The modularization of digital equipment should be based on a systematic method that can be readily understood by maintenance personnel.
Additional Information:
Modularization, dividing a unit of equipment into individual modules, is a design strategy for enhancing maintainability. The following lists modularization methods that were recommended for the commercial aviation industry, in order of preference: (1) logical flow packaging, (2) circuit packaging, and (3) component packaging. In logical flow packaging, circuits, parts, and components are packaged and arranged in correspondence with their functional relationships. In circuit packaging, all parts of a single circuit or logically related group of parts, and only that circuit or group, are placed in a separate module. In component packaging, similar parts or components are located together, for example, all the fuses or all the relays might be grouped together.