Abstract: A watch band having length adjusting function is disclosed. The band is formed by connecting a plurality of link units (14). Each of the link units comprises a first link (10) and a second link (11). The first and second links (10, 11) have bodies (10b, 11b) and projections (10c, 11c) projecting from inner portions of the bodies. The bodies have holes (10a, 11a) extending in the lateral direction, and the projections have perforated holes (15) extending in the lateral direction. Adjacent link units are connected by engaging a pin with the holes. Structure (12a, 13) is provided for preventing the first and second links from moving in the lateral direction in an approximately flat state, and for allowing the lateral movement of the links when both the links are relatively angularly displaced about the pin.

Abstract: A method of composing a set of instructions for directly executing a data-flow type program by using a Petri net diagram direction to structured data of at least one of, or a combination of, Cartesian product, direct union and sequence, and a structured data driven type processor system for executing a program containing such instructions. In composing a set of instructions, desired data paths, i.e., links, are provided in accordance with the Petri net diagram, and the links are defined by a data type which defines the data to be processed. A work node connected to the link at the input side of the work node is defined which work node takes data from the link at the input side of the work node, performs a desired calculation to take the calculation result out to the link at the output side of the work node. A data type defining data on the link at the output side is restricted by a calculation function of the work node.