The AGC has three principal sections. The third section is the sequence generator which includes a portion for generating various microprograms and a portion for processing various interrupting requests. The arrowheads to and from the various registers show the possible directions of information flow. The cycle time is 12 m sec. The erasable memory is a coincident current system with the same cycle time as the fixed memory.
Instructions can address registers in either memory, and can be stored in either memory.