1. Department of Electrical Engineering, Universitas Islam Negeri Sultan Syarif Kasim, Pekanbaru, Indonesia
2. Department of Automation and Telecommunications, Taraz Regional University named after M. Kh. Dulaty, Taraz, Kazakhstan
3. Faculty of Electronic and Computer Engineering, Universiti Teknikal Malaysia Malaka, Malaka, Malaysia
4. Department of Mathematic Educations, Faculty of Educations and Teachers Training, Universitas Islam Negeri Sultan Syarif Kasim, Pekanbaru, Indonesia