The input machine which originated in the United States around 1880s is a ___________a.Mouseb.Keyboardc.Bar Code Readerd.Joystick

The input machine that originated in the United States around the 1880s is known as a Keyboard. The concept of the keyboard can be traced back to devices such as the typewriter, which was developed in the early 19th century and became popular by the 1880s.

Keyboards allow users to input text and control computer systems by pressing keys that correspond to letters, numbers, and other symbols. The standard QWERTY layout was designed for typewriters and has been adopted by computer keyboards, making it the most commonly used input device for text-based data entry.

In comparison, a mouse and joystick are relatively modern concepts that facilitate interaction with digital interfaces, while a bar code reader is a technology used to scan and decode bar codes, which became popular much later in retail and inventory systems.

Thus, in conclusion, the correct answer is: b. Keyboard.