ABSTRACT
The programme space stores the instructions of the programme in execution, the operating system, compiler, and other system software. Any information needed from the computer must come from the information stored in the memory and the system uses the output devices to provide the external world with the needed information. Any memory with random read cycle, it is also random for write cycle. It is generally called random access memory. Modern computers use what is known as “burst mode” access to improve the memory performance. In sequential access memories data is arranged in the form of units, called records, each with its unique address. The sequential access memory has one read/write mechanism; in case of hard disk this mechanism is called head assembly. Access is accomplished by direct access to reach general vicinity plus sequential searching, counting, or waiting to reach the final location. The chapter discusses the interfacing of the different components that form the semiconductor memory subsystems.
