Abstract: For a computer system having a central processing unit, an external storage unit which records data in a count-key-data (CKD) format, and a storage control unit with a cache memory for controlling data transfer between the external storage unit and the central processing unit, a computer system and data search method is provided which can prevent the performance of the central processing unit from being lowered and can eliminate signal transfer between the central processing unit and storage control unit during most of a data search operation period, by disconnecting the storage control unit from the central processing unit. During the data search operation, upon reception of a search command for the first record, a quasi completion report is issued to disconnect the storage control unit from the central processing unit. The storage control unit executes the search operation by using data loaded in the cache memory of the storage control unit. After data is searched, a search completion report is issued.

Abstract: The apparatus provides for continuously manufacturing a flat twisted cable composed of a plurality of single-conductor pairs having alternate oppositely directed twisted portions with straight portions therebetween. The apparatus has a multi-stage single-conductor pair supply unit, a twisting unit, a reciprocatingly movable untwist preventing unit, a lateral spacing and converging unit, a reciprocating movable welding unit, and a take-up unit. The untwist preventing unit has piston operated pins for preventing the propagation of the twist from the preceding and following twisted portions of the flat twisted cable to the straight portions of the single-conductor pairs thereof. The welding unit has a reciprocatingly movable welder. The welding unit commences movement together with the straight portion when the latter reaches a position within the welder which performs the high frequency induction welding of the insulation coverings of straight portions to each other during movement.