TCAS I publishes regular papers in the field specified by the theory, analysis, design, and practical implementations of circuits, and the application of circuit techniques to systems and to signal processing. Included is the whole spectrum from basic scientific theory to industrial applications. The field of interest covered includes: - Circuits: Analog, Digital and Mixed Signal Circuits and Systems - Nonlinear Circuits and Systems, Integrated Sensors, MEMS and Systems on Chip, Nanoscale Circuits and Systems, Optoelectronic - Circuits and Systems, Power Electronics and Systems - Software for Analog-and-Logic Circuits and Systems - Control aspects of Circuits and Systems.

TCAS I在電路的理論、分析、設計和實際實現，以及電路技術在系統和信號處理中的應用等領域發表定期論文。包括從基礎科學理論到工業應用的整個范圍。所涉及的領域包括：電路：模擬、數字和混合信號電路和系統-非線性電路和系統、集成傳感器、MEMS和片上系統、納米級電路和系統、光電-電路和系統、電力電子和系統-模擬和邏輯電路和系統的軟件-控制電路和系統方面。