Universal bus functions are those that are commonly used in systems to allow for maximum flexibility in the data communication between devices. These functions include handshaking protocols, addressing methods, and error detection/correction techniques. Handshaking protocols allow for two devices to communicate and confirm the correctness of the transmitting data, while addressing methods allow for different devices to be identified within the bus system. Error detection/correction techniques are used to ensure that transmitted data is correct before it is further processed by other devices. Universal bus functions are important in the design of modern electronic systems and provide a safe and reliable way for communication between multiple devices.