MPMC & Signals  3rd year EIE
COMMENZAR 2K19
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How many buses are connected as part of the 8085A microprocessor?
1 point
2
3
5
8
The ensures that only one IC is active at a time to avoid a bus conflict caused by two ICs writing different data to the same bus.
1 point
control bus
control instructions
address decoder
CPU
The control bus and memories share a bidirectional bus in a typical microprocessor system.
1 point
True
False
Because, microprocessor CPUs do not understand mnemonics as they are, they have to be converted to ___________
1 point
hexadecimal machine code
binary machine code
assembly language
all of the above
A register in the microprocessor that keeps track of the answer or results of any arithmetic or logic operation is the:
1 point
stack pointer
program counter
instruction pointer
accumulator
Which of the following buses is primarily used to carry signals that direct other ICs to find out what type of operation is being performed?
1 point
data bus
control bus
address bus
address decoder bus
The work of EU is
1 point
encoding
decoding
processing
calculation
The BIU prefetches the instruction from memory and store them in
1 point
queue
memory
stack
register
A 20bit address bus allows access to a memory of capacity
1 point
1 Mb
2Mb
4Mb
8Mb
_________signal prevent the microprocessor from reading the same data more than one
1 point
handshaking
pipelining
controlling
signalling
If a signal f(t) has energy E, the energy of the signal f(2t) is equal to
1 point
E
E/2
2E
4E
The Fourier series of an odd periodic function, contains only
1 point
odd harmonics
even harmonics
cosine terms
sine terms
The amplitude spectrum of a Gaussian pulse is
1 point
uniform
a sine function
gaussian
an impulse function
The Fourier transform of a conjugate symmetric function is always
1 point
imaginary
conjugate antisymmetric
real
conjugate symmetric
Flat top sampling of low pass signals
1 point
gives rise to aperture effect
implies oversampling
leads to aliasing
introducing delay distortion
The Nyquist sampling interval, for the signal sinc(700 t) + sinc(500 t) is
1 point
1350 sec
(350*3.14) sec
1700 sec
(175*3.14) sec
Compression in PCM refers to relative compression of
1 point
higher signal amplitudes
lower signal amplitudes
lower signal frequencies
higher signal frequencies
The region of convergence of the z – transform of a unit step function is
1 point
z > 1
z < 1
(Real part of z) > 0
(Real part of z) < 0
The z – transform of a signal is given by (z) =1/4 z^−1(1 – z^−4)/ (1 – z^−1)^2 . Its final value is
1 point
0.25
0
1
infinity
A bandlimited signal is sampled at the Nyquist rate. The signal can be recovered by passing the samples through
1 point
an RC filter
an envelope detector
a PLL
an ideal lowpass filter with the appropriate bandwidth
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