Human: When did the QWERTY keyboard first appear? Assistant: 
The QWERTY keyboard was invented in 1873 by Christopher Latham Sholes. Sholes, who was a journalist, was trying to create a more efficient way to type. He created a keyboard with a layout that was easier to use and more efficient than the earlier keyboard layouts. The QWERTY keyboard was first used in the Sholes’ Type Writer, which was the first commercially successful typewriter. The QWERTY keyboard layout was popularized in the United States and is still widely used today.