Semester :-1
Unit:-2
Discuss about the keyboard.?
Ans:-
An input device Is used to feed data and instructions into the computer. The keyboard is the main input device for computers.
Using a keyboard, the user can type a document,use keystroke shortcut,access menus,play games and perform numerous other tasks.most keyboards have between 80 and 110 keys, which include the following:
Typing keys :-
These include the letters of the alphabet.The layout of a keyboard is known as QWERTY for its first six letters. The QWERTY pattern has been a standard right from the time computer keyboards were introduced.
Numeric keys:-
These include a set of 17 keys, arranged in the same configuration found on calculators to speed up data entry of numbers.when the num lock key is set to on, the user can type number dot or input the symbols/,*,-, and+. When the num lock key is set to off , the numeric keys can be used to move the cursor on the screen.
Function keys :-
These are used by applications and operating systems to input specific commands.they are often placed on the top of the keyboard in a single row . function key can be programmed so that their functionality varies from one program to another.
Control keys:-
These are used to handle control of the cursor and the screen. Four arrow keys are arranged in an inverted T-type fashion between the typing and the numeric keys, and are used to move the cursor on the screen in small increments. In addition to the arrow keys, there are other cursor keys ( or navigational keys ), such as :
- Home and End to move the cursor to the beginning and end of the current line , respectively
- Page up and page down to move to the previous and the next pages , respectively
- Insert to enter a character between two existing characters
- Delete to deleted a character at the cursor position
Good information bro
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