Computer graphics, multimedia and communications technology are now so much a part of life for most people in the developed world, that doing without them has become almost unthinkable. This book presents 10 papers selected from the 42 papers delivered at the ICCSCT 2023, the 5th International Conference on Computer Systems and Communication Technology, held on 24 and 25 November 2023 in Kuala Lumpur, Malaysia. The conference provides a premier interdisciplinary platform for researchers, practitioners, and educators from around the world to showcase and discuss the latest innovations, trends, challenges, and solutions in the fields of computer systems and engineering, computer graphics and multimedia, and communication technology. Topics are varied, and those covered include: improving mass-gathering management using process-mining techniques; research into monocular-vision target detection and localization under non-orthographic conditions; the use of Python, Owlready and Sparql in processing the words in an ontological model of public political discourse; and the development of a 3D visualization-training system for switch-room safety procedures. Offering a varied overview of some of the recent developments and innovations in computer systems and engineering, computer graphics and multimedia, and communication technology, the book will be of interest to all those working in the field.