Abstract: An oven includes a conveying part configured to convey a food material, a first region and a second region to perform a first baking process and a second baking process, respectively, on the conveyed food material, and an intermediate region between the first region and the second region. The oven further includes a movable first partition provided between the first region and the intermediate region and a movable second partition provided between the intermediate region and the second region. The intermediate region is added as a region to perform the first baking process to the first region in response to the first partition being opened and the second partition being closed. The intermediate region is added as a region to perform the second baking process to the second region in response to the first partition being closed and the second partition being opened.

Abstract: A logic circuit comprises a serially connected circuit structure and a wired OR connected circuit structure of unit circuits, each of which is composed of logic elements and equivalent to a relay contact. The respective unit circuit is connected with associated equipment in a manner similar to that used in connecting relay contacts, on a base of a circuit diagram, whereby a logic circuit equivalent to the relay contact circuit is formed.