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- Instruction_unit abstract "The instruction unit (IU) in a central processing unit (CPU) is responsible for organising program instructions to be fetched from memory, and executed, in an appropriate order. It is a part of the control unit, which in turn is part of the CPU.In the simplest style of computer architecture, the instruction cycle is very rigid, and runs exactly as specified by the programmer.In the Instruction Fetch part of the cycle,the contents of the program counter (PC) register are placed on the address bus, and sent to the memory unit;the memory unit returns the instruction at that address, and it is latched into the Instruction Register (IR);and the contents of the PC are incremented or over-written by a new value (in the case of a Jump or Branch instruction) ready for the next instruction cycle.This becomes a lot more complicated, though, once performance-enhancing features are added, such as instruction pipelining, out-of-order execution, and even just the introduction of a simple instruction cache.".
- Instruction_unit wikiPageID "5915421".
- Instruction_unit wikiPageRevisionID "551845533".
- Instruction_unit hasPhotoCollection Instruction_unit.
- Instruction_unit subject Category:Central_processing_unit.
- Instruction_unit comment "The instruction unit (IU) in a central processing unit (CPU) is responsible for organising program instructions to be fetched from memory, and executed, in an appropriate order.".
- Instruction_unit label "Instruction unit".
- Instruction_unit sameAs m.0fdbq_.
- Instruction_unit sameAs Q6041767.
- Instruction_unit sameAs Q6041767.
- Instruction_unit wasDerivedFrom Instruction_unit?oldid=551845533.
- Instruction_unit isPrimaryTopicOf Instruction_unit.