Area Optimization Using DC Cover Based Approximate Computing Technique

Considering that the introduction of the DC product terms tends to minimize the logic function which helps for circuit area saving. This paper proposes the DC cover based approximate computing technique for logic function minimization and circuit area saving. The proposed area optimization algorithm mainly includes the DC cover search methods, error rate calculation, and error rate control. The optimization algorithm is implemented in C language and tested using the MCNC (Microelectronics Center of North Carolina) Benchmarks. Experimental results show that compared with those accurate solutions, the proposed algorithm has the average circuit area is reduced by 73.89% with an average error rate of 4.38%.