Diode Logic Gates

figure of xor and xnor logic gates using diodes only?

I don't think it is possible without transistors

http://en.wikipedia.org/wiki/Diode_logic

Logic Gate $103.56 A logic gate performs a logical operation on one or more logic inputs and produces a single logic output. The logic normally performed is Boolean logic and is most commonly found in digital circuits. Logic gates are primarily implemented electronically using diodes or transistors, but can also be constructed using electromagnetic relays, fluidics, optics, molecules, or even mechanical elements. In electronic logic, a logic level is represented by a voltage or current, (which depends on the type of electronic logic in use). Each logic gate requires power so that it can source and sink currents to achieve the correct output voltage. In logic circuit diagrams the power is not shown, but in a full electronic schematic, power connections are required. Author: Miller, Frederic P./ Vandome, Agnes F./ McBrewster, John Binding Type: Paperback Number of Pages: 140 Publication Date: 2009/12/28 Language: English Dimensions: 5.98 x 9.01 x 0.32 inches

Nor Logic $70.1 High Quality Content by WIKIPEDIA articles Like NAND gates, NOR gates are socalled universal gates that can be combined to form any other kind of logic gate. For example, the first embedded system, Apollo Guidance Computer, was built exclusively from NOR gates, about 5,600 in total for the later versions. Today, contrary to popular belief, integrated circuits are not constructed exclusively from a single type of gate. Instead, EDA tools are used to convert the description of a logical circuit to a netlist of complex gates (standard cells) or transistors (full custom approach). Author: Surhone, Lambert M./ Tennoe, Mariam T./ Henssonow, Susan F. Binding Type: Paperback Number of Pages: 76 Publication Date: 2010/09/04 Language: English Dimensions: 9.02 x 5.98 x 0.18 inches

Hazard (Logic) $71.7 High Quality Content by WIKIPEDIA articles In digital logic, a hazard in a system is an undesirable effect caused by either a deficiency in the system or external influences. Logic hazards are manifestations of a problem in which changes in the input variables do not change the output correctly due to some form of delay caused by logic elements (NOT, AND, OR gates, etc.) This results in the logic not performing its function properly. The three different most common kinds of hazards are usually referred to as static, dynamic and function hazards. Author: Surhone, Lambert M./ Timpledon, Miriam T./ Marseken, Susan F. Binding Type: Paperback Number of Pages: 98 Publication Date: 2010/08/11 Language: English Dimensions: 6.00 x 9.02 x 0.23 inches

Introduction to Logic $30 With clear explanations and many contemporary examples drawn from popular culture and everyday life, author Paul Herrick untangles the complexities of logical theory in Introduction to Logic. Offering a unique combination of two approaches—the historical and the technical—he presents logic as both a fascinating, evolving story and a body of essential technical information with applications to every area of human thought. Perfectly suited for use in any introductory logic course, Introduction to Logic is also tailored to the online logic course Philosophy 106, available as part of the Open Course Library at www.opencourselibrary.org. Jointly sponsored by the Washington State Board for Community and Technical Colleges and the Bill & Melinda Gates Foundation, the Open Course Library offers instructors complete, expertly developed online courses in eighty essential college subjects—including the logic class developed by Paul Herrick and his colleague Mark Storey—all available to faculty at no charge.SUPPLEMENTS:* An Instructor’s Resource CD (978-0-19-989052-1) contains brief chapter summaries, answers to all of the questions in the text, additional questions and exercises to use on quizzes and exams, and a PowerPoint presentation that covers the entire book.* A Companion Website at www.oup.com/us/herrick provides extra resources for teachers and students, including a Teacher’s Manual, Student Manual, and practice quizzes with answers on all key topics.* An additional online resource at www.manyworldsoflogic.com offers additional practice quizzes, material for extra-credit assignments, and further information on the nature and history of logic. The text is also available as a CourseSmart Ebook (978-0-19-989050-7) at www.coursesmart.com. Please contact your Oxford University Press Sales Representative at 800.280.0280 for more information.

