The CompTIA A+ series prepares learners for the CompTIA A+ certification exams: Core Hardware and OS Technologies. Topics covered in this series include microprocessors, displays, storage media and devices, printers, modems, buses, operating systems, and more. Gaining CompTIA A+ certification assures employers and computer owners that a PC repair technician has the requisite knowledge to build, upgrade, troubleshoot, and repair personal computer (PC) systems.