The research work is focused at developing a system prototype for an enhanced version of the Yorùbá language menu option of the ATM, introducing Yorùbá tone mark built on an enhanced translation equivalence model in order to assist users who are monolingual only in Yorùbá language to effectively interact with the system. To achieve the objective of the work, the researcher employed the equivalence translation model designed for the work and adopted traditional structured systems analysis and design methodology (SSADM) to build the system prototype. Java packages such as Java Swing, Classes and Java AWTwas incorporated in the system development. Netbean IDE was used in designing the simulation software due to its effectiveness in designing state-of-the-art GUI. The software testing and investigation was conducted engaging specialists to provide stakeholders with information about the quality and function of the system model. The performance of the system prototype showed that the new translation model is not only an improvement over the existing paradigm, but also will vastly stimulate user’s response and expansion of the ATM usage in the interior parts of the country. Keywords: Translation Model, SSADM, Java Packages, ATM Network, Host Processor