard

20. 8.Gaming Keyboard
Thekeyboardthathasveryfewkeysspecificforgamersiscalledgaming
keyboard.Graphicsarealsoincludedinthekeyboard.W,S,D,Aandarrow
keysaretheonlykeysyoucouldfindinthiskeyboard.Thedesignissogood
thatanyonecouldfallinlovewiththekeyboard

21. 9. Chiclet Keyboard

22. 9. Chiclet Keyboard
Thekeysaresquare-shapedwithroundededgesinthiskeyboard.The
technologyvariesfordeviceswhichmakesthisspecial.Buttonsare
attachedwithmembranesoftheswitchesinthekeyboardandthisis
usedinalmostallthedevicesnow.

23. 10. Membrane Keyboard

24. 10. Membrane Keyboard
Thesekeyboardsusepressurepadsandhavecharactersprintedona
flexiblesurfacecalledmembrane.Thecostisverylessforthese
keyboards.Buttheinaccuracyintypingandgamingmadethemlose
theimportance.

25. 11. Thumb Keyboard

26. 11. Thumb Keyboard
Thesmallerkeyboardwithfewerkeysoronlynumericcharactersis
calledathumbkeyboard.Thesearemostlyusedforarithmetic
operationsandalsoforgaming.Thesizeofthiskeyboardisjustthumb-
size.

27. 12. Flexible Keyboard

28. 12. Flexible Keyboard
Thekeyboardsmadeofsiliconewhichhasmostofthekeysandflexiblein
appearanceiscalledaflexiblekeyboard.Thedistancebetweenthekeysare
less.Thekeyboardsaremeantforrollingandarenotfoldable.

29. 13. Laptop Sized Keyboard

30. 13. Laptop Sized Keyboard
Thekeysarereducedandthespacebetweenkeysarelessinthistypeof
keyboard.Thesearespeciallydesignedforlaptops.Mostkeyboardsdonot
havenumerickeypadsandsomefunctionsareincorporatedwithotherkeys
onthekeyboard.

31. 14. Backlit Keyboard

32. 14. Backlit Keyboard
Thekeyshavelightswhichhelptheuserstotypeeveninthedark.
Thesekeyboardsareavailableingamingandtraditionalkeyboards.

33. 15. Magic Keyboards

34. 15. Magic Keyboards
ThesekeyboardsaremanufacturedbyMacandaresupportedbythebattery.
Thedesignisgoodandmakeseveryonehavethefeelofthekeyboard.

35. 16. Bluetooth Keyboard

36. 16. Bluetooth Keyboard
ThekeyboardisconnectedwiththesystemusingBluetoothandhencethe
USBportcanbeusedforotherpurposes.Thiskeyboardprovidesflexibility
tothewiredkeyboard.

37. 17. Chorded Keyboard

38. 17. Chorded Keyboard
Alimitednumberofkeyshelptheusertoportthekeyboard
anywhere.Acombinationofsomekeyshelpstoproducethedesired
characteristics.Thekeyboardissmallinsizeandisnotcommercially
successfulasotherkeyboards.

39. Uses of Keyboard
Herewehavepointedouttheusesofthekeyboard.
1.Userscantypethelettersandnumbersusingthekeyboard.Also,
somespecialcommandscanbedoneusingthekeyboard.Onlywiththe
keyboard,wecaninputdata.
2.Mostofthefunctionscanbeperformedbyakeyboardwithoutthehelp
ofthemouse.Functionkeysandcontrolkeysareusedforspecial
functionsdonebymouse.
3.Shortcutkeysareusedtoaccessanyfilesfromthesystemsothat
mouseusecanbeavoided.

40. Controlkeyandescapekeycanbeusedinmostofthefunctionsforvarious
purposes.
Touchscreenkeyboardsaremostlyinusenowadaysandinthefuture,thesemay
bereplacedbyAugmentedRealitykeyboards.Newkeyboardsareflexibleand
morecustomizedthantraditionalones.Maybeinthefuture,thedatacanbe
inputtedbyothermeansthanthekeyboard.Themindsettowelcomeallchangesis
neededforthegeneration.
ThanksYou
Presentby:
Ghulamqadir