|Computer Architecture is concerned with the way hardware components are connected together to form a computer system.
||Computer Organization is concerned with the structure and behaviour of a computer system as seen by the user.
|It acts as the interface between hardware and software.
||It deals with the components of a connection in a system.
|Computer Architecture helps us to understand the functionalities of a system.
||Computer Organization tells us how exactly all the units in the system are arranged and interconnected.
|A programmer can view architecture in terms of instructions, addressing modes and registers.
||Whereas Organization expresses the realization of architecture.
|While designing a computer system architecture is considered first.
||An organization is done on the basis of architecture.
|Computer Architecture deals with high-level design issues.
||Computer Organization deals with low-level design issues.
|Architecture involves Logic (Instruction sets, Addressing modes, Data types, Cache optimization)
||Organization involves Physical Components (Circuit design, Adders, Signals, Peripherals)