Comprehensive Review of Computer Numerical Control (CNC) Systems Authors Ignatius E. Ekengwu Nnamdi Azikiwe University Awka, Nigeria Kingsley I. Emeruwa Nnamdi Azikiwe University Awka, Nigeria DOI: https://doi.org/10.64383/irjss.AUG240808 Keywords: CNC Technology, Industrial Applications, CNC Systems, Manufacturing Abstract Computer Numerical Control (CNC) systems are fundamental to the advancement of modern manufacturing, fundamentally transforming how precision engineering is achieved. These systems have revolutionized the production landscape by offering unmatched levels of precision, operational efficiency, and flexibility across a wide range of industrial applications. This extensive review provides an in-depth analysis of CNC technology, tracing its historical development from early concepts to its current sophisticated implementations. It examines the essential components that constitute CNC systems, including the hardware and software elements that enable precise control and automation of manufacturing processes. The review further explores various programming techniques employed in CNC systems, highlighting how they contribute to the optimization of manufacturing workflows and the customization of production outputs. It also evaluates the broad spectrum of applications where CNC technology is employed, from intricate aerospace components to mass-produced consumer goods. In addition to outlining the numerous benefits of CNC systems, such as enhanced accuracy, reduced production times, and the ability to execute complex designs with ease, the review also addresses the challenges and limitations associated with CNC technology. These challenges include issues related to cost, technical expertise, and maintenance .Looking forward, the review anticipates future trends and innovations in CNC technology, offering insights into how emerging advancements—such as integration with artificial intelligence, machine learning, and advanced robotics—are poised to further elevate manufacturing capabilities. By examining these prospective developments, the review provides a comprehensive overview of the potential directions and transformative impacts of CNC technology on the future of manufacturing. Author Biographies Ignatius E. Ekengwu, Nnamdi Azikiwe University Awka, Nigeria Mechanical Engineering Department Kingsley I. Emeruwa, Nnamdi Azikiwe University Awka, Nigeria Mechanical Engineering Department References [1] Hsu, S. M. (1966). Numerical Control: Theory and Practice. McGraw-Hill. [2] McCarthy, T. J. (1997). Introduction to Numerical Control. Engineering Science and Education Journal. [3] Morey, B. H., V. K., & T. 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