Electronic Design Automation, usually shortened to EDA, is the body of software that engineers use to design integrated circuits. A modern chip can hold billions of transistors, far beyond what any person could place by hand, so the design is carried out by programs that handle simulation, logic synthesis, physical placement and routing, timing analysis, and verification. EDA is to chip design what compilers and toolchains are to software: the indispensable layer of automation between human intent and a working artifact.
The intellectual groundwork for EDA was laid by the structured design methodology of the Mead-Conway era. By reducing chip layout to clean abstractions and simplified, scalable design rules, the 1980 textbook “Introduction to VLSI Systems” made it possible to describe a chip at a higher level and let tools handle the detailed translation into geometry. Automated design-rule checking, layout generation, and circuit extraction grew naturally out of treating chip design as a disciplined, rule-governed process rather than a hand craft.
A central pillar of modern EDA is the hardware description language, which lets a designer specify what a circuit should do in text, much like writing a program, and then have tools synthesize that description into gates and transistors. Verilog is one such language, standardized by the IEEE as IEEE Standard 1364. The IEEE describes it as a formal notation intended for use in all phases of the creation of electronic systems, both machine readable and human readable, supporting the development, verification, synthesis, and testing of hardware designs.
The EDA industry consolidated around a few large companies, notably Cadence, Synopsys, and Mentor Graphics, whose tool suites cover the flow from high-level description down to the masks sent to a foundry. Logic synthesis in particular, popularized commercially in the late 1980s, let designers work at the register-transfer level and let software derive the gate-level implementation, raising the level of abstraction much as high-level languages did for programming.
Without EDA, the modern semiconductor industry would not exist at its current scale. The separation of design from fabrication that the Mead-Conway revolution introduced depends on EDA tools to produce a clean, verified design that a foundry can manufacture, which is why these tools sit at the heart of both the fabless design houses and the foundries that serve them.