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List of top Digital Electronics Questions asked in GATE EC

f(w, x, y, z) =\( \Sigma\) (0, 2, 5, 7, 8, 10, 13, 14, 15) 
Find the correct simplified expression. 
 

  • GATE EC - 2026
  • GATE EC
  • Digital Electronics
  • Karnaugh Maps

The figure shows a 4-to-1 multiplexer. The inputs are connected as: 
$I_0 = 1$,  $I_1 = 0$,  $I_2 = 1$,  $I_3 = y$. 
The select lines are $S_1 = x$ and $S_0 = z$. 
Find the Boolean function $f(x,y,z)$. 
 

  • GATE EC - 2026
  • GATE EC
  • Digital Electronics
  • Multiplexers
What operation is performed by the given circuit?
  • GATE EC - 2025
  • GATE EC
  • Digital Electronics
  • Digital Logic

The content of the registers are \( R_1 = 25H \), \( R_2 = 30H \), and \( R_3 = 40H \). The following machine instructions are executed. 

After execution, the content of registers \( R_1 \), \( R_2 \), \( R_3 \) are

  • GATE EC - 2021
  • GATE EC
  • Digital Electronics
  • Shift-registers