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An apparatus for containing objects, such as electronic circuit cards, and a method for making the same, the apparatus having a housing; at least one case disposed within the housing, the case adapted to confine the objects to different locations within the housing and comprising a frame, the region

An apparatus for containing objects, such as electronic circuit cards, and a method for making the same, the apparatus having a housing; at least one case disposed within the housing, the case adapted to confine the objects to different locations within the housing and comprising a frame, the region within the frame divided into two regions by a first partition, each of the two regions divided into a plurality of sections by a plurality of second partitions, each of the second partitions thermally coupled to the frame and the first partition, each of the sections divided into a plurality of slots, each slot having an object disposed therein for thermal contact between the first partition, a second partition, and one of a second partition and the frame; and at least one heat sink adapted to absorb heat from the case, the heat sink thermally coupled to the case and the housing.

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An apparatus for containing objects, such as electronic circuit cards, and a method for making the same, the apparatus having a housing; at least one case disposed within the housing, the case adapted to confine the objects to different locations within the housing and comprising a frame, the region

An apparatus for containing objects, such as electronic circuit cards, and a method for making the same, the apparatus having a housing; at least one case disposed within the housing, the case adapted to confine the objects to different locations within the housing and comprising a frame, the region within the frame divided into two regions by a first partition, each of the two regions divided into a plurality of sections by a plurality of second partitions, each of the second partitions thermally coupled to the frame and the first partition, each of the sections divided into a plurality of slots, each slot having an object disposed therein for thermal contact between the first partition, a second partition, and one of a second partition and the frame; and at least one heat sink adapted to absorb heat from the case, the heat sink thermally coupled to the case and the housing. controls the blowing direction of said fan as determined by said bay identifying circuit. 2. The computer claimed in claim 1: wherein said first bay is nearer said ventilation opening than said second file bay; and wherein said bay identifying circuit compares said operation assuring temperatures of said first and second file units, and said bay identifying circuit determines said blowing direction as blowing from said ventilation opening to said second file bay through said first file bay, if said operation assuring temperature of said first file unit is lower than that of said second file unit. 3. The computer claimed in claim 2, wherein said bay identifying circuit determines said blowing direction as blowing from said second file bay to said ventilation opening through said first file bay, if said operation assuring temperature of said first file unit is higher than that of said second file unit. 4. The computer claimed in claim 1, wherein said computer stores an identification relationship table that indicates relationships between said first and second identifications and said operation assuring temperatures, respectively, and wherein said bay identifying circuit refers to said table to determine said operation assuring temperatures. 5. The computer claimed in claim 1, wherein said first and second identifications each include a respective one of said operation assuring temperatures. 6. The computer claimed in claim 1 further comprising: a temperature sensor that detects an ambient temperature of said first and second file bays, wherein said fan control circuit controls rotation speed of said fan based on said ambient temperature. 7. The computer claimed in claim 6, wherein when said ambient temperature is close or equal to a lower one of the operation assuring temperatures, said fan control circuit turns said fan ON. 8. A computer comprising: a ventilation opening in a wall of said computer; a first file bay which contains a first file unit having a first identification; a second file bay which contains a second file unit having a second identification and that is arranged near said first file bay; a fan which dissipates heat of said first and second file units and is arranged close to said ventilation opening; a bay identifying circuit which recognizes operation assuring temperatures of said first and second file units by referring to said first and second identifications and that determines a blowing direction of said fan based on the operation assuring temperatures; and a fan control circuit which controls the blowing direction of said fan determined by said bay identifying circuit; wherein said first file bay is sandwiched between said ventilation opening and said second file bay. 9. The computer claimed in claim 8, wherein said bay identifying circuit compares said operation assuring