Abstract: This invention makes it possible to quickly and easily register a drawing and related information. A parent drawing that is created using a drawing creation system (CATIA), accompanying information, and the object part information are given ID information containing the same number and correlated with each other and registered in the conversion server. The ID information given to the accompanying information is the number of the parent drawing to which an ID code indicating that the information is accompanying information is added, and the ID information given to the object part information is the number given to the parent drawing to which an ID code indicating that the information is object part information.

Abstract: [Object] This invention makes it possible to quickly and easily register a drawing and related information.

Abstract: [Object] This invention make not only makes it possible do away with discrepancies in the set prices of repair parts, but also makes it possible to reduce the time for completely setting the selling prices for the repair parts, and makes it possible to simply set the prices for repair parts even for a new person in charge.

Abstract: A drawing data management system comprises a drawing database storing drawings and a drawing data management server connected to the drawing database and retrieving from the drawing database the drawing requested by a user. According to one aspect of the invention, the drawing data management server is configured to extract the producer code corresponding to the input part number from an external database storing a table for correspondence between part numbers and producer codes related to the part numbers. The drawing data management server is further configured to obtain conditions for delivering drawings, corresponding to the input part number, from a condition table organized by producer, storing conditions for delivering drawings, set for respective producer codes. Accordingly, the system is able to output the drawing corresponding to the input part number, according to the obtained conditions for delivering drawings.

Abstract: A phase-locked loop circuit, in which it takes a very short time until the internal clock becomes stable while switching external clocks, is provided with a phase comparison part, a voltage controlled oscillating part, plural dummy clock producing parts, a selection supply part and a monitor control part. The phase comparison part outputs a voltage corresponding to a phase difference between two inputted clocks. The voltage controlled oscillating part outputs an internal clock of a frequency corresponding to the voltage outputted from the phase comparison part. The plural dummy clock producing parts produce dummy clocks by dividing an internal clock outputted from the voltage control oscillating part, respectively, while resetting the respective dividing operations in synchronous with inputted external clocks.