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Related Concept Videos

Group Polarization01:01

Group Polarization

Group polarization is the strengthening of an original group attitude following the discussion of views within a group (Teger & Pruitt, 1967). That is, if a group initially favors a viewpoint, after discussion the group consensus is likely a stronger endorsement of the viewpoint. Conversely, if the group was initially opposed to a viewpoint, group discussion would likely lead to stronger opposition.
Multi-input and Multi-variable systems01:22

Multi-input and Multi-variable systems

Cruise control systems in cars are designed as multi-input systems to maintain a driver's desired speed while compensating for external disturbances such as changes in terrain. The block diagram for a cruise control system typically includes two main inputs: the desired speed set by the driver and any external disturbances, such as the incline of the road. By adjusting the engine throttle, the system maintains the vehicle's speed as close to the desired value as possible.
In the absence of...
Synthetic Disvision of Polynomials01:28

Synthetic Disvision of Polynomials

Synthetic division is an efficient algorithmic approach for dividing a polynomial by a linear binomial of the form x - c, where c is a real number. This method is helpful due to its streamlined process, which avoids the more cumbersome steps involved in the traditional long division of polynomials. It simplifies computation and serves as a practical tool for evaluating polynomials and identifying their factors.To perform synthetic division, one begins by listing the coefficients of the...
LC Circuits01:21

LC Circuits

An LC circuit consists of an inductor and a capacitor, either in series or parallel. Consider a charged capacitor connected with an inductor in series. Before the switch is closed, all the energy of the circuit is stored in the electric field of the capacitor. When the switch is closed, the capacitor begins to discharge, producing a current in the circuit. The current, in turn, creates a magnetic field in the inductor. Because of the induced emf in the inductor, the current cannot change...
Generation of Three-Phase Voltage01:21

Generation of Three-Phase Voltage

A three-phase AC generator has a rotor with a rotating magnet placed within the stator mounted with the stationary three-phase winding to generate three-phase voltages via mutual induction. These windings are evenly distributed around the inner circumference of the stator and are arranged 120 electrical degrees apart. Three-phase stator windings consist of three separate coils or groups of coils, known as phases, each connected in Y (star) configuration or Delta configuration.
As the rotor...
Design Example: Capacitance Multiplier Circuit01:20

Design Example: Capacitance Multiplier Circuit

In integrated circuit technology, a capacitance multiplier is often utilized to produce a larger capacitance value when a small physical capacitance falls short. This is achieved by a circuit that multiplies capacitance values by a factor of up to 1000, such that a 10-pF capacitor can replicate the performance of a 100-nF capacitor.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.

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Related Experiment Video

Updated: Jun 12, 2026

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
07:56

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

Polarization-encoded optical shadow-casting programmable logic array: simultaneous generation of multiple outputs.

A A Awwal, M A Karim

    Applied Optics
    |June 5, 2010
    PubMed
    Summary
    This summary is machine-generated.

    A novel content-addressable memory (CAM) design uses polarization-encoded optical shadow-casting (POSC) for efficient truth table storage. This method reduces memory requirements and enables simultaneous output generation in optical computing systems.

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    Published on: January 28, 2019

    Area of Science:

    • Optoelectronics
    • Computer Architecture
    • Digital Logic Design

    Background:

    • Content-addressable memory (CAM) is crucial for high-speed searching and pattern matching.
    • Traditional CAM designs face challenges in memory storage efficiency and parallel processing.
    • Optical computing offers potential for faster and more compact memory solutions.

    Purpose of the Study:

    • To propose a new design scheme for content-addressable memory (CAM).
    • To leverage polarization-encoded optical shadow-casting (POSC) for efficient CAM implementation.
    • To demonstrate reduced memory storage and simultaneous output generation.

    Main Methods:

    • A design scheme for CAM using polarization-encoded optical shadow-casting (POSC) is presented.
    • The method involves direct copying of truth table entries into input pixel subcells.
    • A 4-input, 4-output 2x2 binary multiplication unit is designed as an illustrative example.

    Main Results:

    • The proposed POSC CAM design significantly reduces memory storage requirements.
    • Built-in reduction of truth table entries enhances efficiency.
    • Simultaneous generation of all outputs is achieved, eliminating the need for switching LED sources or decoding masks.

    Conclusions:

    • The POSC-based CAM scheme offers an efficient approach to designing programmable logic arrays.
    • This optical method simplifies CAM design by integrating truth table data directly.
    • The design is suitable for applications requiring fast parallel processing and reduced hardware complexity.