FX1S Datasheet, PDF (61/480 Pages) Mitsubishi Electric Semiconductor – FX1S

ÎÏÅÐÀÍÄÛ
ÐÅÃÈÑÒÐÛ
3.8.8
ÏÐÅÄÑÒÀÂËÅÍÈÅ ×ÈÑÅË
ÏÊ ñåìåéñòâà FX äàþò âîçìîæíîñòü ðàáîòàòü ñî çíà÷åíèÿìè ÷èñåë â ñëåäóþùèõ
ïðåäñòàâëåíèÿõ:
b äåñÿòè÷íûå ÷èñëà
b ×èñëà â íàó÷íîì ôîðìàòå
b ×èñëà ñ ïëàâàþùåé çàïÿòîé
b Äâîè÷íûå ÷èñëà
b Øåñòíàäöàòåðè÷íûå ÷èñëà
b Ôîðìàò BCD (÷èñëà â äâîè÷íî-äåñÿòè÷íîì êîäå)
b Áèòîâûé ïðèìåð
ÂÍÓÒÐÅÍÍÅÅ ÏÐÅÄÑÒÀÂËÅÍÈÅ ×ÈÑÅË Â ÏÊ
Ìèêðîïðîöåññîð (öåíòðàëüíûé ïðîöåññîð) ÏÊ â îñíîâíîì îáðàáàòûâàåò òîëüêî äâîè÷íóþ
èíôîðìàöèþ. Ñàìûé ìàëûé ýëåìåíò äâîè÷íîé èíôîðìàöèè íàçûâàåòñÿ áèòîì. Áèò ìîæåò
ïðåäñòàâëÿòüñÿ äâóìÿ ñîñòîÿíèÿìè ñèãíàëà “0" è ”1".
Âñå ÷èñëîâûå çíà÷åíèÿ, êîòîðûõ íåò â äâîè÷íîì ôîðìàòå, ïðåîáðàçîâûâàþòñÿ ïîýòîìó â ÏÊ
â äâîè÷íûé ôîðìàò (êîäèðóþòñÿ).
ÓÊÀÇÀÍÈÅ
ÏÊ âíóòðè ïðåäñòàâëÿåò âñå ÷èñëà êàê 16-òè èëè 32-õ ðàçðÿäíûå äâîè÷íûå ÷èñëà èëè êàê
áèòîâûé ïðèìåð (16-òè è 32-õ áèòîâûå ôîðìàòû).
 ñëåäóþùèõ ðàçäåëàõ áóäóò ðàññìîòðåíû ðàçëè÷íûå ñèñòåìû ÷èñåë è ïðåîáðàçîâàíèÿ
çíà÷åíèé ÷èñåë (êîäèðîâàíèå) ìåæäó ýòèìè ÷èñëîâûìè ñèñòåìàìè.
ÄÅÑßÒÈ×ÍÀß ÑÈÑÒÅÌÀ ×ÈÑÅË
Áàçà: 10
Öèôðû: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
Îáëàñòü çíà÷åíèé:
– 16-òè áèòíûé ôîðìàò: -32 768 ... +32 767
– 32-õ áèòíûé ôîðìàò: -2 147 483 648 ... [phone]
ÏÐÈÌÅÐ
351 (äåñÿòè÷íîå) = 3 x 102 + 5 x 101 + 1 x 100
Ħ
Ïðîãðàììèðîâàíèå FX1S/FX1N/FX2N/FX2NC
3 – 31