This document discusses wearable computers and their evolution. It describes how wearable computers started as simple calculator watches in the 1970s and have increasingly become integrated into articles of clothing and accessories. Examples mentioned include smart watches, headbands, and rings. The document outlines some applications of wearable computers in military and medical fields. It also discusses an implementation of a Bluetooth-enabled smart ring and smart shirts that can measure vital signs. Potential issues addressed include threats to security/privacy and devices being heavy or expensive. The conclusion is that wearable computers can improve quality of life.