MICROPROCESSORS MODEL PAPER


FOUR YEAR B.TECH DEGREE (VSU) EXAMINATION
Third Year Examination
Second Semester
Electronics & Communication Engineering
MICROPROCESSOR AND APPLICATIONS
 (MODEL QUESTION PAPER)
Time: 3 Hours MAX: 60 Marks
Answer any five questions, choosing one full question from each unit.
All questions carry equal marks
UNIT-I
  1     (a) what is microprocessor? Explain about architecture of 8086 microprocessor? (8)
         (b)Describe the register set of 8086. (4)
(OR)
   2     (a) Explain the addressing modes of 8086 micro processor with examples. (6)
          (b) Explain minimum mode of operation of 8086. (6)

UNIT-II

   (a) Explain the following with examples.
(I)AAA (II) SBB (III) DAA (IV) CMP (8)
         (b) Write an ALP to find the average of ‘n’ numbers. (4)
(OR)
(a) Explain the following Assembler Directives with examples. (8)
(I)ASSUME (II) DB (III) SEGMENT (IV) ORG (V) EVEN (VI) PROC
         (b) Write an ALP of 8086 to interchange the two words from 2100H and 2102H. (8)

UNIT-III

 5   (a) Explain the block diagram of 8259 PIC. (6)
      (b) What is DMA? Explain the basic principle of DMA operation with neat sketch. (6)
(OR)
  6   (a) Draw the block diagram and explain about USART (8251). (8)
        (b) Compare UART and USART. (4)

UNIT-IV

  7 (a) Show the block diagram to interface ADC (0808) with 8086 microprocessor using 8255 and write                  an ALP. (6)
       (b) Write an ALP to generate sawtooth waveform. (6)
(OR)
   8   (a) explain the block diagram of 8255 PPI. (6)
        (b) Interface 64K RAM and 128K ROM to 8086 using memory chips of size 32K RAM and 64K ROM  (6)

UNIT-V

  9   (a) Explain about the architecture of 8051 microcontroller. (6)
         (b) Explain internal memory management of 8051 with neat diagram. (6)
(OR)
 10   (a) Explain the addressing modes supported in 8051 Micro controller. (6)
        (b) What are the various Special Function Registers (SFR) required to use 8051 microcontroller. (6)

IT HAD BEEN A LONG TIME FOR ME TO...............

IT HAD BEEN A LONG TIME FOR ME TO EDIT THIS BLOGGER...............

IT HAD BEEN A LONG TIME...........

IT HAD BEEN A LONG TIME........THAT I OPENED IT AFTER A MONTH.FIRST OF ALL I AM SORRY TO ALL MY FRIENDS FOR NOT UPDATING THIS BLOG AND MY COLLEGE.............
                             

                                         A FEW DAYS BEFORE IN MY COLLEGE,WE CELEBRATED A FUNCTION CALLED ESTATICA----OH IT'S ESTATICA2011 AND I BELIEVE THIS FUNCTION AS ONE TYPE OF GET TO GETHERING OF ABOUT 20 COLLEGES INCLUDING THE FAMOUS S.V UNIVERSITY AND K.S.R.M ENGINEERING COLLEGE AND ABOUT 20 COLLEGES STUDENTS AND FACULTIES ARE INVITED.THOUGH ESTATICA FUNCTION IS ABOUT TWO DAYS ON THE FIRST DAY OF ESTATICA ALMOST ALL OF OUR COLLEGE FRIENDS JOINED TOGETHER AND WE ENJOYED A LOT.AND A HIGHLIGHT ONE I WRITE IS SOME ONE DEDICATED A SONG కాల్లెద్  ' బాసు మనకు మెమరీ లాసు.........  ' TO DR.SREEDHAR SIR AND IT'S UNBELIEVABLE THAT THOUGH IT'S A JOKE BUT SOMEONE SAID THAT THIS MATTER HAD BECAME SERIOUS...........

                                       AND ON THE SECOND DAY OF ESTATICA I MISSED A LOT OF FUN BECAUSE I CAME TO TIRUPATHI--MY NATIVE PLACE.

