What is the setting of I Have No Mouth, and I Must Scream by Harlan Ellison?

Ellison has provided "I Have No Mouth, and I Must Scream" with a limited, first-person narrator. Thus, all of the events of the story must be filtered through the mind and voice of Ted, one of the humans trapped by the computer AM. Because everything is told from the "I" perspective, the reader cannot ascertain what other characters are thinking or their motives for what they do. The reader can only know what the first-person narrator provides.