The correct answer is: E. All of the above.
A computer is any device that can be programmed to carry out sequences of arithmetic or logical operations automatically. Since a calculator, cash register, automotive controller, and desktop computer are all devices that can be programmed to carry out sequences of arithmetic or logical operations automatically, they are all computers.
A calculator is a small, portable electronic device that is used to perform arithmetic calculations. Cash registers are devices that are used to calculate and record sales transactions. Automotive controllers are devices that are used to control the various systems in an automobile. Desktop computers are personal computers that are designed to be used on a desk.
All of these devices are computers because they can be programmed to carry out sequences of arithmetic or logical operations automatically. This means that they can be used to perform a variety of tasks, such as calculating numbers, recording sales transactions, and controlling the systems in an automobile.