Pass Transistor Logic $65.33 Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In electronics, pass transistor logic (PTL) describes several logic families used in the design of integrated circuits. It reduces the count of transistors used to make different logic gates, by eliminating redundant transistors. Transistors are used as switches to pass logic levels between nodes of a circuit, instead of as switches connected directly to supply voltages . This reduces the number of active devices, but has the disadvantage that output levels can be no higher than the input level. Each transistor in series has a lower voltage at its output than at its input. If several devices are chained in series in a logic path, a conventionallyconstructed gate may be required to restore the signal voltage to the full value. By contrast, conventional CMOS logic always switches transistors to the power supply rails, so logic voltage levels in a sequential chain do not decrease. Since there is less isolation between input signals and outputs, designers must take care to assess the effects of unintentional paths within the circuit. Author: Surhone, Lambert M./ Tennoe, Mariam T./ Henssonow, Susan F. Binding Type: Paperback Number of Pages: 18 Publication Date: 2011/03/30 Language: English Dimensions: 9.02 x 5.98 x 0.04 inches

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Introduction to Logic (Paperback) $119.68 With clear explanations and many contemporary examples drawn from popular culture and everyday life, author Paul Herrick untangles the complexities of logical theory in Introduction to Logic. Offering a unique combination of two approaches--the historical and the technical--he presents logic as both a fascinating, evolving story and a body of essential technical information with applications to every area of human thought.Perfectly suited for use in any introductory logic course, Introduction to Logic is also tailored to the online logic course Philosophy 106, available as part of the Open Course Library at www.opencourselibrary.org. Jointly sponsored by the Washington State Board for Community and Technical Colleges and the Bill & Melinda Gates Foundation, the Open Course Library offers instructors complete, expertly developed online courses in eighty essential college subjects--including the logic class developed by Paul Herrick and his colleague Mark Storey--all available to faculty at no charge.SUPPLEMENTS:* An Instructor`s Resource CD (978-0-19-989052-1) contains brief chapter summaries, answers to all of the questions in the text, additional questions and exercises to use on quizzes and exams, and a PowerPoint presentation that covers the entire book.* A Companion Website at www.oup.com/us/herrick provides extra resources for teachers and students, including a Teacher`s Manual, Student Manual, and practice quizzes with answers on all key topics.* An additional online resource at www.manyworldsoflogic.com offers additional practice quizzes, material for extra-credit assignments, and further information on the nature and history of logic.The text is also available as a CourseSmart Ebook (978-0-19-989050-7) at www.coursesmart.com. Please contact your Oxford University Press Sales Representative

DIODE $12 When these electrical items fail there is little choice but to renew - With this genuine Suzuki par..

Logic Synthesis for Control Automata $465.21 Logic Synthesis for Control Automata provides techniques for logic design of very complex control units with hardly any constraints on their size, i.e. the number of inputs, outputs and states. These techniques cover all stages of control unit design, including: description of control unit behavior by using operator schemes of algorithms (binary decision trees) and various transformations of these descriptions composition, decomposition, minimization, etc.; synthesis of a control automaton (finitestate machine); synthesis of an automaton logic circuit: with matrix structure as a part of LSI or VLSI circuits; as multilevel circuit with logic gates; with standard LSI and VLSI circuits with and without memory. Each chapter contains many examples, illustrating the use of the models and methods described. Moreover, the special last chapter demonstrates in detail the whole design methodology presented in the previous chapters, through the examples of the logic design for a control unit. The models, methods and algorithms described in the book can be applied to a broad class of digital system design problems including design of complex controllers, robots, control units of computers and for designing CAD systems of VLSI circuits using FPGA, PLD and SIC technologies. Logic Synthesis for Control Automata is a valuable reference for graduate students, researchers and engineers involved in the design of very complex controllers, VLSI circuits and CAD systems. The inclusion of many examples and problems makes it most suitable for a course on the subject. Author: Baranov, Samaray/ Baranov, S. I. Binding Type: Hardcover Number of Pages: 412 Publication Date: 1994/06/30 Language: English Dimensions: 9.68 x 6.36 x 1.16 inches

Fundamentals of Logic Design (with Companion CD-ROM) $102.49 Updated with modern coverage, a streamlined presentation, and an excellent companion CD, this sixth edition achieves yet again an unmatched balance between theory and application. Authors Charles H. Roth, Jr. and Larry L. Kinney carefully present the theory that is necessary for understanding the fundamental concepts of logic design while not overwhelming students with the mathematics of switching theory. Divided into 20 easy-to-grasp study units, the book covers such fundamental concepts as Boolean algebra, logic gates design, flip-flops, and state machines. By combining flip-flops with networks of logic gates, students will learn to design counters, adders, sequence detectors, and simple digital systems. After covering the basics, this text presents modern design techniques using programmable logic devices and the VHDL hardware description language.

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Logic Gates: The NOT Gate

how many diodes be used to constract electronic AND and OR logic gates?

why are such logic gates not used in practice?

Not sure how many. Logic gates are used in practice just not on their own anymore. There a re millions of logic gates inside the computer you are using.