Raharjo, Panca Mudji, Mochammad Rif’an, and Nanang Sulistyanto. 2012. “The Implementation of Feedforward Backpropagation Algorithm for Digit Handwritten Recognition in a Xilinx Spartan-3”. Jurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems) 4 (2):pp. 17-21. https://doi.org/10.21776/jeeccis.v4i2.106.