The other types of storage units all require that the computer be equipped to read data from those types of media. A floppy disk drive can be built into the computer or can be connected externally. All storage devices are evaluated by how much data they can hold. The most important part of the computer is simultaneously the one which usually requires the least maintenance or interference with. Memory and Speed Computers also depend on two other types of components which are essential to memory and speed.
Memory refers to the computers capacity for storing information while that information is processed.
The instructions provided by ROM usually contain simple programs that tell the computer where to find and load the computers operating system, and other basic information. Users do not usually need to know much about ROM or the information contained therein. The information contained on the ROM chips is not usually upgraded or altered. RAM is much more important from the users perspective. RAM or random-access memory is the computers active memory.