Generally speaking, computer storage comes in two forms: solid-state memory and hard drives. Those can exist inside the computer, outside the computer (in external cases connected by a cable, or flash memory drives and cards), or as memory chips soldered directly to the computer’s main logic board. This chapter looks at the structural details of how they work, which we will build on for other topics.
We think of drive capacity first when it’s time to replace or upgrade storage. This comparison isn’t practically relevant now, but bear with me, because it’s fun to think about: The original Apple I and Apple II models included no storage, but you could connect a cassette player and store software on the same ...