数字逻辑 - 真值表
我正在尝试使用下面的公式通过真值表来解决这些问题。我在 NOT 到 NAND 方面遇到问题
我想我正确使用了前 2 个问题: AND 相当于 NOR,AND 相当于 NAND
使用 NAND 运算符的 AND、OR 和 NOT 的方程是:
X + Y = x' NAND y' ??
X * Y =
X' = X NAND 1
AND 的方程、 OR 和 NOT 仅使用 NOR 运算符是:
X' = ?
X + Y = (X NOR Y) NOR 0
X * Y = X' NOR Y' ??
我正在尝试遵循这个公式,
An OR gate with a NOT in both inputs is equivalent to a NAND.
An AND gate with a NOT in both inputs is equivalent to a NOR.
An OR gate with a NOT in its output is equivalent to a NOR.
An AND gate with a NOT in its output is equivalent to a NAND.
这就是我如何计算出 AND 到 NOR 等效值
X Y X AND Y X NOR Y
-----------------------------
0 0 0 1
0 1 0 0
1 0 0 0
1 1 1 0
X' Y' X' NOR Y'
-------------------
1 1 0
1 0 0
0 1 0
0 0 1
我最大的问题是如何在真值表的输出中使用 NOT ?另外,我如何从 NOT 变为 NOR?我想在真值表中计算出所有这些。
X * Y = "An AND gate with a NOT in its output is equivalent to a NAND."
真值表的输出是什么?我怎样才能从 X' 变成同等的 NAND?
I am trying to solve these problems with truth tables using the formulas below. I am having a problem with the NOT to NAND
I think i got the first 2 problems correct using: AND is equivalent to NOR, AND is equivalent to NAND
The equations for AND, OR and NOT using the NAND operator are:
X + Y = x' NAND y' ??
X * Y =
X' = X NAND 1
The equations for AND, OR and NOT using only the NOR operator are:
X' = ?
X + Y = (X NOR Y) NOR 0
X * Y = X' NOR Y' ??
I am trying to follow this formula
An OR gate with a NOT in both inputs is equivalent to a NAND.
An AND gate with a NOT in both inputs is equivalent to a NOR.
An OR gate with a NOT in its output is equivalent to a NOR.
An AND gate with a NOT in its output is equivalent to a NAND.
this is how i worked out AND to NOR equivalent
X Y X AND Y X NOR Y
-----------------------------
0 0 0 1
0 1 0 0
1 0 0 0
1 1 1 0
X' Y' X' NOR Y'
-------------------
1 1 0
1 0 0
0 1 0
0 0 1
My biggest problem is how do i use a NOT in the outputs in a truth table? Also, how would i go from a NOT to a NOR? I want to work all these out in a truth table.
X * Y = "An AND gate with a NOT in its output is equivalent to a NAND."
what are the outputs in a truth table? and how can i go from a X' to equivalent NAND?
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我们知道,
因此,
所以我们得到,
对于你的第二个问题,假设你有两个输入
X'
&Y'
并且您想要到达X NAND Y
,X NAND Y = (X AND Y)' = X' OR Y'
(由德摩根定律)因此,真值表如下:
We know that,
Hence,
So we get,
For your second question, suppose you have two inputs
X'
&Y'
and you want to get toX NAND Y
,X NAND Y = (X AND Y)' = X' OR Y'
(by DeMorgan's Law)Hence, the truth tables are as follows:
如果您想在输出上指示反极性,请在列标签上放置一个横条。
将 NOR 的两个输入连接在一起。这使得它相当于 NOT。
Put a bar over the column label, if you want to indicate reverse-polarity on the output.
Tie the two inputs of the NOR together. That makes it the equivalent of a NOT.