Cooking apparatus having an enclosed cooking chamber with a radiant heater suspended in the upper portion thereof provides radiant and forced air convection heating to cook food products. Semiconductor integrated circuit may include a power on clear circuit, a low voltage detecting circuit, a RAM data destruction preventing block, a RAM portion, and a combination circuit. Furthermore, because a conventional AC adaptor can be used, the waterproofing member excels in general versatility. The current page is combined with the identified page components of the layout page to form a combined page. This increases reliability in data transmission and reception, and enables the system to function stably in the presence of a dead point. The raw DSU mapping provides access to the raw DSU with many of the advantages of using a file system, including name persistency, permissions, persistent attributes, locking information for a distributed file system and other extended metadata.