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Chapter 8: Control Unit (Function Control Unit (Coordinate the Sequence…
Chapter 8: Control Unit
Basic Elements of CPU
ALU
Registers
Internal dat path
External Data Path
Function Control Unit
Coordinate the
Sequence data
Interpret
Instruction
Control data flow
Receive external
instructions
Control execution
units
Handle multipleTask
Fetch,decode,execution,store
Hardwired CU
Technology is circuit based
Fixed instruction format
ROM is not used
Microprogrammed CU
Technology is software based
Instruction not
Register based
ROM is used