What are Mauchly and Eckert’s main contribution to the development of the computer?

Though the ENIAC patent was invalidated by the U.S. District Court in Minnesota, Eckert and Mauchly have nonetheless been credited by history with inventing the ENIAC, the world's first large-scale general purpose electronic computer

Explanation:

answer; /// i believe ist (al shugart);

leaning back,   no eye contact,   fidgeting in the seat