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Solution for Live Quiz Session: (Digital & MP)

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Question 1

The content (in Hexadecimal) of some of the memory locations in an 8085A based system are given below:

The contents of stack pointer (SP), program counter (PC) and (H,L) are 2700H, 2100H and 0000H respectively. When the following sequence of instructions are executed,
2100 H: DAD SP
2101 H: PCHL
the contents of (SP) and (PC) at the end of execution will be

Question 2

In the 4 × 1 multiplexer, the output F is given by F = A ⊕ B. Find the required input ‘I₃I₂I₁I₀’.

Question 3

The voltage comparator shown in figure can be used in the analog-to-digital conversion as

Question 4

Which one of the following statements regarding the INT (interrupt) and the BRQ (bus request) pins in a CPU is true?

Question 5

In an 8 bit microprocessor, which among the following is knows as high order register?

Question 6

The 8085 assembly language instruction that stores the contents of H and L registers into the memory locations 2050_Hand 2051_H, respectively, is:

Question 7

The simplified form of the Boolean expression

can be written as

Question 8

The shift register shown in Figure is initially loaded with the bit pattern 1010. Subsequently the shift register is clocked, and with each clock pulse the pattern gets shifted by one bit position to the right. With each shift, the bit at the serial input is pushed to the left most position (MSB). After how many clock pulses will the content of the shift register become 1010 again?