There were earlier 1100 systems going back to the 1101 in 1951 .
The 1108 was the first 1100 Series computer designed for efficient support of multiprogramming and multiprocessing .
There were earlier 1100 systems going back to the 1101 in 1951 , but the 1108 was the first 1100 Series computer designed for efficient support of multiprogramming and multiprocessing .