Abstract Connected mobile applications, known as the Internet of Things (IoT), require deploying extensive efforts to optimize power consumption and to improve the system performance at the same time. One way to reach this goal is based on sacrificing the computing precision by adopting different approximate computing methodologies for boosting system performance and reducing the power consumption. In this work, Adjustable Precision Computing (APC) based on redundant and on-line arithmetic operators is introduced. It provides the possibility to adapt the computing precision at will, depending on the performance and/or power requirements of the application. The proposed approach supplies an efficient power and area optimized solution with higher performance and without compromising the computing precision. Indeed, the APC innovative architecture allows users to dynamically modify the system computation precision, as required. The adjudication of asynchronous control, instead of the traditional synchronous clocking, enhances even more the impact of the APC. The results of both synchronous and asynchronous implementation examples are presented, showing the efficiency of the APC approach.

中文翻译：

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时钟和事件驱动的冗余可调精度计算

摘要 被称为物联网 (IoT) 的互联移动应用需要付出大量努力来优化功耗并同时提高系统性能。实现这一目标的一种方法是基于牺牲计算精度，采用不同的近似计算方法来提高系统性能并降低功耗。在这项工作中，介绍了基于冗余和在线算术运算符的可调精度计算（APC）。它提供了根据应用程序的性能和/或功率要求随意调整计算精度的可能性。所提出的方法提供了具有更高性能且不影响计算精度的高效功率和面积优化解决方案。确实，APC 创新架构允许用户根据需要动态修改系统计算精度。异步控制的裁决，而不是传统的同步时钟，进一步增强了 APC 的影响。提供了同步和异步实现示例的结果，显示了 APC 方法的效率。