Compact Disc - It can tiny amount of data and it is an Optical storage device, Hard Disk - It can hold up to 500GB and it is a Magnetic storage device, Digital Video Disc - It can hold double or triple the size of a CD and it is an Optical storage device , Pen Drive - It can hold up to 1TB and it is a Flash storage device, Floppy Disk - It can hold up to 2.8MB and it is a Magnetic storage device, Blu Ray Disc - It can hold up to 50GB and it is an Optical storage device, Memory Card SD - It can hold up to 32GB and it is a Flash Memory,

Secondary Memory

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