1.
Introduction of Computer technology
Keyboard
Presentedby:-
> Afaque Ahmed
> Zahir Nabi
Teacher:
Noor Nabi

2.
Getting to know more about Keyboards

3.
Getting to know more about Keyboards
• (Def) Input device used to enter character and functions into
the computer system by pressing buttons or keys.
• A standard keyboard includes about 100 keys; each key sends
different signal to the CPU.
• For now and the forseeable future, keyboarding remains the
most common way to enter text and other data into a
computer.

4.
How to keyboard works ??
KEYBOARD
CONTROLLER
KEYBAORD
BUFFER
SYSTEM
SOFTWARE

5.
History of keyboard
1. The history of computer keyboards begins indirectly with
world’s first ever commercially successful typing machine,
which was invented a man called Christopher Latham Scholes
during 1873. by
2. It was further modernized into printing
telegraph by Simens and Halske in
St: Petersburg Russia(1900).

6.
History of keyboard
• First layout of these typewriters was put into alphabetical
order.
• It worked for some time, it had big flaw; Jamming of keys.
• To avoid jamming (increase distance between the keys)
Qwerty layout was introduced. Which is still in use now not
only on typewriters or keyboards but on virtual touchpads
too.
• There were no keyboards till late seventies, people used to
buy electric typewriters for their mainframes or they had to
manually enter the key by keyboard switches on front panel of
computer for laborious or industrial work etcetra…

7.
History of keyboard
• It wasn’t until the late seventies that standardized computer
keyboards finally became available, thanks to far-sighted
companies like Apple, Radio Shack and Commodore.

8.
Types of KeyBoards
• One the basis of layout, here are few types:-
1) Ergonomic Keyboards 2) Compact Keyboards

9.
Types of KeyBoards (Continued)
3) Multimedia and Gaming Keyboards 4) Virtual Keyboards

10.
Types of KeyBoards (Continued)
Types On the Types of Keyboards on
basis of connection the basis of Keys order:-
type :- 1) Alphabetical keyboard
1) Bluetooth 2) Qwerty keyboard
2) Infrared Keyboards 3) Dvorak keyboard
3) Radio frequency keyboards 4) Azerty keyboard
4) Port keyboards 5) Qwertz keyboard

11.
Types of KeyBoards (Continued)
> Dovrak keyboard > Azerty Keyboard
> Qwertz Keyboard

12.
Types of keyboard keys
The Different keys on keyboards are :-
a) Alphanumeric keys
b) Modifier keys
c) Numeric Keys
d) Function keys
e) Cursor Movement keys
f) Special purpose keys

13.
Types of keyboard keys
a) Alphanumeric keys b) Modifier Keys
•
c) Numeric Keys

14.
Types of keyboard keys
d) Function keys e) Cursors keys
f) Special Purpose keys

15.
That’s all folks..!!
Thank you all for bearing us ;))