                                        ONE WHO MISSED THIS PROGRAM HAD MISSED ONE OF THE SWEETEST MEMORY OF COLLEGE DAYS.....................

                                           - T.MUNIKRISHNA,

                                             EEE DEPARTMENT,     

                                             NBKR IST.

NOT THE GREAT INDIAN CULTURE BUT JUST AN INDIAN CULTURE..........

THIS IS MY FIRST NEGATIVE POST I BELIEVE IT SO BECAUSE  HERE I AM ABUSING THE INDIAN CULTURE AS NOT THE GREAT INDIAN CULTURE BUT JUST AN INDIAN CULTURE..........






                                   I BELIEVE THAT NOW A DAYS OUR CULTURE IS BECOMING WORST THAN WHEN WE COMPARED TO OLDER ONES.AS INDIA.......NO.....NO.........THE GREAT INDIA  HAS A DIFFERENT CULTURES AND TRADITIONS IN OLDEN DAYS BUT NOW IT IS SPOILED BY US.
                                     AS PER OUR ENGLISH EXAM QUESTION IN OUR SECOND MID EXAMINATION 
"TECHNOLOGY IS SPOILING INDIAN CULTURE"-DO YOU THINK THAT THE QUESTION ASKED IS RIGHT ONE,DON'T YOU?........NO I DON'T THINK SO THAT THE QUESTION ASKED IN OUR EXAM IS RIGHT ONE BECAUSE TECHNOLOGY IS NOT SPOILING INDIAN CULTURE WE ARE SPOILING OUR INDIAN CULTURE YA.........WE ARE.........WE ARE SPOILING INDIAN CULTURE.NOW A DAYS NOT ONLY IN CITIES BUT ALSO IN VILLAGES THE MODERN FASHIONS ARE SPREADING DAY BY DAY AND WHOM DO YOU THIN THAT THIS FASHIONS ARE SPREADING ?IS IT TECHNOLOGY OR BY US.
                     HMMM........THATS NOTHING BUT WE ARE SPREADING THESE FASHIONS AND DAY BY DAY WE ARE FORGETTING ABOUT OUR CULTURE AND TRADITIONS.
                    AS I AM TRYING TO TELL ONLY TRUTHS IN MY LIFE THOUGH IT IS DIFFICULT BUT I WILL TELL YOU ONE EXAMPLE----SEE MY FRIENDS AS I AM A BOY I USED TO FIND GIRLS WHEN EVER I GO TO TEMPLE AND NOW A DAYS THERE ARE NO GIRLS AT ALL IN TEMPLES.THIS IS ONE OF AN EXAMPLE I GIVE YOU MY FRIENDS AND ONE QUESTION I PUT YOU IN FRONT OF YOU ..,
            
           "WHY ARE WE BLIND ABOUT OUR RICH CULTURE"
                                   THIS IS ALSO A QUESTION ASKED IN MY  9TH STANDARD TO THE AUDIENCE IN MY SCHOOL.I DIDN'T RECEIVED ANSWER ON THAT DAY FROM THE AUDIENCE
             CAN YOU ANSWER IT--------DO YOU THINK YOU ARE TELLING A RIGHT ANSWER........
               THEN THINK ABOUT YOUR ANSWER ONCE.     
           
               AND TELL NOW WHAT'S THE ANSWER WAS....................NO NO I THINK SO YOU DIDN'T FIND THE ANSWER FOR THIS QUESTION,IF YOU HAVE FIND SO YOU ARE REALLY A GENIUS MY FRIEND........


                    SO I WOULD LIKE TO SAY THAT INDIAN CULTURE NOT GREAT AS PER NOW AND JUST AN INDIAN CULTURE NOT THE GREAT..............
                  AND ONE REQUEST I WOULD ASK YOU MY FRIENDS 
DON'T THINK THAT I AM A TRAITOR,DO YOU........?
                                          -BY MUNIKRISHNA

                       

                                               
                                
                              

The Nile is the longest river in the world, stretching north for approximately 4,000 miles from East Africa to the Mediterranean. Studies have shown that the River (Iteru, meaning, simply, River, as the Egyptians called it) gradually changed its location and size over millions of years. The Nile flows from the mountains in the south to the Mediterranean in the north. Egyptians traveling to other lands would comment on the "wrong" flow of other rivers. For example, a text of Tuthmosis Iin Nubia describes the great Euphrates river as the "inverted water that goes downstream in going upstream."

