Evolution of the Microprocessor

Evolution of the Microprocessor Introduction A microprocessor is that programmable IC that is used for executing instructions to the process of digital data or exercise digital control over the devices. It is primarily works as the central processing unit of computer system. The complexity of todays microprocessors make even modest description how microprocessors work beyond scope of the page. The worlds 1st microprocessor 4004, was co-developed by Buisson i.e. Japanese manufacturer of calculators, Intel U.S. manufacturer of semiconductors.After the development of a general-purpose LSI not only the desktop calculators but also the business machines are originally based on the decimal computer with the stored program methods a basic architecture 4004 was developed on August 1969; a plan for the 4004 system was finalized in Dec 1969; and the 1st microprocessor was successfully developed in Mar 1971. Microprocessors which becomes the technology to open up a new era, brought 2 outstand impacts, power of intelligence and power of computing. 1st microprocessors opened up the new era of programming through replacing with the software, the hardwired logic based on I of the former era of logic. At same that time, microprocessors allowed young engineers use power of computing for creative development of the personal computers and computer games which in turn led to the growth in software industry they paved the way to the development of the high-level performance of microprocessors. Also an engineer must be the armed with firm belief that on his mission is nothing but the development must be determined to the go of his own way, never following otherss track. 4004 performance was only 0.06MPS with 2238 transistors 750 KHz operating frequency. Microprocessors evolved 4 bit 64 bit microprocessor, introducing computer technologies such pipeline super-pipeline super scalar VLIW cache memory, and virtual memory system. Now is possible integrate 16 sets of the microprocessor with the 64GB of memory on board. In the 20th century, microprocessors are used for increase in the power of intelligence. In 21st century, microprocessors will evolve into the tool to bring forth wisdom for whole mankind . The Breakthrough In Microprocessors The switching units in computers that were used in the early 1940s were the mechanical relays. These were devices that opened and closed as they did the calculations. Come the 1950, and the vacuum tubes took over. The Atanasoff Berry Computer used in vacuum tubes as its switching units rather than relays. The switch from mechanical relay to vacuum tubes was an important technological advance as vacuum tubes could perform calculations considerably faster and more efficient than relay machines.This technological advance was short-lived because the tubes could not be made smaller than they were being made and had to be placed close to each other because they generated heat. Then came the transistor which was acknowledged as a revolutionary  development. In â€Å"Fire in the Valley†, describe the transistor as a device which was the result of a series of developments in applications of physics. Transistor has changed the computer from giant electronic brain to commodity like TV set. As a result of the technological breakthrough of transistors, the introduction of minicomputers of the 60s the personal computer revolution of the 70s was made it possible. However, researchers did not stop at the transistors. They wanted a device that  could perform more complex tasks—a device that could integrate a number of  transistors into a more complex circuit. Hence, the terminology, integrated circuits or ICs. Because physically they were tiny chips of silicon, they came to be also referred to as chips. Initially, the demand for ICs was typically the military and aerospace industries which were great users of computers and who were the only industries that could afford computers Later, an engineer at Intel, developed a sophisticated chip. This chip could extract data from its memory and interpret the data as an instruction. The term that evolved to describe such device was â€Å"microprocessor†. Therefore,â€Å"microprocessor† first came into use at Intel in 1972. A microprocessor was nothing more than an extension of the arithmetic and logic IC chips corporating more functions into one chip. Today, the term still refers to an LSI single-chip processor capable of carrying out many of the basic operations of a digital computer. Development Of Microprocessors Microprocessors essentially evolved from mechanical relays to IC what aspects of the computing industry led to the development of microprocessors. (1) Digital Computer Technology We know the computer industry learned to make large, complex digital computers capable of processing more data and also how to build and use smaller, less expensive computers. The digital computer technology is been growing steadily since the late 1940s. (2) Semiconductors It had also been growing steadily since the invention of the transistor in the late 1940s.In 1960s we saw the integrated circuit develop from just a few transistors to many complicated tasks, all of the same chip. (3) The