Check SSC CHSL Syllabus 2015 for LDC DEO 12th Level Exam – SSC LDC DEO Syllabus Staff Selection Commission conducts Combined Higher Secondary Level commonly known as CHSL for the posts of LDC (Lower Division Clerk) and DEO (Data Entry Operator). Every year, SSC conducts this exam as per their schedule for these posts vacant in Central govt. departments / ministries etc. Huge number of candidates apply for this exam and the competition is tough."SSC CHSL Syllabus 2015 for LDC DEO 10+2 Level Exam with Pattern"