1-An address
used by programmers in a system supporting virtual memory concept is
called virtual address and the set of such
addresses are called address space.
2-The method
for updating the main memory as soon as a word is removed from the
Cache
is called- write-back
3-A control
character is sent at the beginning as well as at the end of each block in the
synchronous-transmission
in order to-Supply information needed to separate the incoming bits into
individual character.
4-In a
non-vectored interrupt, the address of interrupt service routine is -Assigned
to a fixed memory location.
5-Divide
overflow is generated when-Sign of the dividend is same as that of divisor.
6-Which method
is used for resolving data dependency conflict by the compiler
Itself-Delayed
load.
7-Stack
overflow causes-Internal interrupt.
8-Arithmetic
shift left operation-Produces the same result as obtained with logical shift
left operation. For Examp-
9-Zero address
instruction format is used for-Stack-organized architecture.
10-Address
symbol table is generated by the-assembler.
11-The
negative numbers in the binary system can be represented by-2's complement
13-ABCD -
seven segment decoder / driver in connected to an LED display.
Which segments
are illuminated for the input code DCBA = 0001. A)b, c
14-How many
flip-flops are required to produce a divide-by-32 device? 5
15-The content
of a 4-bit register is initially 1101. The register is shifted 2 times to
the right with
the serial input being 1011101.
What is the
content of the register after each shift?- 1110, 0111
16-How many
different addresses are required by the memory that contain 16K
words?- 16,384
17-What is the
bit storage capacity of a ROM with a 512' 4-organization?- 2048
18-DMA
interface unit eliminates the need to use CPU registers to transfer data
From-Memory to
I/O units
19-How many
128 x 8 RAM chips are needed to provide a memory capacity of
2048 bytes?-16
20-Which of
the following is a self complementing code?-8421
21-Which gate
can be used as anti-coincidence detector?-XOR
22-Which of
the following technology can give high speed RAM?- ECL
23-In 8085
microprocessor how many I/O devices can be interfaced in I/O mapped
I/O
technique?- 256 input devices & 256 output devices.
24-After
reset, CPU begins execution of instruction from memory address-0000H
25-Which
is true for a typical RISC architecture?- Micro programmed control unit.
26-When an
instruction is read from the memory, it is called-Fetch cycle
27-Which
activity does not take place during execution cycle?- Branch address is
calculated & Branching conditions are
checked.
28-A circuit
in which connections to both AND and OR arrays can be
programmed is
called-RAM
29-If a
register containing data (11001100)2 is subjected to arithmetic shift left
operation,
then the content of the register after 'ashl' shall be-(10011000)2
30-Which logic
is known as universal logic? NAND logic.
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 Å 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-
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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