This course will give an overview of computer interface components and their characteristics. It will cover details discussion on some programmable interfacing ICs, sensor, hardware, and software calibration on sensor interfacing, some processing devices which can interface a computer with the real world and some output devices. This course also includes high power interface devices, LED, LCD, Seven segment display, transducers, stepper motors, and peripheral devices. In addition, it will also introduce some software simulation tools to develop an interfacing system. Some advanced topics like Human-Computer Interface (HCI), Brain-Computer Interface (BCI) would be also discussed with some case studies.