Microprocessor Architecture

BTEC National Diploma IT Practitioners

Address Bus

Data Bus

Control Unit

ALU

Address Bus

Data Bus

MAR

MBR

Control Unit

ALU

Address Bus

Data Bus

SCR MAR

MBRCIR

Address Buffer

Control Unit

ALU

Address Bus

Data Bus

SCR MAR

MBRCIR

Address Buffer

Control Unit

ALU

Address Bus

Data Bus

SCR MAR

MBRCIR

INDEX X

INDEX Y

STACK POINTER

Accumulator

Address Buffer

Control Unit

ALU

Address Bus

Data Bus

SCR MAR

MBRCIR

INDEX X

INDEX Y

STACK POINTER

Accumulator

Address Buffer

Control Unit

ALU

Switchable Logic Unit

Address Bus

Data Bus

SCR MAR

MBRCIR

INDEX X

INDEX Y

STACK POINTER

Accumulator

Address Buffer

Control Unit

ALU

Switchable Logic Unit

Address Bus

Data Bus

SCR MAR

MBRCIR

INDEX X

INDEX Y

STACK POINTER

Accumulator

Address Buffer

Control Unit

ALU

Switchable Logic Unit

Address Bus

Data Bus

SCR MAR

MBRCIR

INDEX X

INDEX Y

STACK POINTER

Accumulator

Address Buffer

Control Unit

ALU

Address Bus

Data Bus

FLAGS

Switchable Logic Unit