Abstract: A retail terminal to register merchandise data such as a price of merchandise, amount of merchandise, a merchandise code and a merchandise name in a department store or a retail store is disclosed. The retail terminal includes a data buffer for temporarily storing the merchandise data of a plurality of items of merchandise item by item, the merchandise data stored item by item are summed upon the depression of a total key when the account for a customer has been completed and the sum is stored in a memory. Upon the depression of a correction key, the data temporarily stored in the data buffer are sequentially and retrogressively cleared item by item. In this manner, the correction for the plurality of items of merchandise is simplified.

Abstract: An electrophoresis pattern reading system of fluorescent type is comprised of a detachable migration unit comprising a gel functioning as a base for electrophoresis and a gel-supporting body for supporting the gel; an electrophoresis unit, to which the migration unit is mounted, for performing electrophoresis by applying migrating voltage to the gel to which a sample labeled with a fluorescent substance is added; and a reading unit including an instrumentation subunit for reading an electrophoresis pattern, to which the migration unit is mounted after electrophoresis and which receives fluorescence emitted from the fluorescent substance of the sample on the gel upon application of light to the gel.