Later that month Babbage invited Lovelace to see the prototype for his Difference Engine .
Lovelace first met Charles Babbage in June 1833 , through their mutual friend Mary Somerville .
Later that month Charles Babbage invited Lovelace to see the prototype for Charles Babbage 's Difference Engine .
Lovelace first met Charles Babbage in June 1833 , through their mutual friend Mary Somerville .