Ñòóäåíòàì > Ðåôåðàòû > Îïèñàíèå ðàáîòû ýëåêòðè÷åñêîé ñõåìû îõðàííîãî óñòðîéñòâà
Îïèñàíèå ðàáîòû ýëåêòðè÷åñêîé ñõåìû îõðàííîãî óñòðîéñòâàÑòðàíèöà: 4/6
3 16
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15
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5 1008ÂÆ10 14
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6 13
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7
12
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8 11
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9
10
Ðèñ. 4.4. Öîêîë¸âêà êîðïóñà 1008ÂÆ10 (ïëàñòìàññîâûé êîðïóñ òèïà
2104.18-10).
Íàçíà÷åíèå âûâîäîâ ìèêðîñõåìû :
1 - Ucc - íàïðÿæåíèå ïèòàíèÿ ;
2  - Uref
- âõîä ñõåìû îãðàíè÷åíèÿ ;
3 - COL1
4 - COL2
- êëàâèàòóðíûå âõîäû (ñòîëáöû);
5 - COL3
6 - GND - çåìëÿ ;
7 - RD
8 - C - âûâîäû äëÿ ïîäêëþ÷åíèÿ RC-öåïè ãåíåðàòîðà;
9 - RC
10 - PPS - âûáîð ÷àñòîòû èìïóëüñîâ êîäîâîé
ïîñûëêè;
11 - M/B - âûáîð îòíîøåíèÿ èìïóëüñ/ïàóçà;
12  - MUTE
- âûõîä ðàçãîâîðíîãî êëþ÷à;
13  - ROW4
14 - ROW3 - êëàâèàòóðíûå âõîäû
(ñòðîêè);
15 - ROW2
16  - ROW1
17 - HS - âõîä îò
«ðû÷àæíîãî ïåðåêëþ÷àòåëÿ» (ïîëîæåíèå òðóáêè);
18 - DP - âûõîä
èìïóëüñíîãî êëþ÷à.
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Âõîäíàÿ
ëîãèêà
êëàâèàòó ðû
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Ðèñ. 4.5. Ñòðóêòóðíàÿ ñõåìà 1008ÂÆ10 :
Áëîê
ôîðìèðîâàíèÿ âûõîäíûõ ñèãíàëîâ
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13
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14 12
15
16 18
3
4 18
5
17
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11 2
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