The challenge was to design a portable, low-cost handheld device that could interface with a proprietary sensor and display real-time data on a touchscreen. The device needed to handle both real-time sensor data processing and user interface tasks while ensuring efficient communication between multiple components, including an LCD screen and external connections for PC interfacing. Additionally, the system had to provide multi-screen functionality, data recording, and export options, all while maintaining a seamless user experience and meeting performance requirements.