temperatures of said first and second file units, and said bay identifying circuit determines said blowing direction as blowing from said ventilation opening to said second file bay through said first file bay, if said operation assuring temperature of said first file unit is lower than that of said second file unit. 10. The computer claimed in claim 9, wherein said bay identifying circuit determines said blowing direction as blowing from said second file bay to said ventilation opening through said first file bay, if said operation assuring temperature of said first file unit is higher than that of said second file unit. 11. The computer claimed in claim 8, wherein said computer stores an identification relationship table that indicates relationships between said first and second identifications and said operation assuring temperatures, respectively, and wherein said bay identifying circuit refers to said table to determine said operation assuring temperatures. 12. The computer claimed in claim 8, wherein said first and second identifications each include a respective one of said operation assuring tempe ratures. 13. The computer claimed in claim 8 further comprising: a temperature sensor that detects an ambient temperature of said first and second file bays, wherein said fan control circuit controls rotation speed of said fan based on said ambient temperature. 14. The computer claimed in claim 13, wherein when said ambient temperature is close or equal to a lower one of the operation assuring temperatures, said fan control circuit turns said fan ON. 15. A computer comprising: a first ventilation opening in a first side wall of said computer; a second ventilation opening in a second side wall of said computer opposite said first side wall; a first file bay which contains a first file unit having a first identification; a second file bay which contains a second file unit having a second identification and that is arranged near said first file bay; a fan which dissipates heat of said first and second file units and is arranged close to said first ventilation opening; a bay identifying circuit which recognizes operation assuring temperatures of said first and second file units by referring to said first and second identifications and that determines a blowing direction of said fan based on the operation assuring temperatures; and a fan control circuit which controls the blowing direction of said fan determined by said bay identifying circuit; wherein said first and second file bays are sandwiched between said first and second ventilation openings. 16. The computer claimed in claim 15, wherein said bay identifying circuit compares said operation assuring temperatures of said first and second file units, and said bay identifying circuit determines said blowing direction as blowing from said first ventilation opening to said second ventilation opening through said first file bay and said second file bay, if said operation assuring temperature of said first file unit is lower than that of said second file unit. 17. The computer claimed in claim 16, wherein said bay identifying circuit determines said blowing direction as blowing from said second ventilation opening to said first ventilation-opening through said second file bay and first file bay, if said operation assuring temperature of said first file unit is higher than that of said second file unit. 18. The computer claimed in claim 15, wherein said computer stores an identification relationship table that indicates relationships between said first and second identifications and said operation assuring temperatures, respectively, and wherein said bay identifying circuit refers to said table to determine said operation assuring temperatures. 19. The computer claimed in claim 15, wherein said first and second identifications each include a respective one of said operation assuring temperatures. 20. The computer claimed in claim 15 further comprising: a temperature sensor that detects an ambient temperature of said first and second file bays, wherein said fan control circuit controls rotation speed of said fan based on said ambient temperature. istor, Shingaku Gihou, vol. 9, pp. 23-27 ED-75-35, 75-62 (1975) (with translation). B. Wartgotz and W.M. Alvino, Polymer Engineering and Science--Conductive Polyethylene Resins from Ethylene Copolymers and Conductive Carbon Black, pp. 63-70 (Jan. 1967). Kazuyuki Ohe and Yoshihide Naito, Japanese Journal of Applied Physics--A New Resistor Having an Anomalously Large Positive Temperature Coefficient, vol. 10, No. 1, pp. 99-108 (Jan., 1971). Ichiro Tsubata and Naomitsu Takashina, 10thRegional Conference on Carbon--Thermistor with Positive Temperature Coefficient Based on Graft Carbon, pp. 235-236 (1971). J. Meyer, Polymer Engineering and Science--Glass Transition Temperature as a Guide to Selection of Polymers Suitable for PTC Materials, vol. 13, No. 6, pp. 462-468 (Nov., 1973). J. Meyer, Polymer Engineering and Science--Stability of Polymer Composites as Positive--Temperature--Coefficient Resistors, vol. 14, No. 10, pp. 706-716 (Oct., 1974). Yoshio Sorimachi and Ichiro Tsubata, Shengakeekai Parts Material--Characteristics of PTC--Thermistor Based on Carbon Black Graft Polymer, vol. 9, Paper, No. UDC 621.316.825.2: [678.744.32-13:661.666.4] (1974).