A storage system comprises a cache for caching data blocks and storage devices for storing blocks. The method includes: obtaining the picture resources required by the JAVA virtual machine, decoding the picture resources into original data and then storing the original data; and reading the original data of the picture that requires loading to load the picture after receiving a loading picture event in normal operation of the JAVA virtual machine. Upon addressing a tag entry and the corresponding data entry, the tag information is output from the tag RAM and is compared with input address information. The support layer is preferably made of polypropylene or polyimide. The printed circuit board has an area larger than the cross sectional area of the housing.