Abstract: In this invention, at least one of a plurality of kinds of information which include a component code, manufacturer model number, and risk information associated with a component, and pertain to the component is input to acquire a plurality of pieces of information which are found by searching a plurality of databases on the basis of the at least one input information that pertains to the component, and pertain to the component such as a component code, manufacturer model number, risk information associated with the component, and the like.

Abstract: In a personal computer wherein a digital circuit and an analog circuit commonly use the same power supply, a low-pass filter is inserted in a power supply line of an analog circuit to remove switching noise generated from the digital circuit or the power supply, thereby preventing the switching noise from being supplied to the analog circuit and hence output image and sound quality from being degraded due to interference by the switching noise in the analog circuit.

Abstract: When a FORMAT COMMAND is executed, a track density data indicating a track density of 96 TPI or 48 TPI is written into a discrimination area of a disk. When the disk is set into the FDD and is used, a CPU reads out track density data from the disk and produces a flag byte data, including the track density data, and stores it into a main memory. When SEEK COMMAND is executed, a track density of the disk is checked to see if it is 96 TPI or 48 TPI on the basis of the flag byte data. If it is determined that the disk of 48 TPI is set into the FDD for use in driving a disk of 96 TPI according to this discrimination, an FDC outputs a STEP signal for allowing the traveling distance of the head to be doubled as compared to an ordinary distance, thereby controlling the seeking operation by the FDD so as to assuredly move the head to a predetermined desired track.