Three rivers flowed into the Nile from the south and thus served as its sources: the Blue Nile, the White Nile and the Arbara. Within the southern section between Aswan and Khartoum, land which was called Nubia, the River passes through formations of hard igneous rock, resulting in a series of rapids, or cataracts, which form a natural boundary to the south. Between the first and second cataracts lay Lower Nubia, and between the second and sixth cataracts lay upper Nubia.

Along most of its length through Egypt, the Nile has scoured a deep, wide gorge in the desert plateau. At Aswan North of the first cataract the Nile is deeper and its surface smoother. Downstream from Aswan the Nile flows northerly to Armant before taking a sharp bend, called the Qena. From Armant to Hu, the River extends about 180 kilometers and divides the narrow southern valley from the wider northern valley.

Southern Egypt, thus being upstream, is called Upper Egypt, and northern Egypt, being downstream and the Delta, is called Lower Egypt. In addition to the Valley and the Delta, the Nile also divided Egypt into the Eastern and Western Deserts.

The Nile Valley is a canyon running 660 miles long with a floodplain occupying 4,250 square miles. The Delta spans some 8,500 square miles and is fringed in its coastal regions by lagoons, wetlands, lakes and sand dunes.

The Delta represented 63 percent of the inhabited area of Egypt, extending about 200 kilometers from south to north and roughly 400 kilometers from east to west. While today the Nile flows through the Delta in only two principal branches, the Damietta and the Rosetta, in ancient times there were three principal channels, known as the water of Pre, the water of Ptah and the water of Amun. In classical or Graeco-Roman times, these were called the Pelusiac, the Sebennytic, and the Canopic branches. There were additionally subsidiary branches or artificially cut channels.

The most dominant features of the Delta as the sandy mounds of clay and silt that appear as islands rising 1-12 meters above the surrounding area. Since these mounds would not be submerged by the inundation, they were ideal sites for Predynastic and Early Dynastic settlements, and indeed evidence of human habitation have been found. Perhaps these mounds rising above the water table inspired the ancient belief of creation as having begun on a mound of earth that emerged from the primordial waters of Nun (Pyramid Text 600).

There were several major oases of the Western desert, which comprised about 2/3 of Egypt: the Fayoum, where during the Middle Kingdomperiod the capital of all Egypt was situated, and which increasingly became one of the most densely populated and agriculturally productive area in Egypt, the Bahriya, where many sarcophagi of the Graeco-Roman period have been found, the so-called Golden Mummies, Kharga andDakhla, which were known for their excellent wines, and Siwa, whose Oracle of Amun was consulted by Alexander the Great to demonstrate that he was the true successor to the kingship of Egypt.

The Eastern Desert was exploited in Pharaonic times for its rich minerals.

The mere mention of the name of the Nile evokes for modern man images of Pyramids, great temples, fantastic tales of mummies, and wondrous treasures. But the Nile represents life itself to the people of Egypt, ancient and modern. In fact, for thousands of years, the River has made life possible for hundreds of thousands of people and animals, and has shaped the culture we today are only beginning to truly understand.

The River filled all areas of life with symbolism. In religion, for example, the creator sun-god Ra (Re) was believed to be ferried across the sky daily in a boat (compare that to the Greeks and Romans whose non-creator sun-god rode across the sky in a chariot driven by fiery horses, and Hymns to Hapy (Hapi), the deity personifying the Nile, praise his bounty and offerings were left to him, and the creation myths, as mentioned earlier, revolve around the primordial mound rising from the floodwaters surrounding it; in ritual where Nile creatures such as the hippopotamus, whose shape the goddess Tawaret took, or the crocodile, called Sobek, or Heket (Heqet), the frog, deities deemed powerful in the processes of childbirth and fertility, were revered, in writing, where floral signs such as the lotus and papyrus figured prominently, in architecture, where the very structure of temples emulated the mounds of the Nile and its waves, from the bottom to the top of capital columns and the trim on walls, and in travel, where models of boats have been found dating from the fifth millennium BCE.

