Cadence Design Systems
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Cadence is a EDA software company and built at 1988. In EDA field, she is No.1 now. Its' products include in all parts from system design, logic synthesis to layout in IC design. Except those, she has other products, including encapsulation, PCB design, etc.
In EDA field, there are other company, for example: Synopsys, Inc. Mentor Graphics Corp