Wearable computers, also known as "wearables", are computers that are designed to be worn on the body. Wearables are usually equipped with sensors that can detect a variety of environmental factors, such as the user's heart rate, body temperature, and level of activity. This information can be used to provide the user with feedback about their current state, or to trigger alarms or other actions in response to changes in the environment.
One of the earliest examples of a wearable computer was the Apollo Guidance Computer, which was worn by astronauts on the Apollo moon missions in the 1960s and 1970s. More recent examples include Google Glass, which is a head-mounted display that allows the user to see information overlaid on their field of vision, and the Apple Watch, which is a wrist-worn device that includes a variety of sensors and can be used to perform many of the same functions as a smartphone.
Wearable computers are becoming increasingly popular as they become more advanced and less expensive. They offer a variety of potential benefits, such as the ability to monitor one's health and fitness, to receive notifications and updates without having to look at a traditional computer screen, and to interact with the world around them in new and innovative ways.
