DTFT and DFT. Z-transform and inverse Z-transform. Stability and causality of DT systems. Inverse systems. Impulse response and frequency response. Transient-state response and steady-state response. Design and realization of FIR filters. Students are advised to take ENGG2030 before taking this course. (Not for students who have taken ELEG3410. Prerequisite: ENGG2030 or ESTR2206 or consent of the instructor.)