EE 201 : Digital Circuits and Microprocessors Dr. Amit Sethi Room 303‚ EEE Dept. 2529‚ amitsethi Objectives for this session Introduce the 8085 Microprocessor Introduction to 8085 programming model Introduction to 8085 instruction set All computers are based on the Turing Machine concept • In 1937‚ Alan Turing described this abstract idea of a computer • Turing Machines consist of: – A tape of infinite length with symbols printed in cells – A read-write head that can move along
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The history of the microprocessor begins with the birth of the Intel 4004‚ the first commercially available microprocessor. The roots of this development can be traced directly back to the inventors of the transistor. In 1955‚ William Shockley founded Shockley Semiconductor in Palo Alto‚ California (arguably the birth of Silicon Valley). This company eventually employed Gordon Moore and Robert Noyce‚ who left with others to form Fairchild Semiconductor in 1957. While at Fairchild‚ Noyce played a
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Evolution of Microprocessor It is interesting to note that the microprocessor had existed for only 10 years prior to the creation of the PC! Intel invented the microprocessor in 1971; the PC was created by IBM in 1981. Now more than 20 years later‚ we are still using systems based more or less on the design of that first PC. The processors powering our PCs today are still backward compatible in many ways with the 8088 that IBM selected for the first PC in 1981. November 15‚ 2001 marked the 30th anniversary
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the cell phones in your pocket. Even things like your car‚ dishwasher‚ dvd player‚ and even TVs include some form of computers. All this would not be possible without the invention of the integrated circuit or IC. This led to the creation of the Microprocessor or CPU (central processing unit) which acts as the brain of the computer. To better help illustrate the function and need for a CPU you must go back to the first all electric computers. Now computers have a long history but modern electronic
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now be placed on area of 1cm3. This had enormous consequences for the design and development of computers‚ CD players‚ internet‚ mobile phones‚ cable TV‚ robots‚ military technology and medical diagnosis & treatment. The use of transistors in microprocessors and microchips (thousands of transistors may be on this chip) made possible a continuous decline in real price of computers and a continuous increase in processing power. Computers are now used in many different professions such as law‚ engineering
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UNIT II- Peripherals and Interfacing PIO 8255 The parallel input-output port chip 8255 is also called as programmable peripheral input-output port. The Intel’s 8255 is designed for use with Intel’s 8-bit‚ 16-bit and higher capability microprocessors. It has 24 input/output lines which may be individually programmed in two groups of twelve lines each‚ or three groups of eight lines. The two groups of I/O pins are named as Group A and Group B. Each of these two groups contains a subgroup of eight
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Foucault. His work is central to many of the Humanities and social science parts of life. He came up with idea that people govern themselves‚ and his Panopticism essay revolves basically around this central idea. There are many panoptic examples in society today that have both positive and negative connotation. Generally I believe the panoptic theory is associated with negative experiences. The panoptic idea was started by Jeremy Betham‚ who is a famous architect that created original panopticon. This
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Women in today’s society are constantly being bombarded by media in one form or another. It could take the form of a fashion magazine‚ a favourite blog‚ a TV commercial or a myriad of other sources. Pretend for a moment you’re waiting in line at the grocery store‚ bored you hazard a glance over to the magazine rack and what do you see? A plethora of magazines‚ most covers adorned by thin‚ happy models. Many women see these models as the pinnacle of health and beauty‚ often feeling inadequate in comparison
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Computer and society today The Computer revolution is the most important revolution in the world history. Microelectronics has been the driving force behind this unbelievable technological leap. We live in a computerized society and whether we like it or not‚ it is going to get more and more computerized. The major reason behind such an impact of computers is that computers are becoming smaller‚ cheaper‚ faster and more reliable. They are an indispensable way of life. A country without the
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the United States till this day. Although some may argue that it “may not be a big deal and it isn’t as bad.” Either way their are still flashes of racism going on that needs to come to an abrupt end. One main example of racism that I see in society today is stereotyping. Stereotyping comes from what people here and see on tv‚ or what the news is showing them abour a certain race or ethnicity. African Americans seem to be the ones who get hit the hardest when it comes to stereotyping. Some examples
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