Self Study World

Demultiplexer A demultiplexer (or "demux" for short) is a digital circuit that selects one of several inputs and directs it to a single output. The selection of the input to be directed to the output is determined by the value of one or more "select" inputs. The demultiplexer has 2^n input lines and n select lines, where n is the number of select lines. The output will be the input line that corresponds to the binary value of the select lines. It is the inverse operation of a multiplexer (mux). Demultiplexer applications 1. Communication System Multiplexers and Demultiplexers both are used in communication systems to carry out the process of data transmission. A De-multiplèxer receives the output signals from the multiplexer; and, at the receiver end, it converts them back to the original form.  2. Arithmetic Logic Unit The output of the arithmetic logic unit is fed as an input to the De-multiplexer, and the demultiplexer is connected to multiple registers. The outp

Terzaghi Theory Terzaghi theory is a fundamental concept in soil mechanics, which was developed by Karl Terzaghi in the 1920s. It describes the behavior of soil as a two-phase system consisting of solid particles and pore fluid and explains how the stresses and strains in soil are related to one another. The theory is based on the principles of effective stress and total stress and is used to analyze the stability and settlement of foundations, slopes, and other soil structures. Terzaghi's work laid the foundation for modern soil mechanics and geotechnical engineering. Terzaghi's theory also includes the concept of soil compressibility, which describes how soil changes volume in response to changes in stress. According to the theory, the soil will compress and lose volume when subjected to an increase in stress and will expand and gain volume when stress is reduced. This behavior is known as compression and rebound and is important in the design of foundations and other structu

What is Airsoft MOSFET Airsoft is a popular hobby and sport that involves replica firearms that shoot small plastic pellets. These replica firearms, also known as airsoft guns, are powered by electric motors and use batteries to supply the power. However, as with any electrical device, there are limitations to the amount of power that can be safely supplied to the gun. This is where Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) comes in. A MOSFET is a type of transistor that is commonly used in electronic devices to control the flow of electrical current. In airsoft guns, a MOSFET is used to regulate the amount of power that is supplied to the electric motor. This helps to prevent damage to the gun and prolongs the life of the battery. One of the main benefits of using a MOSFET in an airsoft gun is that it allows for a higher rate of fire (ROF). The MOSFET can supply more power to the electric motor, which in turn allows the gun to shoot pellets at a faster rate. This can

Ratioed Logic Circuits Inverter In the world of digital electronics, the inverter is one of the most basic and essential building blocks. It is a one-input, one-output circuit that simply inverts the logic level of its input signal. In other words, if the input is high (1), the output is low (0), and vice versa. This simple yet powerful function is used in a wide variety of applications, from simple digital gates to complex microprocessors. In recent years, there has been a growing interest in ratioed logic circuits, which are a variation of traditional digital circuits that use a different method of signalling. In a ratioed logic circuit, the voltage levels of the signals are not fixed but rather are proportional to the supply voltage. This means that the logic levels of the input and output signals are not defined by a fixed voltage threshold, but rather by the ratio of the input voltage to the supply voltage. The ratioed logic inverter is a type of inverter that uses ratioed logic t

Rajasthan Home Guards Recruitment 2023 The Rajasthan Home Guards Recruitment 2023 is an upcoming recruitment drive for the selection of suitable candidates to fill various posts in the Rajasthan Home Guard department. The recruitment process is expected to begin in the year 2023 and will be conducted by the Rajasthan Police Recruitment Board. The recruitment will be open to eligible candidates who meet the required qualifications and other criteria set by the board. The Rajasthan Home Guard department is responsible for maintaining law and order in the state, assisting the police in times of emergency and disaster management, and providing security to important government buildings and events. The recruitment will be open for various posts such as Home Guard, Cook, Driver, etc. Total 3842 Post Urban Home Guard - 3545 Border Home Guard - 297 Important Dates Application Begin: 12/01/2023 Last Date for Apply Online: 11/02/2023 Pay Exam Fee Last Date: 11/02/2023 Exam Date: As Per the Sched

Light Emitting Diode A light-emitting diode (LED) is a diode that emits light when a current passes through it in the forward direction. It is a very useful display device. LEDs are available which emit light in different colors like red, green, and yellow. orange and white. Light Emitting Diode Diagram A Light Emitting Diode (LED) is typically made of semiconductor material, such as gallium arsenide or gallium phosphide. The typical structure of an LED is shown in the diagram below: The LED is composed of a P-type semiconductor and an N-type semiconductor, which are brought into contact to form a P-N junction. When a voltage is applied across the P-N junction, electrons from the N-type semiconductor flow into the P-type semiconductor, and holes (absences of electrons) from the P-type semiconductor flow into the N-type semiconductor. This flow of electrons and holes across the P-N junction causes a process called recombination, where electrons combine with holes and release energy in t

System Development Life Cycle The System Development Life Cycle (SDLC) is a process used to develop and maintain software and IT systems. It is a framework that defines the phases and activities involved in creating, deploying, and maintaining a system. The SDLC is used to ensure that a system is developed and deployed in a structured, efficient, and cost-effective manner. The SDLC has several phases, each with its own set of objectives and deliverables. The phases are typically divided into the following categories: planning, analysis, design, development, testing, deployment, and maintenance. The planning phase is the first phase of the SDLC. During this phase, the objectives and requirements of the system are defined and a project plan is created. This phase also includes a feasibility study to determine if the proposed system is viable and cost-effective. The analysis phase is the second phase of the SDLC. During this phase, the system requirements are gathered and analyzed. This p