The memory unit of a computer is where information is stored. It is similat to a filing cabiner where borh information for solving a problem and instructions on how to use the information are stored. Computer systems concain internal memory units for the storage of instructionsand data; in addition, they may include excernal systems to increase the memory capaciry and provide flexibility. Without this storage, the compucer would have no heart.

a$.$ The heart of the computer is the memory unit.

b$.$ There are incernal and external memory units.

c$.$ The memory unit of a computer is like a filing cabinet.