What key is pressed to capitalize letters on the left half of the keyboard?

To capitalize letters on the left half of the keyboard, the Left Shift key is the appropriate choice. When the Left Shift key is pressed in combination with a letter key on the left side of the keyboard, it allows that letter to be inputted as an uppercase character.

The Left Shift key specifically affects the characters on the left half of the keyboard, which generally includes letters such as A, S, D, F, G, and so on. This key is designed for quick access to uppercase letters while still allowing for the use of other characters without requiring a toggle, like the Caps Lock does.

This is particularly useful for touch typists and others who need to type efficiently, as it allows for the transition between uppercase and lowercase without hinderance. Thus, using the Left Shift key is essential for capitalizing letters quickly and effectively.