# Overview

## Get BMNNSDK

## Defined Terms

| **Terms** | **Description**                                                   |
| --------- | ----------------------------------------------------------------- |
| BM1880    | BitMain’s Device AI chip                                          |
| BMNNSDK   | BitMain’s proprietary deep learning SDK based on BM AI chip       |
| USB Mode  | one type of programming model                                     |
| SoC Mode  | one type of programming model                                     |
| CModel    | one type of programming model                                     |
| BMRuntime | Is the TPU runtime system for neural network computing.           |
| BMKernel  | formatting users’ computation requests into hardware instructions |
| BMNet     | to quantify and compile the trained network.                      |
| BModel    | a deep neural network model format for BITMAIN TPU processors     |

## License and Version

### Copyright Policay

BMNNSDK is BitMain’s original deep learning development kit.No part of this publication may be reproduced or transmitted in any form or by any means without the prior written permission of BitMain.

### Version

The latest version is v1.0

## Support

You can visit our forum (<https://developer.sophon.ai/forum/index.html>)to submit your issue or please send email to <bmai@bitmain.com>, if you have any issues or feedback related to BMNNSDK.