Computer Applications

Secondary memory

In this Class 9 Computer Applications topic from Basics of Information Technology, students learn how secondary memory stores data and programs for long-term use. The topic explains its difference from primary memory, with reference to features such as non-volatile storage, larger capacity, and slower access. Students become familiar with common devices including hard disk drives, solid-state drives, optical discs, and USB flash drives, along with their everyday uses for saving, transferring, and backing up files.