Buffers, drivers, receivers, and transceivers are digital logic components used to interface between different parts of a digital system or between digital systems and external devices. Buffers amplify and condition digital signals to ensure proper signal integrity and drive capability. Drivers provide higher current drive capability to effectively interface with external loads. Receivers receive and interpret digital signals from external sources. Transceivers combine the functionality of drivers and receivers, enabling bidirectional data communication over a single interface. These logic components play critical roles in signal transmission, reception, and interfacing in various digital systems and communication protocols.