PPSC Past Paper Labour Officer Labour and Human Resource Department 2018 Solved MCQs, Computer MCQs, PPSC Solved Past Papers MCQsOptical device was used in which of the following computers for the first time. Our personal computer belongs to?A. 1st generation computers B. 3rd generation computers C. Microcomputer generation D. None of these Brojan das was the first Asain?The Cave Squeaker an endangered species of frog found in which country?