A mouse.
It allows you to move the cursor to select stuff by clicking on them.
Its ugly
For productivity purposes - A keyboard allows users to input text into a computer & a mouse or trackball allows users to control a cursor to manipulate on-screen objects. For entertainment purposes - Joysticks, game pads & other controllers allow users to control characters and/or vehicles inside computer games. The Internet allows users to communicate with each other as well as for research & education purposes.
the pointer on the computer screen is called "cursor"
A touch screen laptop allows someone to move the cursor around the screen without the aid of a mouse. One simply touches the screen to get the results they desire.
It's an input like we use mouse and keyboard in computer.
A computer's Graphic User Interface (GUI) allows the user to use a mouse to control a cursor, rather than having to type commands in text.
cursor
Usually, if NumLock is turned off, the numeric keypad to the right of the keyboard can control the cursor.
When you get your computer your cursor should be normal but if its not its not right. [Ej Chapman wrote this answer.]
The mouse or the touch-pad controls the cursor.
Yes. A GUI can be rather difficult to navigate without a mouse, but it can be done with extensive use of the Tab key and cursor keys.