基于DNA计算的优先编码器逻辑分子实现

Logical realization of molecular encoder based on DNA computing

在传统计算机发展速度减缓的状态下,以生物分子为材料的生物计算机因其具有高度的并行性和海量存储能力,因而受到研究者的关注.文章基于DNA置换反应机理设计了一种与非逻辑门,并用通过级联与非门构建了一种4线-2线优先编码器逻辑电路的分子计算模型.仿真结果验证了设计的优先编码器具有效性和准确性.该逻辑电路的结构简单易实现,为后续复杂DNA级联电路的发展做出了有益的探索.

Under the contert of slackening traditional computer industry, biocomputers using biomolecules as materials have attracted the attention of researchers because of their high parallelism and massive storage capabilities. In this paper, we designed a NAND logic gate based on the DNA strand displacement mechanism, and a molecular calculation model, a 4-wire-2 wire priority encoder logic circuit is constructed by cascading the NAND gates. The simulation results verify the effectiveness and accuracy of the priority coding system designed in this paper. The unique point of this proposed circuit is that the structure of the logic circuit is simple and easy to implement, which renders an insightful attempt for the subsequent development of complex DNA cascade circuits.