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(8)F?? AC?? AB?? AC?? AC?? CD?? ACB?? CEF?? DEF
? ( AC?? ACB)?? AB?? AC?? AC?? (CD?? CEF?? DEF ) ? ( AC?? AC )?? AB?? ( AC?? AC )?? CD?? CEF ? (C?? CD)?? ( AB?? A)?? CEF ? (C?? CEF )?? A?? C?? EF?? A
(9)F?? AB?? ABC?? A( AB?? B)
? A(B?? BC )?? A(B?? A)?? A(B?? C )?? A(B?? A) ? A(B?? C )?? A?? A?? B?? C?? A ? 1?? 0
1-15 用卡诺图法将逻辑函数化简为最简与或表达式。 (1) F ( A, B, C, D)???? m (3,5,8,9,10,11)???? d (0,1, 2,15) (2) F ( A, B, C, D)???? m (2, 6,10,12,14)???? d (0, 4, 7,8) (3) F ( A, B, C, D)???? m (1, 2,8,10,11,12)???? d (0,3,,, 4 5 9) (4) F ( A, B, C, D)???? m (2,3, 4, 6,13)???? d (0, 7,9,12,14)
(5) F?? ABC?? ABD?? C D?? ABC?? AC D?? ACD
(6) F?? AC?? ABC?? AC D?? CD
(1) F?? B?? ACD
(2) F?? D
(3) F?? B?? C D
(4) F?? AC?? BD?? ACD
(5) F?? A?? D
(6) F?? A?? CD解:
AB
CD 00 01 11 10 00 × × 1 × 01 11 10 1
× 1
1 1
题1-15(2)
AB
CD 00 01 11 10 00 1 1 1
01 1 11 1 10 1 1 1
1 1 1 1
1-16 用卡诺图法将逻辑函数化简为最简或与表达式。 (1) F ( A, B, C, D)???? M (0, 2,5, 7,8,10,13,15)
(2) F ( A, B, C, D)???? M (0,1, 2, 7,8)??? d (10,11,12,13,14,15) (3) F ( A, B, C, D)???? M (12 4 10 12,,,, , 14) ?? ?6 7 8 9 13) d (5,,,,,
题1-15(5)
(1) F?? (B?? D)(B?? D)
(4) F?? ABC?? ABC?? ABC D ,约束条件: A?? B?? 0
(5) F (a, b, c, d )???? m (0, 2,3,5, 6,8,9) ,约束条件: ab?? ac?? 0 解:
(2) F?? (B?? D)( A?? B?? C )(B?? C?? D)
(3) F?? (C?? D)(B?? C )(C?? D)
(4) F?? ( A?? C )( A?? C?? D)
(5) F?? (B?? C?? D)(B?? C?? D)( A?? B?? C?? D)
1-17 已知函数
? F1?? ACD?? ABD?? BCD?? ACD ??
?? F2?? AC D?? BC?? AC D ??
? F3???? m (2, 4, 6,9,13,14) d?? (0,1,3,8,11,15) ????
?? F4?? BC?? ABD?? ABD?? ABCD,约束条件:ABD?? ABD?? 0
用卡诺图求:
(1) Y1?? F1 ?? F2 ; (2) Y2?? F1?? F2
(3) Y3?? F1?? F2 ; (4) Y4?? F3?? F4
(5) Y5?? F3?? F4 ; (6) Y6?? F3?? F4 解:
(1) Y1?? D?? AB?? BC
AB
AB
CD 00 01 11 10 CD 00 01 11 10 00 0
1
0
0
00
0
0
0
0
01 0
01
1
11 1 0 1 1 1 0 +
11 1 10 0
1 1
0
0
1
10
1
0 1 0 1 0
F
0
1 1
1
F2
(2) Y2?? ACD?? ABCD
(3) Y3?? AB?? ACD ?? ACD?? BC D
AB
CD 00 01 11 10 00
0
1
0
0
01 1 1 1 1
11 10
1 1
1 1
1 0
1
1
Y1
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