Abstract: A bus control circuit controlled by a microprogram in which a bus is employed to transfer data among a plurality of processing units. A data storage circuit connected to the bus stores the data appearing thereon which is used for carrying out microinstructions until the time when a particular microinstruction is inhibited from being executed. The storage circuit stores the last data which appeared on the bus for the microinstruction but receives an interrupt signal which prevents the storage of any new data. Then, when the execution of the microinstruction is resumed, the last stored data in the storage circuit is transferred to the data bus for performance of the microinstruction.

Abstract: A connector for distribution equipment, comprising a cylindrical outer conductor fixed to a casing, a substantially cylindrical insulator inserted in the outer conductor, an inner resilient conductive member inserted and so retained in the insulator, porjections provided radially inward on an opening formed on a portion through which an internal space of the casing and an internal space of the outer conductor communicate with each other, and flexible legs provided projectingly further rearward of a rear end surface of the insulator and having claws formed radially outward on the nose portion thereof. The insulator is inserted in the outer conductor with the flexible legs bent radially inward, and, as a result of the returning of the legs at instant when the claws of the leg come in across the projection of the opening, the insulator can be mounted and so fixed in the outer conductor through engagement of the claws and the projections.