• Delivering Control Unit (DC) is designed to provide
the service of delivering PDs from one unit to the
other. The destination address is UN0 in the field
”UN/OPseq” of PDs.
• Program Storage Management Unit (PM) is designed
to provide the services related to the program storage,
such as fetching an instruction from the program storage,
loading instructions into the storage, etc.
• Instruction Decode Unit (ID) is designed to provide the
service of instruction decoding.
• Register File Management Unit (RM) is designed to
provide the services related to the register file, such as
reading one or more operands from the register file, or
write a result into the register file.
• Data Storage Management Unit (DM) is designed to
provide the services related to the data storage, such
as reading a operand from the data storage, writing a
result into the storage, etc.
• Arithmetic/Logical Operation Unit (AL) is designed
to provide the services related to the arithmetic/logical
operations, such as +,-,*, etc.
• Peripheral Interface Control Unit (PI) is designed to
provide the service related to the management of peripheral
equipments and/or its interfaces.
• Execution Control Unit (EC) is designed to provide the
services related to the execution management like creating
a new PD, deleting a PD, modifying the PC field
of a PD, etc.