In addition to the speed of the relationship, the hierarchy also states relationships - relationships
Other, namely:
Relationships Price: The price is down is more affordable. (Prices calculated
based dollars per bit of data stored).
• • •
Relationship Capacity: The above is generally more limited in capacity.
Usage frequency relationship: The higher the frequency up access.

2Setiap processor execution time, processor must read the instructions from main memory.
Agara instructions can be done quickly so must seek instructions available in memory
the hierarchy of higher-speed access. This execution speed will improve performance
system. For that there are two levels of memory concept, which had been temporarily accommodated in the memory
the higher hierarchy.
2.1 Register Memory
Which is a type of memory access speed of the fastest, this memory is the
CPU / Processor.
Example: Data Register, Register Address, Stack Pointer Register, Memory Addresss Register, I / O
Address register, Instruction register, etc..
2.2 Cache Memory
Limited-capacity memory, high speed is more expensive than main memory. Cache
This memory is between the main memory and processor registers, processor not working so
directly refers to the main memory so that performance can be improved.