数字电子电路复习练习题1.pdf
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中央电大 沈雅芬
1 ( 12) RS Q n+ 1 = ,
( 1) P
, ( 13) D ,
( 2) , i C iB D , n
i C = , I CEO I CBO ,
I CEO = ( 14) ,
( 3) N R DS D
, ( 15) J , J = K ,
( 4) , ; K = J ,
, ,
( 16) J T , J
( 5) ( 2 = ( ) 8 = ( ) 10 = J = K =
( ) 16 ( 17) ,
( 6) ,
( 18) ,
( 7) CMOS , f 0
( 8) T TL N , ( 19) f 0, 555
| I IS | = 1. 4mA, I IH = 20A, I OL = 14mA, | I OH | = 400A, , R C
N = ( 20) ROM
( 9) 1 CMOS Y : Y 1 =
, Y2 = ( 21) 2 048! 4RAM, ,
,
( 22) RAM ,
RAM
( 1)
( 2) iB ( 1+ ) i CBO
( 3) UDS i D
( a) (b) UGS
1 CMOS
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