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Logic Circuits (logic + circuit)
Selected AbstractsNanoscale Logic Circuits: Hybrid Complementary Logic Circuits of One-Dimensional Nanomaterials with Adjustment of Operation Voltage (Adv. Mater.ADVANCED MATERIALS, Issue 21 200921/2009) A new layout of complementary logic circuits based on p-channel carbon nanotube and n-channel zinc oxide nanowire transistors is presented by Takhee Lee and co-workers on p. 2156. The processing is a hybrid approach, combining advantageous characteristic functions for the modulation of the current and operating voltage in transistors through proton radiation-generated charges, allowing a simple method of designing favorable logic circuits. [source] Hybrid Complementary Logic Circuits of One-Dimensional Nanomaterials with Adjustment of Operation VoltageADVANCED MATERIALS, Issue 21 2009Gunho Jo A new layout of complementary logic circuits based on p-channel carbon nanotube and n-channel zinc oxide nanowire transistors is presented, providing a hybrid approach to combine advantageous characteristic functions for the modulation of the current and operating voltage in transistors through proton radiation-generated charges, which allow a simple way to design favorable logic circuits. [source] Electrically Addressable Multistate Volatile Memory with Flip-Flop and Flip-Flap-Flop Logic Circuits on a Solid Support,ANGEWANDTE CHEMIE, Issue 28 2010Graham de, Ruiter Flip-Flops: Auf der Grundlage elektrisch ansprechbarer Os2+ -basierter Mehrfachschichten wurde ein mehrwertiger Arbeitsspeicher verwirklicht. Die kontrollierbaren optischen Eigenschaften der Mehrfachschichten ermöglichen den Aufbau von Speichereinheiten, die abhängig von der elektrischen Eingabe bis zu fünf verschiedene Zustände speichern können (siehe Bild). Die Speicheroperationen können durch sequenzielle, zu Flip-Flop-und Flip-Flap-Flop-Funktionseinheiten äquivalente Logikschaltkreise dargestellt werden. [source] Learning computer architecture concepts with the FPGA-based "Move" microprocessorCOMPUTER APPLICATIONS IN ENGINEERING EDUCATION, Issue 2 2006Veselko Gu Abstract In this article we introduce the use of a programmable logic device (PLD) in an application-oriented study as an example of designing a microprocessor based on reduced instruction set computer (RISC) architecture. Since the concept of an in-system configurable logic circuit is becoming increasingly popular, we now use it for the purpose of logic design. We suggest that students use PLDs when constructing a central processing unit (CPU) with their own configured functions that are directly implemented in the logic. Such an approach could greatly increase the understanding of the architectural concept of the CPU. © 2006 Wiley Periodicals, Inc. Comput Appl Eng Educ 14: 135,141, 2006; Published online in Wiley InterScience (www.interscience.wiley.com); DOI 10.1002/cae.20072 [source] Designing the microprocessor with Abel-HDLCOMPUTER APPLICATIONS IN ENGINEERING EDUCATION, Issue 2 2001Veselko Gu Abstract In this article we introduce the use of the programmable logic circuit in students' work as an example of configuring the CPU (central processing unit). Since the concept of an in-system configurable logic circuit is becoming increasingly popular, we now use it for the purpose of logic design. We suggest to students that they use programmable logic, as in constructing the CPU, with their own designed functions that are directly implemented in logic. Such an approach could greatly increase the understanding of the architectural concept of the CPU. © 2001 John Wiley & Sons, Inc. Comput Appl Eng Educ 9: 87,92, 2001 [source] A Bifunctional Chromogenic Calix[4]arene Chemosensor for Both Cations and Anions: A Potential Ca2+ and F, Switched INHIBIT Logic Gate with a YES Logic FunctionEUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Issue 24 2010Kai-Chi Chang Abstract A bifunctional chromogenic calix[4]arene 3, which contains both triazoles and hydroxy azophenols as both cationic and anionic recognition sites and the azophenol moiety as a coloration unit, was designed and synthesized. The recognition of Ca2+ by 3 gave rise to a marked colour change from greenish to bright yellow, whereas the recognition of F, by 3 showed a colour change from light green to bluish. The colour changes of 3 by the inputs of Ca2+ and F, have been implemented to construct a combinational logic circuit at the molecular level. [source] The training effects of principle knowledge on fault diagnosis performanceHUMAN FACTORS AND ERGONOMICS IN MANUFACTURING & SERVICE INDUSTRIES, Issue 3 2007Dong-Han Ham In regard to the effectiveness of types of knowledge on fault diagnosis performance, many experimental studies showed that training with procedural knowledge (diagnostic rules) is very effective to enhance diagnosis performance. But the effects of training with principle knowledge (theoretical knowledge) have been controversial. Some studies went so far as to claim that principle knowledge is not useful for diagnosis. However, common