Buabthong, Narong, Somchart Chokchaitam, Surachai Hirinitichai, and Kanok Musickmas. “A Designed DES Chip with CPLD Technology”. Science & Technology Asia 2, no. 2 (November 6, 2015): 61–74. accessed April 22, 2026. https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/42006.