103原住民特考計算機概要,布林函數問題 - 特考
By Kristin
at 2015-06-11T21:30
at 2015-06-11T21:30
Table of Contents
小弟自認對數位邏輯還可以
今天看到這題,原本覺得很簡單,但怎麼算就是沒答案
看解答後,感覺還是有問題,故上來發問
A B C | S
------|---
0 0 0 | 1
0 0 1 | 1
0 1 0 | 0
0 1 1 | 0
1 0 0 | 0
1 0 1 | 1
1 1 0 | 1
1 1 1 | 0
上面是真值表,要求S的布林函數
(A)S =AB+A(B⊕C)
(B)S =AB+A(B+ C)
(C)S =(AB)+A(B⊕C)
(D)S =BC+C(A⊕B)
答案是(A)
我個人算的是B'C+C'(A反互斥B)
我看解答後,怎麼想都覺得A不太可能,因為A如果是0,照理說S應該都是0
請問是小弟哪裡算錯了嗎??求糾正阿...........
這麼簡單的數位邏輯我都解不出來,整個有點崩潰.........
--
今天看到這題,原本覺得很簡單,但怎麼算就是沒答案
看解答後,感覺還是有問題,故上來發問
A B C | S
------|---
0 0 0 | 1
0 0 1 | 1
0 1 0 | 0
0 1 1 | 0
1 0 0 | 0
1 0 1 | 1
1 1 0 | 1
1 1 1 | 0
上面是真值表,要求S的布林函數
(A)S =AB+A(B⊕C)
(B)S =AB+A(B+ C)
(C)S =(AB)+A(B⊕C)
(D)S =BC+C(A⊕B)
答案是(A)
我個人算的是B'C+C'(A反互斥B)
我看解答後,怎麼想都覺得A不太可能,因為A如果是0,照理說S應該都是0
請問是小弟哪裡算錯了嗎??求糾正阿...........
這麼簡單的數位邏輯我都解不出來,整個有點崩潰.........
--
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at 2015-06-13T04:55
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