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Micro programmed
Micro programmed is techniques the control login necessary to
execute instruction with in a processor
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It generates the address used to step
through the micro program of a control store
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Micro instruction
Micro instruction are symbolically representation of ring pattern
Arithmetic and logical unit control
Arithmetic logical unit specified by the operation to be performed by
arithmetic logical unit
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Arithmetic logical unit destination- specifies the register to be
written from arithmetic logical unit result
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Personnel computer write control- specifies the update of personal
computer
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Pipelining
Pipelining is an effective way of organizing concurrent activity in a
computer system
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Hardware organization
Consider a computer having two separate hard ware units one for
fetching instruction and another for executing them
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this buffer is needed to executing instruction while the fetch unit is
fetching next instruction
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In one clock cycle- in the first clock cycle the fetch unit fetches unit
fetches the instruction and store it in the buffer at the end of the
clock cycle
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Fetch and execute operation can be done concurrently
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Control of instruction hazard
It is the condition in which the execution of an instruction may be
delayed due to an availability of an instruction
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Advantages of pipeline
Faster execution
Time saving
High through put were through put rate of instruction execution
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Micro
programmed output and memory there components are organized
around a common communication path called a bus
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Microcomputer is one component of microcomputer
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Micro programmer
A micro programmer is a clock driven semiconductor devices
consisting logical circuit manufactured using either a large scale
integration vary large scale integration
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The micro program can be divided into three segment
Arithmetic and logic unit
Registers array
Control unit
Arithmetic logical unit
Here various computing function performed include arithmetic
operation such as addition and logical operation such as AND or
exclusive or
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These registers
are used to store data temporally during the execution of a program
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