Embark on a journey through the fundamentals of embedded systems programming with this module. Explore interfacing with keypads, mastering pull-up resistors, and detecting key press events for effective input handling. Dive into array manipulation techniques, mastering read-write operations, function passing, and element swapping. Understand the intricacies of strings in C, including literals, input methods, and manipulation techniques using scanf and scanset. Identify and leverage pre-processor directives, including conditional compilation and macro usage, for efficient code organization and optimization. By the end, you'll have a solid foundation in embedded systems programming essential for building robust applications.