Modular design is a design approach that subdivides a system into smaller parts called modulesA component or module is a discrete portion of a tool that has a particular function. Components can be assembled in dif... More that can be independently created and then used in different systems. A modular system can be characterized by functional partitioning into discrete scalable, reusable modules; rigorous use of well-defined modular interfaces; and making use of industry standards for interfaces.