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Random Access Memory: Definition, Types and Working29 August 2020
Random Access Memory (RAM), also called main memory, is an internal memory that directly exchanges data with the CPU. It can read and write at any time (except when refreshing), and and is usually used as a temporary data storage medium for the operating system or other running programs. The biggest difference between it and ROM is the volatility of data, that is, the stored data of RAM will be lost once the power is off.
Introduction to TFT Displays29 August 2020
TFT Display is a thin film transistor type liquid crystal display. TFT liquid crystal is equipped with a semiconductor switch for each pixel, and each pixel can be directly controlled by dot pulses. So each node is relatively independent and can be continuously controlled, which not only improves the response speed of the display screen, but also allows precise control of displaying color gradation, so the color of TFT liquid crystal is truer.
Basic Introduction to Metal Film Resistor28 August 2020
Metal film resistors are a kind of film resistors. Metal film resistors are resistors in which special metals or alloys are used as resistor materials, and the resistor film layer is basically formed on ceramic or glass by vacuum evaporation or sputtering.
An Overview of Bipolar Transistors27 August 2020
Bipolar Transistor, full name bipolar junction transistor(BJT), is an electronic device with three terminals, made of three parts of semiconductors with different levels of doping. The charge flow in the transistor is mainly due to the diffusion and drift movement of carriers at the PN junction.
What is a Piezoelectric Sensor?26 August 2020
A piezoelectric sensor is a sensor based on the piezoelectric effect. It is a self-generating and electromechanical conversion sensor.
How does a Resettable Fuse Work?26 August 2020
A resettable fuse is a kind of over-current electronic protection component. It is made of a high-molecular organic polymer under high pressure, high temperature, and sulfidation reaction. It's mixed with conductive particle materials, and processed by special technology.
Tunnel Diode: Definition, Features and Tunneling Process25 August 2020
Tunnel diode, also known as Ezaki diode, is a crystal diode with tunnel effect current as the main current component. The tunnel diode is a semiconductor diode made of a mixture of gallium arsenide (GaAs) and gallium antimonide (GaSb).
Introduction to Wireless Sensor Networks20 August 2020
The component modules of the wireless sensor are encapsulated in a shell. When it is working, it will be powered by a battery or a vibration generator to form a wireless sensor network node. It consists of randomly distributed micro nodes integrated with sensors, data processing units, and communication modules. The way of self-organizing constitutes a network. The wireless sensor network system usually includes sensor nodes, sink nodes, and management nodes.
An Overview of JFET19 August 2020
JFET is a Junction field-effect transistor. Regular transistor is a current-controlled device that requires biasing power, while JFET is a voltage-controlled device. The JFET is an active electronic component that is one of the electronics industry's workhorses that offers a reasonable compromise between cost and efficiency.
Introduction to Microprocessors18 August 2020
The microprocessor is the central unit of a computer system performing arithmetic and logic operations which typically involve adding, subtracting, moving numbers from one field to another, and comparing two numbers. It's often simply referred to as a processor, a central processing unit, or a logic chip.
How does a Photodiode Work?15 August 2020
A photodiode is a special diode (light-receiving device) that converts optical signals into electrical signals.It has a pn junction, and its shell has a window with glass for light penetration.So how does it work and how do we use it? Read this article to find the answer.
What is a Memory Controller?12 August 2020
The memory controller is an important part of the computer system that controls the memory and is responsible for data exchange between the memory and the CPU. The memory controller determines the maximum memory capacity that the computer system can use, the number of memory banks, memory type and speed, memory particle data depth and data width, and other important parameters. The memory controller determines the memory performance of the computer system and therefore has a greater impact on the overall performance of the computer system.