Design of a semiconductor-solid-circuit adder

The basic objectives of all space guidance equipments are maximum reliability and maintainability under severe environmental conditions together with minimum weight, size, and power consumption. From a number of possible approaches to the miniaturization problem, the solid-state circuit concept has been selected as the one offering the greatest potential of high reliability combined with extreme circuit compactness. To demonstrate the feasibility of this approach, the circuit of a full-adder now used in airborne digital computers for guidance was selected. The circuit consists of 17 individual circuits, seven amplifiers, eight "And" circuits, and a flip-flop.