The keyboard has already been identified as an input device. This is a component that closely resembles a typewriter console.

While working on the PC using a keyboard, you will notice a flashing point on the VDU. This is the cursor. When you press a key on the keyboard, a character is displayed at the point where the cursor is flashing and the cursor moves one position forward. The keyboard provides different keys to perform various operations.



F1- F12 (Function keys)Used to perform special functions that depend on the software being used.
Enter or ReturnUsed to execute an instruction or data being keyed in through the keyboard
Caps lockUsed for keying in capitalized alphabets.
ShiftCapslock off: If pressed simultaneously with a character key, a capitalized alphabet is input.
Capslock on: It reverses the above effect.
Also used to input the upper symbols for keys with two symbols or characters on them.
Ctrl, AltPressed with other keys, they input special messages to the computer.
BackspaceUsed to erase the character to the left of the cursor position.
NumlockUsed to activate the numeric keys on the Numeric keypad.
Cursor keysUsed to move the cursor in the direction indicated.
Home, End, PgUp, PgDnUsed to perform special functions, with which you will become familiar during the course.
InsUsed to insert characters at the current cursor position.
DelUsed to delete characters at the current cursor position.
EscDepends on the application. Usually used to cancel a command.
Print ScreenUsed to print whatever is displayed on the screen.
SysRqSystem Required; depends on the application.

The Keys and their Functions