6131 DC ADDER

This document is a product specification sheet for the 6131 DC Adder module, released by Digital Equipment Corporation (DEC) on February 18, 1965. The 6131 is a Flip Chip module designed for high-speed binary addition, featuring a majority-logic carry circuit with a 10-nanosecond delay and sum logic with complementary outputs. The document details the electrical specifications for register inputs, carry inputs, sum/carry outputs, and power requirements, and includes a simplified logic diagram. The module was priced at $134.00 at the time of the announcement.