**De Morgan’s law**

**(i)Statement**

The theorem states that the complement of sum of variables is equal to the product of their individual complements.

Know Electronics

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**De Morgan’s law**

**(i)Statement**

The theorem states that the complement of sum of variables is equal to the product of their individual complements.

**AND**

Output of AND gate is high is only when both inputs are high. Its operation is denoted by DOT (.) operator.

Logic Symbol-

Truth Table

**Binary to gray code**

- First, write the binary code and copy down MSB. The MSB of gray and binary code are same.
- Then, add MSB and next lower significant bit and write down the addition of them.
- Continue the same process for all bits.

Let us first see how to convert decimal number to 9′s and 10′s complement. 9′s complement of decimal number can be obtained by ((10^{n} - 1)-number) where n represents the number of digits in given number. 10′s complement can be obtained by (10^{n} – number) where n represents the number of digits in given number.

Consider - (1234)_{10} 9′s complement = 10^{4}-1-1234 = 9999-1234 = 8765

10′s complement = 10^{4}-1234 = 8766 Continue reading

**Binary addition**

****Some **rules** to know before we move to **binary addition**.

0 + 0 = 0

0 + 1 = 1

1 + 0 = 1