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Computer Organisation, Primary memory, Processor (CPU), Input, Output,…
Computer Organisation
Computer Architecture
CPU
Control unit (CU)
the operation of the CPU.
Arithmetic logic unit (ALU)
performs all the basic arithmetic, logical or input/output
operations.
memory data register (MDR)
holds the data that is to be used by the ALU and then saved to the RAM
memory address register (MAR)
holds the memory address of the data to be used by the ALU
RAM and ROM
ROM
holds instructions and data in unique memory locations.
RAM
stores the executing program instructions as well as any data that is needed.
Primary memory
ROM
RAM
Processor (CPU)
CU
MDR
.
MAR
.
ALU
Input
Process
Storage
.
Output
Output
.
Input
.