Electronics-Digital Electronics: Boolean Identities [IAS (Admin.) Mains Physics]: Questions 1 - 3 of 3
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Question 1
Question 2
Appeared in Year: 2007
Describe in Detail Subjective▾
Give the Boolean expression and the truth table for an XOR gate. Why NAND gates are called universal gates? Realise OR and XOR gates employing only NAND gates.
EditExplanation
The circuit of an exclusive – OR gate is shown in Fig (1a) . As obvious, there are two inputs and one output. The exclusive – OR operation is denoted by . Hence the expression for the output of the circuit is give as
… (212 more words, 26 figures) …
Question 3
Appeared in Year: 2011
Describe in Detail Subjective▾
Simplify the logical expression B and draw the logical circuit to implement it. (Mark: 15)
EditExplanation
- De- Morgan՚s laws are commonly written as and
- Where. is the logical AND.
- + is the logical OR.
- The
… (61 more equations, 11 figures) …