Calculator Industry It appears as if this industry grew overnight during the 1970s from the simplest of four-function calculators to very complex programmable scientific and financial machines. Generation Of Microprocessor Microprocessors were categorized into five generation Their characteristics are described below: A. First-Generation The microprocessors that were introduced 1971 to 1972 were referred as the first generation systems. They processed their instructions serially fetched the instruction, decoded it, then executed it. When an instruction was completed, microprocessor updated the instruction pointer and fetched the next instruction, performing this sequential drill for each instruction in turn. B. Second Generation By the late 1970s , enough transistors were available on the IC to usher in the second generation of microprocessor sophistication: 16-bit arithmetic and pipelined instruction processing. Motorolas MC68000 microprocessor, introduced in 1979, is an example. Another example is Intels 8080. This generation is defined by the overlapped fetch, decode, and execute steps . As the first instruction is processed in the execution unit, the second instruction is decoded and the third instruction is fetched. The distinction between the first and second generation devices was primarily the use of newer semiconductor technology to fabricate the chips. This new technology resulted in a five-fold increase in instruction, execution, speed, and higher chip densities. C. Third Generation The third generation, introduced in 1978, was represented by Intels 8086 and the Zilog Z8000, which were 16-bit processors with minicomputer-like performance. The third generation came about as the IC transistor counts approached 250,000. Motorolas MC68020, for example, incorporated an on-chip cache for the first time and the depth of the pipeline increased to five or more stages. This generation of microprocessors was different from the previous ones in that all major workstation manufacturers began developing their own RISC-based microprocessor architectures . D. Fourth Generation As the workstation companies converted from commercial microprocessors to in-house designs, microprocessors entered their fourth generation with designs surpassing a million transistors. Leading-edge microprocessors such as Intels 80960CA and Motorolas 88100 could issue and retire more than one instruction per clock cycle E. Fifth Generation Microprocessors in their fifth generation, employed decoupled super scalar processing, and their design soon surpassed 10 million transistors. In this generation, PCs are a low-margin, high-volume-business dominated by a single microprocessor V. Micro From Vacuum Tube To Todays Dual-Core Multithreaded Madness Before The Flood In The 1960s Just on the scant in the few years after the first laboratory ICs .Fairchild introduce their first commercial use integrated circuit Already start of decade, process that would last until present day commercial ICs. There is a no doubt but the technology design process were rapidly evolved. Observing the trend Fairchild director of R D Gordon observed that density of elements in the ICs doubling annually predicted that thread would continue next 10 years. With certain amend, this is came to be known Moores Law. The first ICs contained just few transistors per wafe by the dawn of the 70s for 1000 of the transistors per wafer. Its the only matter of the time before the someone would use this capacity to put entire computer on a chip several someones, indeed. Development Explosion: The 1970s The idea of the computer on single chip described in the literature earlier. Finally process had caught up to thinking the computer on the chip was made it possible. The air was an electric with the possibility . Once feat establish rest of the decade saw the prolife of the companies old new getting into semiconductor business as first pc, first arcade games even the first home video game sys are also spreading consumers contacts with the electronics paving way for continued rapid growth in b/w 80s. At beginning of the 70s microprocessors yet not introduced. By end of the decade saturated market led to price wars processors were already introduced16-bit. First Three Three groups claim for the first to put the computer on a chip. The Central Air Data Computer the Intel the Texas Instruments TMS 1000. Where Are They Now ? CADC spent about 20 years in the top secret cold war of the era until finally being classified in the 1998. Thus even it was first that remained under peoples radar even today didnt have chance to influence other until the early microprocessor design. Intel 4004 have the short the mostly history to supersed by the 8008 other early Intel chips. Chip was not finally marketed in standalone form in 1974 for the low price of US $2 per piece. In the year of 1978 a special version of the TITMS 1000 is being brains of educational Speak Spell toy which E.T. jerry rigged to the phone home. Early Intel- 4004 8008 8080 Intel released their 1st single 4-bit all purpose chip the Intel 4004 in Nov 1971. Its clock speed of 108KHz 2,300 transistors with ports for ROM RAM I/O. Originally it was designed for use in the