HAVE YOU SEEN THE SIGNATURE OF GANDHI

THIS IS THE SIGNATURE OF MAHATMA

I BELIEVE HIM IN ALL ATTITUDES OF LIFE......

SWAMI VIVEKANANDA[1863-1902]

SWAMI VIVEKANANDA'S inspiring personality was well known both in India and in America during the last decade of the nineteenth century and the first decade of the twentieth. The unknown monk of India suddenly leapt into fame at the Parliament of Religions held in Chicago in 1893, at which he represented Hinduism. His vast knowledge of Eastern and Western culture as well as his deep spiritual insight, fervid eloquence, brilliant conversation, broad human sympathy, colourful personality, and handsome figure made an irresistible appeal to the many types of Americans who came in contact with him. People who saw or heard Vivekananda even once still cherish his memory after a lapse of more than half a century.

In America Vivekananda's mission was the interpretation of India's spiritual culture, especially in its Vedantic setting. He also tried to enrich the religious consciousness of the Americans through the rational and humanistic teachings of the Vedanta philosophy. In America he became India's spiritual ambassador and pleaded eloquently for better understanding between India and the New World in order to create a healthy synthesis of East and West, of religion and science.

In his own motherland Vivekananda is regarded as the patriot saint of modern India and an inspirer of her dormant national consciousness, To the Hindus he preached the ideal of a strength-giving and man-making religion. Service to man as the visible manifestation of the Godhead was the special form of worship he advocated for the Indians, devoted as they were to the rituals and myths of their ancient faith. Many political leaders of India have publicly acknowledged their indebtedness to Swami Vivekananda.

The Swami's mission was both national and international. A lover of mankind, he strove to promote peace and human brotherhood on the spiritual foundation of the Vedantic Oneness of existence. A mystic of the highest order, Vivekananda had a direct and intuitive experience of Reality. He derived his ideas from that unfailing source of wisdom and often presented them in the soulstirring language of poetry.

The natural tendency of Vivekananda's mind, like that of his Master, Ramakrishna, was to soar above the world and forget itself in contemplation of the Absolute. But another part of his personality bled at the sight of human suffering in East and West alike. It might appear that his mind seldom found a point of rest in its oscillation between contemplation of God and service to man. Be that as it may, he chose, in obedience to a higher call, service to man as his mission on earth; and this choice has endeared him to people in the West, Americans in particular.

In the course of a short life of thirty-nine years (1863-1902), of which only ten were devoted to public activities-and those, too, in the midst of acute physical suffering-he left for posterity his four classics: Jnana-Yoga, Bhakti-Yoga, Karma-Yoga, and Raja-Yoga, all of which are outstanding treatises on Hindu philosophy. In addition, he delivered innumerable lectures, wrote inspired letters in his own hand to his many friends and disciples, composed numerous poems, and acted as spiritual guide to the many seekers, who came to him for instruction. He also organized the Ramakrishna Order of monks, which is the most outstanding religious organization of modern India. It is devoted to the propagation of the Hindu spiritual culture not only in the Swami's native land, but also in America and in other parts of the world.

Swami Vivekananda once spoke of himself as a "condensed India." His life and teachings are of inestimable value to the West for an understanding of the mind of Asia. William James, the Harvard philosopher, called the Swami the "paragon of Vedantists." Max Muller and Paul Deussen, the famous Orientalists of the nineteenth century, held him in genuine respect and affection. "His words," writes Romain Rolland, "are great music, phrases in the style of Beethoven, stirring rhythms like the march of Handel choruses. I cannot touch these sayings of his, scattered as they are through the pages of books, at thirty years' distance, without receiving a thrill through my body like an electric shock. And what shocks, what transports, must have been produced when in burning words they issued from the lips of the hero!''

NIKHILANANDA
Ramakrishna-Vivekananda Center
New York
January 5, 1953