Digital Electronics MCQ Questions & Answers | ECE

A. -3 in two's complement system

B. 7 in sign magnitude system

C. -5 in two's complement system

D. -2 in sign magnitude system

A. A + BC

B. BC

C. AB

D. AB + C

A. VCO

B. D/A converter

C. power amplifier

D. Op-Amp

A. OR gate

B. NOR gate

C. NAND gate

D. AND gate

A. W₁

B. W₂

C. W₃

D. W₄

A. In K-maps, don't care terms are used only if they help in reducing the expression. Otherwise, they need not be considered

B. A two-variable K-map expression can have 4 possible combinations of the input variables

C. The binary number designations of the rows and columns of the K-map are in Gray code

D. The five-variable map may contain 2-squares, 4-squares, 8-squares, or other combinations involving four blocks of K-map having 16 squares each

A. 522

B. 225

C. 252

D. 250

A. 16

B. 10

C. 8

D. 6

A. $$\left( {{\text{A}} + {\text{B}}} \right){\text{C}} + {\text{D}}$$

B. $$\overline {\left( {{\text{A}} + {\text{B}}} \right){\text{C}} + {\text{D}}} $$

C. $$\left[ {\left( {{\text{A}}.{\text{B}}} \right) + {\text{C}}} \right].{\text{D}}$$

D. $$\overline {\left[ {\left( {{\text{A}}.{\text{B}}} \right) + {\text{C}}} \right].{\text{D}}} $$

A. 5

B. 10

C. 11

D. 15