calculator Intel had to negotiate its contract to become able to market its product stand alone processor. Intel 8008 was introduced in the month of April 1972 didnt make much splash being more or less 8-bit 4004. Its primary claim was form the basis for 8080 later 8086 architecture. Intel put back with the 8080 which was used the same instruction set earlier by the 8008 and is generally considered to be first usable microprocessor. Where is Intel stand now? Last time when we checked Intel was on the still around. RCA- 1802 In 1974 RCA released the 1802 of the 8-bit processor with an different architecture than the other 8-bit processors. It consist of a register file of 16 registers that is of 16 bits each using the SEP instruction you can select any of the registers be the program counter. Interesting variation was the two or more than two subroutines a ring so that they were to the be called as the roundrobin order. The RCA 1802 was considered one of the first risc chips. Where Is Now ? RCA chip was the biggest market failure due to slow clock cycle speed. But it can be the fabricated to the radiation resistant so used on Voyage Viking Galileospace probes. IBM 801 In 1975 IBM produced some earliest efforts to build microprocessor based on RISC design. IBM 801 was named after address of where the chip designed but suspect that IBM systems already numbered 601 701. Where Is 801 Now Gone? 801 chip family never saw main use was primarily used in other IBM hardwares. The Evolution Of RISC RISC Relegate the Important Stuff to the Compiler known as load store architectures. In the 1970 research at IBM produced result that the some of the operations are actually slower than the number of smaller operations doing same thing. A famous eg. was the VAXsINDEX instruction which ran slower than loop implementing same code. Moto 6800 Motorola introduced 6800 chip in the 1978 with the 78 instructions probably the first microprocessor with index register. When comes to program flexibility maintenance they are the wasteful when it was comes using scarce computer memory. Where Is 6800 Now Gone? Motorola is the only stand alone processors microcontrollers trace their lineage to mbdew 6800 including popular powerful 6809 of 1979. Where Is Industry Of Microprocessors Going? Almost immediately after their introduction, the microprocessors became the heart of the personal computer. Since then, the improvements have come at an amazing pace. The 4004 ran at 108 kHz thats kilohertz, not megahertz and processed only 4 bits of data at a time. Todays microprocessors and the computers that run on them are thousands of times faster. Effectively, theyve come pretty close to fulfilling Moores Law which states that the number of transistors on a chip will double every 18 month Performance has increased nearly same rate Conclusion The microprocessor are their around for more than 20 years already. It is now comes in many forms sizes levels of sophistication powering all the kinds of applications that they rely on control of computer.althouh the cpu of computer system it needs to interact with some other semiconductor device in order to perform functions. And devices include memory input/output devices constitute rest of the computer system.Thus we know from where microprocessor evolutes till where goes. References Websites: www.google.com www.bharatstudent.com www.electronics4u.com www.wikipedia.com Books: U.S Shah , â€Å"Microprocessor and its applications Ramesh Goankar, â€Å"Microprocessor Architecture , Design and applications of 8085† B.Ram, â€Å"8085 Microprocessor†

Problems and Solutions Internet Addiction.

PROBLEMS AND SOLUTIONS INTERNET ADDICTION. A long with the development of society is the development of scientific and technical, including the development and popularity of the internet. Beside the undeniable benefit is the tremendous impact that the internet bring. With most teens and adolescents, there is a thin line between casual Internet use and addiction. The first cause make person is addicted to the Internet is the family’s management. From that, they have much time to spend to do something on the Internet.Initially, you only use Internet when you have spare time. Gradually, you spend more and more time on it. And you are addicted. Internet addiction brings a lot of bad effects. When you use too much time to use the Internet, you lost your valuable time to do other things. We can see that the first harm is waste of time. Every time when someone require you shut down or out internet you will say â€Å"just for minutes†, right? Second, it is bad influence on your health. If you use it for along time, day to day you will fatigue, your brain will be damaged.And your studying? Of course it will decline, too. It leads to damage your eyes, west your money, neglected education†¦ It terrible! And then, it is internet addiction that the risk of your health or education and more other thing being negatively impacted by internet addiction need to stop immediately. For those reasons, we have to have a using internet timetable reasonablely. Especially, we should go outside and do more something useful. When we attend outside activities, you will not enough time to online.

