Why astronauts needed the guidance computer?

Astronauts needed the guidance computer to automate critical navigation and control tasks during space missions, ensuring precise trajectory calculations and adjustments. The guidance computer processed real-time data from various sensors, enabling astronauts to focus on other essential aspects of the mission. It also provided vital assistance in landing maneuvers and rendezvous operations, significantly enhancing safety and mission success. Overall, the computer was crucial for managing the complexities of space travel beyond human capability alone.