Rather than using a clutch to engage the transmission, a fluid flywheel, or torque converter is placed in between the engine and transmission. It is possible for the driver to control the number of gears in use or select reverse, though precise control of which gear is in use may or may not be possible.
So you've entered information into your computer. How do you get it back out? Here's a look at output devices such as monitors, speakers, printers and eBooks. Business 104: Information Systems and Computer Applications / Business Courses.
The same is true with a computer, although computers are considerably more complex. Anything that provides input to the system is an input device. Anything that allows the system to relay an internal state to something else is an output device. Some devices naturally act as both. For example, your connection to the Internet serves as both an input and an output device.