experience suggests that understanding the principles of system dynamics is valuable in certain diagnostic situations. In this study, we conducted an experiment to investigate the value of principle knowledge in various fault situations. A context-free digital logic circuit including 41 gates of three basic types was simulated for the subjects to diagnose. The experimental results showed that instructing principle knowledge has positive effects that are dependent on the complexity of diagnostic problems. The observations also provide insights on how fault diagnosis benefits from principle knowledge. © 2007 Wiley Periodicals, Inc. Hum Factors Man 17: 263,282, 2007. [source] Fabrication and evaluation of complementary logic circuits using zinc oxide and pentacene thin film transistorELECTRONICS & COMMUNICATIONS IN JAPAN, Issue 9 2009Hiroyuki Iechi Abstract We fabricated hybrid complementary inverters with n-channel zinc oxide (ZnO) transistors as the n-type inorganic material and p-channel organic transistors using pentacene as the p-type organic material. The complementary inverter exhibited a large voltage gain of 10 to 12 and a cutoff frequency of 0.5 kHz. ZnO thin film transistors show n-type semiconducting properties having field-effect mobility of 2.1×10,3 cm2/Vs. On the other hand, pentacene thin film transistors show p-type semiconducting properties having field-effect mobility of 3.2×10,2 cm2/Vs. We describe basic charge transfer characteristics of ZnO thin films. The results obtained here demonstrate that it is important for the transistor using ZnO to be injected charge from electrode to semiconducting material effectively. © 2009 Wiley Periodicals, Inc. Electron Comm Jpn, 92(9): 36,42, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecj.10085 [source] Nanoscale Single-Crystal Circuits: Assembly of Nanoscale Organic Single-Crystal Cross-Wire Circuits (Adv. Mater.ADVANCED MATERIALS, Issue 42 200942/2009) Organic single-crystal circuits with versatile functions, such as inverters, NOR, and NAND gate, can be assembled by nanomechanical manipulation of nanowires of CuPc, F16CuPc and SnO2:Sb, report Thomas Bjornholm, Wenping Hu, and co-workers on p. 4234. The circuits show ultralow power consumption (40 pW per logic gate) and high voltage gain. In combination with generic "bottom-up" assembly methods developed for nanowires, this opens new opportunities in organic nanoelectronics and for highly sophisiticated integrated logic circuits [source] Nanoscale Logic Circuits: Hybrid Complementary Logic Circuits of One-Dimensional Nanomaterials with Adjustment of Operation Voltage (Adv. Mater.ADVANCED MATERIALS, Issue 21 200921/2009) A new layout of complementary logic circuits based on p-channel carbon nanotube and n-channel zinc oxide nanowire transistors is presented by Takhee Lee and co-workers on p. 2156. The processing is a hybrid approach, combining advantageous characteristic functions for the modulation of the current and operating voltage in transistors through proton radiation-generated charges, allowing a simple method of designing favorable logic circuits. [source] Hybrid Complementary Logic Circuits of One-Dimensional Nanomaterials with Adjustment of Operation VoltageADVANCED MATERIALS, Issue 21 2009Gunho Jo A new layout of complementary logic circuits based on p-channel carbon nanotube and n-channel zinc oxide nanowire transistors is presented, providing a hybrid approach to combine advantageous characteristic functions for the modulation of the current and operating voltage in transistors through proton radiation-generated charges, which allow a simple way to design favorable logic circuits. [source] Study of metal-oxide-semiconductor capacitors with r.f. magnetron sputtering TiOxNy films dielectric layerPHYSICA STATUS SOLIDI (C) - CURRENT TOPICS IN SOLID STATE PHYSICS, Issue 3-4 2010Katia Franklin Albertin Abstract A set of MOS capacitors with TiOxNy films as gate dielectric layer was fabricated and characterized. The TiOxNy films were deposited by reactive r.f. magnetron sputtering varying the nitrogen and oxygen partial pressure in a Ar/N2/O2 gaseous mixture. The TiOxNy films were characterized by, Rutherford Backscattering (RBS), X-ray absorption near edge spectroscopy (XANES) in oxygen K-edge (O-K), optical absorption and High Resolution Transmission Electron Microscopy (HRTEM). Capacitance-voltage (1MHz) and current-voltage measurements were performed to obtain the effective dielectric constant, the effective oxide thickness (EOT), the leakage current density, and the interface quality. MOS capacitors results show that the TiOxNyfilms dielectric constant varies from 28 to 80, present a good interface quality with silicon, and the leakage current density values are in the order of 0.25 mA/cm2 for VG = ,2V, which is acceptable for high performance logic circuits and low power circuits fabrication. The leakage current density is reduced in 2 orders of magnitude for increasing nitrogen concentration (© 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [source] | |||||||||||||