input devices [2]
Electronic devices used to transmit data and commands to a computer.
shift: level 2 select 
To generate a second character or second function assigned to a key, the user depresses the shift key followed by the desired character or function key.
nonbreaking space 
Insertion of a space to keep two characters or a series of consecutive characters together on the same line.
alternate: level 3 select 
To generate a third character or a third function assigned to a key, the user depresses the alternate key followed by the desired character or function key.
control: group select 
Symbol assigned to the control key that allows a command to be executed on the keyboard without having to scroll down the menu.
return 
Movement of the cursor to the beginning of the next line; the return key also has a validation function (to confirm the execution of a command).
backspace 
Other symbol assigned to the backspace key; it deletes the character immediately to the left of the cursor.