Freedom †Short Story from Tkam After Tom Robinson’s Trial Essay

As I sat outside watching the other inmates, a gentle breeze caressed my face, providing relief from the sun’s hot rays. I was used to the heat, but maybe it was the circumstances that I was in that made it unbearable. I could see that my fellow inmates felt the same as they lazed about, their skin glistening with sweat, their shirts clinging to their backs. ‘Guilty until proven innocent’ rang angrily in my mind when I saw the number of Negroes compared to white people incarcerated. The amount of court cases, as well as families, jobs and lives, lost due to our colour was innumerable. Half of us didn’t even commit a crime worth being sent to jail for, but here we are! I wiped my forehead with an already sticky hand and surveyed my surroundings in an effort to shake off the contemptuous thought. The dirt oval consisted of some simple worn out exercising equipment, their hinges squeaking in protest with very movement; a few withering trees dying in the midday heat, two lookouts sitting on the inside of the perimeter where the prison guards patrolled the prisoners and a barbed wire fence which enclosed the space in an ominous hug. I thought pensively about my situation as I kicked the dusty ground vehemently, scuffing my already torn prison boots in the process. The rising hopelessness that I had kept bottled up throughout the court case, believing that with Mr Finch on my side I would definitely be acquitted, quickly vanished, much like the specks of dirt that I had kicked up had disappeared, carried away with the breeze of reality. I observed the bluejays on the nearby trees, warbling their little hearts out with not a care in the world, unaware of the injustice that had occurred. I was being punished for a crime that I had not committed, accused by a woman whom I have assisted for nigh a year! The court case didn’t just affect me – it affected my family as well and I don’t want them to suffer because of it. What will they do? How will Helen watch the chillun’ and work? They don’t deserve this! My family needs me. It was already a struggle to bring food to the table everyday, and now with most of our income ripped away, I can’t bring myself to fantasise what my family would have to suffer. Would Helen have to starve to keep the chillun’ physically satisfied? I’ve prayed for them every night confined in the dungeon, praying that God would help them through this adversity. Ms Mayella obviously doesn’t realise that her decision to accuse me affects my family just as much as it affects me. She used the only ticket that would guarantee her victory over the court case, which would prove her innocent from the despicable crime that she had committed – her race. The inequity displayed towards Negroes always perplexed me. We came from the same ancestors, Adam and Eve, but somehow, white people were born having more rights than others, perceived as superior to others, more moral than others. I should’ve conceded that I was a black man living in a white man’s world, and no matter what I did to prove myself innocent, there would be no justice for me. I hate how all white people acrimoniously conclude that all Negroes lie, all Negroes are basically immoral beings and all Negroes aren’t to be trusted around women, as Mr Finch mentioned. How can people be so shallow, so malevolent and so blind? They’re living a lie! How dare America call themselves a democracy when they can’t even treat their own people equally, lowering our rights, our standards and our lives! The act of incarcerating all black people for almost everything that we do is a paradox to their self-proclaimed government. It is overdue to set things straight, but there is no better time than now to change the way Negroes are treated. I am not going to wait for someone else to take justice, as God knows when that is going to come. Justice is in my hands. The only possible way that I can achieve this is to run. They’re going to kill me nonetheless so I’m already a dead man walking, but I’m not dying knowing that I just sat there letting them persecute me while knowing that I did nothing to prevent this precedent from occurring again to other Negro families. I must run. I quickly rose from the bench which I was seated on and began jogging the perimeter of the oval, keen to find an escape route to freedom. I took a quick glance at the patrollers- they were watching us inattentively, their faces impassive and eyes glazed over, contenting themselves in their current daydreams. I scrutinized the fence for any weakness. There were several places where the fence sagged, but all seemed intact. I searched for other possible escape routes, my eyes slowly taking in every detail of the oval, but when failing to find any, I approached an oak tree to ponder over my next move, when flashbacks of my family and previous life overwhelmed me. There were many oak trees in my life – in my backyard, on the sidewalk, at work – but I never knew until now that they were so prominent in my life. There were oak trees that my children loved to climb on, loved to hide in, loved to have mini adventures in. There were oak trees that I watched from my kitchen window as their branches were softly tickled by the wind, which Helen used to sit under and pensively think about life’s uncertainties, which grew and thrived with my family. There were oak trees which provided me a job, which I spent countless hours climbing up and down laboriously picking acorns, which earned me money to support my family. My heart ached with sadness when I thought back to those wonderful memories, making me miss my family even more than I originally did. Helen would probably be working strenuously to support the children now without my help. What this event has put my family through is unthinkable. I can’t prevent what I am currently