**What does SIP stand for?**
SIP stands for *Semiconductor Intellectual Property.*
**What is a semiconductor intellectual property (SIP) core?**
An SIP core is *a reusable unit of logic, cell, or integrated circuit layout design that's the intellectual property of one party.*
**What are the two other terms for a semiconductor intellectual property (SIP) core?**
The two other terms for an SIP core are:
1. IP core.
2. IP block.
**What can be done with semiconductor intellectual property (SIP) cores?**
Semiconductor intellectual property (SIP) cores can be *licensed to another party or owned and used by a single party.*
**The designers of what types of logic circuits use semiconductor intellectual property (SIP) cores as building blocks?**
Semiconductor intellectual property (SIP) cores as building blocks can be used by the designers of:
* System on Chip (SoC).
* Application-Specific Integrated Circuits (ASICs).
* Field-Programmable Gate Arrays (FPGAs).
# History
**What came into common practice in chip design in the 1990s?**
The practice that became common in chip design the 1990s was *the licensing and use of intellectual property (IP) cores.*
# Types of IP cores
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