Very Large-Scale Integration (VLSI) technology has been crucial to the rapid advancement of contemporary electronics because it has made it possible for small, fast, and energy-efficient systems to be employed in artificial intelligence, biomedical devices, communication, and computation. Innovation in devices from the micrometer scale to the present nanoscale and new atomic-scale technologies has been fueled by ongoing improvements in materials, fabrication techniques, system architectures, and design methodology. This paper offers a thorough summary of recent developments in VLSI design and technology, with particular attention on heterogeneous chiplet-based technologies, low-power architecture, high-performance computing systems, hardware that is neuromorphic and AI-oriented, and 3D integrated circuits. A thorough discussion is held regarding the main issues of manufacturing complexity, power management, thermal reliability, and scaling. Future themes are highlighted in the assessment, including spintronics, quantum computing, AI-driven design automation, 3D/2.5D integration, beyond-CMOS devices, and sustainable semi-conductor technologies.
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