[問題] 計算機概論
1.Which Boolean formula is not a tautology??
A.(A=>B)=>(B=>A)
B.A=>(~A=>B)
C.(A=>A)=>(B=>B)
2.在布林代數中，xyz+x'y'z+xy'z'+x'yz'=?
A. x ⊕ y ⊕ z
B. x'⊕ y ⊕ z
C. x ⊕ y'⊕ z
D. x ⊕ y ⊕ z'
3.正邏輯的AND閘 相當於負邏輯的OR閘
why= =?? 為啥不是NAND??
4.xz+x'yz = z(x+x'y)
= z(x+x')(x+y) <==這裡開始看不懂 為啥(x+x'y)可以拆成(x+x')(x+y)??
= z(x+y)
= zx+yz
謝謝大家!
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◆ From: 36.233.199.15
推
07/06 13:53, , 1F
07/06 13:53, 1F
※ 編輯: newy 來自: 36.233.199.15 (07/06 13:56)
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07/06 14:00, , 2F
07/06 14:00, 2F
推
07/06 14:09, , 3F
07/06 14:09, 3F
AND OR
00 0 00 0 怎有相反呢~"~ 不懂 是NAND吧??
01 0 01 1
10 0 10 1
11 1 11 1
※ 編輯: newy 來自: 36.233.199.15 (07/06 14:18)
推
07/06 14:32, , 4F
07/06 14:32, 4F
→
07/06 14:36, , 5F
07/06 14:36, 5F