Hard drive + Optical drive
Read to learn
the hard drive is one of the most important part of the computer as it sores all the data. without the hard drive there would be almost no point of saving because you would not be able to.this is either external or internal end realist data slowly. the advantage is to read and write data at the same time. the optical drive can only read data.
this can read disks but cannot add in new information to the disk. This can be used as a DVD.
some examples of how they look
Why are they important
Without thees the computer will have low storage and you would not be able to axes many things as without them you would not have computer games and to watch movies on a computer without using a pen drive.