the another name for primary storage is main storage device.
It's a storage that is attached internally in the device's box.
Primary and Secondary storage.
RAM is a primary storage medium, but it is volatile. Cache memories storage frequently accessible data.
primary storage
Yes both are secondary storage devices. Primary storage devices include RAM & ROM. Secondary storage devices include magnetic disks like hard disks and cds(optical disks)
locking abilty
both are the storage devices both store the data in binary form both are the costlier
RAM CACHE REgisters of processors
They are both storage devices
In most cases same type of devices used for primary storage - hard drives.
Primary storage is usually the drive where the operating system is and the secondary storage is a additional drive for space. Usually, Windows names it's primary drive as C:\ and all it's following as other letters.