DIFFERENT LANGUAGE & CYCLES
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Machine Language
The binary medium of communication with a computer through a designed set
of instruction which is specific to each computer, known as machine language .
EX.- 0011 1100
Assembly Language
A medium of communication with a computer in which programs are written in
mnemonics . An assembly language is specific to a given computer .
EX.- STAX, MOV
Mnemonics
A combination of letters to suggest the operation of an instruction .
EX.- XRA A
Instruction Cycle
It is defined as the time required to complete the execution of an
instruction . The 8085 instruction cycle consists of one to six machine cycle
or one to six operations .
Machine Cycle
It is defined as the time required to complete one operation of accessing
memory , I/O or acknowledging an external request . This cycle may consists of
three to six T-states .
Execution Cycle
The time during which an elementary operation takes place .
T-state
It is defined as the time required to complete one operation performed in
one clock period . Each T-state is precisely equal to one clock period .
Op code-fetch
The process of transferring instruction code from memory location to
instruction queue register is called op code fetch .
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