4553 CMOS 3位数BCD计数器内容摘要：
00660067CD A at of is CD or at a TL onis in as a ( 0.5 DC 0.5 DC 10 DC 20 500 65 150 8260 to P ” 7.0 0095C 5o 125L” 12 0095C 00o 125 0 0 1 X 0 0 X X X X 1 X 0 0X = t 19951/94to or be to to be be to be 20 55 25C 485164 55525 0” ” 0 0” O= 4.5 (9.0 (13.5 ” O= 0.5 (1.0 (1.5 ( ( ( ( 0) R = 150300600(50 pF on (A/f + (A/f + (A/f + is to be is as an of Cs *5To at 0 T(= 0 + (50) A ( V = (in f in is k =。阅读剩余 0%
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