Question

why do files and programs of secondary storage needed to be transferred to the memory unit ?​

Answer 1

Secondary storage is needed to keep programs and data long term. Secondary storage is non-volatile , long-term storage. Without secondary storage all programs and data would be lost the moment the computer is switched off. ... solid state storage devices, such as USB memory sticks.

Answer 2

Secondary storage is needed to keep programs and data long term. Without secondary storage all programs and data would be lost the moment the computer is switched off. There are three main types of secondary storage in a computer system: solid state storage devices, such as USB memory sticks.