Vonn Neumann architecture

. understanding the componements of the CPU and the Vonn Neumann architecture

Central Processing Unit (CPU)

the “brain” of the computer and responsible for executing instructions

Control Unit (CU)

Manages the operations of the CPU and acts as the “boss” for the other componements

Instruction Register (IR)

Keeps a copy of the current instruction being executed

Program Counter (PC)

Responsible for holding the address of the current instruction and increments each cycle

Arithmetic Logical Unit (ALU)

Responsible for carrying out arithmetic and logical operations. Uses the accumulator to temporarily store result

Accumulator

Special-purpose register that temporarily stores the result of an operation performed by the ALU

Data Bus

Transfers data and instructions between the CPU and Main Memory

Address Bus

Transfers the memory address from the CPU to Main Memory

Control Bus

Transfers control signals which coordinate the operations for different hardware componements

Main Memory (RAM)

Temporarily stores data and instructions for the CPU and is volatile

Vonn Neumann Architecture

A type of stored program concept where data and instructions are both stored in main memory. However data and instructions cannot be fetched at the same time due to sharing the same bus