 KADUNA Ahmadu Bello University, Iya Abubakar Computer Centre, Main Campus, Samaru, Zaria, Kaduna State KADUNA Ahmadu Bello University, Multi-Purpose Hall, Main Campus, Samaru, Zaria, Kaduna State KADUNA Alekwe Nigeria Ltd, Sardauna Memorial College, Unguwan Dosa, Kaduna, Kaduna State KADUNA Amal Computers and Test Centre Nigeria Limited, 30 Matazu Road Opposite Ahmadiyya Jummaat Mosque Tudun -Wada. 