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# Introduction
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2019-06-26 06:54:19 +08:00
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The Zephyr OS is a small-footprint kernel designed for use on
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resource-constrained and embedded systems: from simple embedded
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environmental sensors and LED wearables to sophisticated embedded
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controllers, smart watches, and IoT wireless applications.
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See the [zephyrproject.org](https://zephyrproject.org) site for more
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information about the project and becoming a member, and this [summary
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of Zephyr resources](https://docs.zephyrproject.org/latest/introduction/index.html#resources)
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to help you find your way around the project.
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## Supported Boards
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The Zephyr kernel supports multiple architectures, including ARM
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Cortex-M, Intel x86, ARC, NIOS II, Tensilica Xtensa, and RISC-V 32. For
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details, see the [latest supported boards
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documentation](https://docs.zephyrproject.org/latest/boards/index.html).
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## Licensing
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Zephyr is permissively licensed using the Apache 2.0 license (as found
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in the [project's GitHub LICENSE
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file](https://github.com/zephyrproject-rtos/zephyr/blob/main/LICENSE).
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2019-06-26 06:54:19 +08:00
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There are some imported or reused components of the Zephyr project that
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use other licensing, as described in [Licensing of Zephyr Project
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components](https://docs.zephyrproject.org/latest/LICENSING.html#zephyr-licensing).
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