GATE ECE 2001 | Combinational Circuits Question 35 | Digital Circuits

GATE ECE 2001

MCQ (Single Correct Answer)

-0.6

In the TTL circuit in Figure 2.11, $${S_0}$$ to $${S_0}$$ are select lines and $${X_7}$$ and $${X_0}$$are input lines. $${S_0}$$ and $${X_0}$$ are LSB'. The output Y is GATE ECE 2001 Digital Circuits - Combinational Circuits Question 39 English

GATE ECE 2001 Digital Circuits - Combinational Circuits Question 39 English

indeterminate

A ⊕ B

$$\overline {A \oplus B} $$

$$\overline C \,(\overline {A \oplus B)} \, + C(A \oplus B)$$

GATE ECE 1999

MCQ (Single Correct Answer)

-0.6

For a binary half-sub-tractor having two inputs A and B, the correct set of logical expressions for the outputs D (=A minus B) and X (=borrow) are

$$D = \,AB + \overline A \,B,\,X = \overline A \,B$$

$$D = \,\overline A \,B + A\overline B + A\overline B ,\,X = A\overline B $$

$$D = \,\overline A \,B + A\overline B ,\,X = \overline A \,B$$

$$D = \,AB + \overline A \,\overline B ,\,X = A\overline B $$

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