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♦ ;
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. 2.41 , , - (arithmetic logic unit - ALU).
(operation code register - OSR) ( ), . OSR. .
(temporary address register
TAR) , . .
(temporary address register - TDR) , ,
ALU.
- , .
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(instruction pointer I, ) , . ,
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:
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2. .
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.
2.
.
3.
OSR.
4. 1 1.
5. IP
.
6.
.
7.
TDR.
8.
TDR
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9.
.
10. I I.
. 1 4 , 5 10 .
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. .
, (RAM/ ROM), . .
Intel 8051. 1980 , . 87528, EPROM 32 , 512 , 16- . 4 - .
, ROM. . . 2.42
- 051.