GATE IN 2018 Question Paper (04-Feb-2018) (Shift 2)

The circuit given uses ideal op-amps. The current I (in μA) drawn from the source vₛ is (up to two decimal places) ____.

The product of sum expression of a Boolean function F(A, B, C) of three variables is given by F(A, B, C) = ( A + B + C̅) ∙ (A + B̅ + C̅) ∙ ( A̅+ B + C ) ∙ ( A̅+ B̅ + C̅)

The canonical sum of product expression of F(A, B, C) is given by

A 2-bit synchronous counter using two J-K flip flops is shown. The expressions for the inputs to the J-K flip flops are also shown in the figure. The output sequence of the counter starting from Q₁Q₂ = 00 is

A portion of an assembly language program written for an 8-bit microprocessor is given below along with explanations. The code is intended to introduce a software time delay. The processor is driven by a 5 MHz clock. The time delay (in μs) introduced by the program is _______.

MVI B, 64H ; Move immediate the given byte into register B. Takes 7 clock periods.

LOOP: DCR B; Decrement register B. Affects Flags. Takes 4 clock periods.

JNZ LOOP; Jump to address with Label LOOP if zero flag is not set. Takes 10 clock periods when jump is performed and 7 clock periods when jump is not performed.

The Boolean function F(X, Y) realized by the given circuit is