Important objectives of Computer Architecture (30-60)
Comprehensive Viva Questions
31-The time for which the D-input of a D-FF must not change after the clock is applied is known as-Hold time.
32-How many memory chips of (128 x 8) are needed to provide a memory capacity of 4096 x 16?- 64
33-In addition of two signed numbers, represented in 2' s complement form generates an overflow if-A ??B ??1
34-Addition of (1111)2 to a 4 bit binary number 'a' results:- No change
35-In a microprocessor system, suppose. TRAP, HOLD, RESET Pin got activated at the same time, while the processor was executing some instructions, then it will first respond to-None
36-Pseudo instructions are-Machine instructions
37-An attempt to access a location not owned by a Program is called-Address fault
38-Dynamic RAM consumes _Less_ Power and _Slower_ then the Static RAM.
39-Which flag of the 8085's flag register is not accessible to programmer directly?-- Auxiliary carry flag
40-Cache memory works on the principle of-Locality of reference
41- Which of the following is a Pseudo instruction?- END
42- A demultiplexer can be used as- Decoder
43- Excess-3 equivalent representation of (1234)H is- (4567)Ex-3
44- Which of the memory holds the information when the Power Supply is switched off?- EEROM
45- Minimum no. of NAND gate required to implement a Ex-OR function is- 4
46- Which of the following interrupt is maskable?- RST 7.5
47- Which of the following expression is not equivalent to x?- x NOR 1
48- Word 20 contains 40 ; Word 30 contains 50 ;
Word 40 contains 60 ; Word 50 contains 70
Which of the following instructions does not, load 60 into the Accumulator- Load direct 30
49- An interrupt for which hardware automatically transfers the program to a specific memory location is known as- Hardware interrupt
50- Synchronous means _______ At same time
51- 'n' Flip flops will divide the clock frequency by a factor of- n
52- In DMA the data transfer is controlled by- I/O devices
53- The number of instructions needed to add a numbers an store the result in memory using only
one address instruction is- Independent of n
54- Negative numbers cannot be represented in- 2's complement form
55- Which of the following architecture is/are not suitable for realizing SIMD- Von Neumann
56- In Boolean expression A+BC equals- (A+B)(A+C)
57- A JK flip-flop can be implemented using D flip-flop connected such that-(A+B)(A+c)
58- An effective solution to the power consumption problem lies in using _______ transistors to
implement ICs.- both NMOS & PMOS
59- Memory interleaving technique is used to address the memory modules in order to Have- reduced complexity in mapping hardware
60- In a multiprogramming system, which of the following is used- Paging concept
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