putting them through, but they must understand that if I do no try to get free I will be killed nonetheless. Everyone deserves to have equal rights, and I am going to be the person bringing justice. I am not going home after my jail sentence knowing that I did nothing to prevent further injustice from occurring to thousands of other Negroes. I want to be able to tell my chillun’ that I didn’t just sit there being persecuted, allowing other Negroes to be persecuted as well, as the pain that discrimination puts us through throughout our lives is unbearable. I want to be a role model for them; to be an example for fighting for what is right. Even though doing so may be dangerous and may lead to death, bringing justice to every race is worth losing a life for. In a sudden burst of adrenaline and surprising confidence I sprinted as fast as my legs could carry me to the barbed wire fence and began climbing. I almost leaped backwards in surprise as my bare skin came into contact with the burning metal that had been basking in the sun all day, but my mind was set on my goal, and so I ignored the acrid pain and scaled the fence. Consecutively, shouts of surprise and disbelief spread through the prisoners, and, as if my actions brought them back to life, the angry voices of the prison guards soon followed. Hollering warnings and portentous threats, the patrollers showed no evidence that a few seconds ago they were practically lifeless, but their efforts were wasted as it proved completely futile. With my prior experience climbing trees for Mr Deas, I quickly adapted to my situation and climbed, my hand and feet working simultaneously to make up for my deprivation. My eyes darted to elusive spaces between the barbs and my hand quickly followed suit, with my legs climbing after them. The barbs clung and sliced at my arms and clothes as the patrollers’ threats became more ominous, their cries climbing to a climatic forte, ineffective at impeding my pilgrimage. The word justice was repeated over and over in my mind, instilling a new hope in me, encouraging me to continue climbing. This failed when a gunshot shattered my tranquillity. A bolt of pure panic shot through me, causing my heart to thrash against my ribs as I realised the severity of my situation. I lost my footing, dangling in mid-air for a second, but immediately found another foothold and scaled the fence even faster than before. Seeing that the gunshot failed to stop me, several more shots were fired into the air, counterproductive as it only made me move twice as fast. ‘Quicker! Quicker! ’ my body seemed to holler at me, dissatisfied with the speed that I was travelling. My stomach started to twist with despair, my newfound hope abandoning me, slowly overtaken by doubt – then a bullet whistled past my ear inches from my face. My hand began shaking uncontrollably from pure fear. My lungs were screaming for air, the spikes were screaming for blood, but my scream for justice overpowered them all. More deathly bullets whistled past, when one successfully tore through my leg. An explosion of pain raked my leg, and immediately I felt warm blood gush out of my pulsing wound. I was almost over the fence though! Clenching my teeth, I reached between the razor wire. The screams and hollering of the prisoners were vociferous, but nothing mattered as the second bullet hit my crippled shoulder. It immediately burst into flames as I started sweating uncontrollably, the back of my shirt soaked with blood, clinging to me. In a last ditch effort, I hauled myself between the razor wire to the other side of the fence leading to freedom. A third bullet tore through my thigh, sending me rolling to the ground in a bloodied heap while other bullets whizzed past and wounded me. The shrill roar in my ears gradually ceased to a dull hum, and dizzying black splotches began crowding my vision. The last thought that left my mind was: Freedom.

Adhd Children With Adhd Essay - 1495 Words

I have a twelve-year-old son who over the past few years has exhibited signs of what one might diagnose as ADHD if he were examined at a particular point, in a particular classroom, with a particular teacher. In other situations, he is completely able to focus on his tasks and has no problem whatsoever with comprehension and understanding the material he is supposed to learn and in in fact mastering that material. He had an assessment known as an APP done in the second grade and it was determined that he was not a child with ADHD. It has been five years since the second grade and his evaluation and I have had certain teachers mention subsequently that he shows signs of ADHD. My son is now in middle school and has friends that have been diagnosed with ADHD at a â€Å"drop of a hat†. Seeing this, he now thinks that he has ADHD because he shares some of the same characteristics as some children who have been diagnosed with ADHD. I on the other hand believe there are other factors involved and firmly believe that ADHD is over-diagnosed and in fact believe that diet, mental state, and relationships can be a major influence on those children who present symptoms of ADHD. Throughout this paper I will try to answer the question â€Å"Do factors such as diet, psychological well being, and social environment affect children who present as having ADHD?† I will use the biopsychosocial approach to view the following: The biological ways to help cope with ADHD, the psychological ways to helpShow MoreRelatedChildren With Adhd ( Adhd )838 Words   |  4 Pages Children with ASD sometimes present aggressive behavior, self-injurious behavior and tantrums that impede their ability to learn in an educational environment (home school). Sometimes medicine is used in an effort to calm the child to the point where they are able to learn in an educational environment. 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