The late 1980s to early 1990s period saw a decisive shift toward clockless, hazard-free circuit design, with emphasis on deterministic synthesis methods that convert high-level specifications into robust asynchronous interconnections without a global clock. The focus on eliminating a central timing reference and on systematic timing constraints fostered design automation and enabled broader exploration of architectures that interface smoothly with synchronous components. Historical Significance: These early milestones established core methodologies for hazard mitigation, deterministic timing behavior, and automated synthesis, laying the groundwork for later asynchronous design tools and for neuromorphic-inspired approaches.