The term Hardware Security Module (HSM) refers to an internal or external peripheral device for the efficient and secure execution of cryptographic operations or applications for sensitive data. This makes it possible, for example, to ensure the trustworthiness and integrity of data and the associated information in business-critical IT systems. In order to ensure trustworthiness, it may be … [Read more...]
Archives for September 2023
Transducer Technologies of Headphones
In the case of headphones, as in the case of other speakers, there are also various systems of sound conversion. Electromagnetic The design principle dates back to the early days of audio technology and was used for both loudspeakers and headphones. Typically, a steel diaphragm is moved, which radiates the sound directly. The current from the amplifier flows through two coils … [Read more...]
What is Analog-to-Digital Converter (ADC)
An analog-to-digital converter is an electronic device, component, or part of a device for converting analog input signals into a digital data stream, which can then be further processed or stored. A variety of conversion processes are in use. The counterpart is the digital-to-analog converter (DAC). Analog-to-digital converters are elementary components of almost all devices of modern … [Read more...]
Comparison of Tube Amplifiers and Semiconductors
A tube amplifier is an electronic amplifier in which electron tubes are used to amplify low-frequency electrical signals. With the advent of semiconductor electronics, tube amplifiers in the field of application as audio amplifiers were largely replaced by amplifier circuits with semiconductor components (transistors). However, electron tubes are still used today in guitar amplifiers as well as … [Read more...]
What is a Digital-to-Analog Converter (DAC)
A digital-to-analog converter (DAC) is an electronic component whose function is to transform a digital value (encoded on several bits) into an analog value proportional to the encoded digital value. A digital-to-analog converter is an elementary components of almost all devices of digital consumer electronics (e.g. music players) and communication technology (e.g. smartphones). Typically, the DAC … [Read more...]
Tips on S Pen Air Actions
The S Pen which comes with Samsung Galaxy7 S22 Ultra, and S23 Ultra is super powerful. Unfortunately, Samsung has no extensive guide on using S Pen. Most of the users think that it is a dumb style and probably rarely do web searches to find usage tips. With the S Pen and ESP32, you can control the lights and smart devices in your house with Air Actions. We are coming to that part at the end of … [Read more...]
Market Segmentation in Brief
In business administration and marketing, market segmentation is the division of a market into market segments according to certain criteria as well as the market cultivation of these market segments. Market segmentation is a sub-area of segmentation in microeconomics. Its purpose is to offer the right products or services to the right customers. Therefore, the market segmentation is carried out … [Read more...]
What is Booting?
Booting refers to the loading of the operating system of a computer, as it is usually required after powering up. The word booting is a short form of bootstrap loading. The phrase originated in 1950s. In computer science, bootstrapping refers to a process that activates a more complex system on a simple system. It is a solution to the chicken-and-egg problem of starting a system by itself. The … [Read more...]
What is ncurses?
ncurses (New curses) is a free library providing an API for the development of user interfaces with drop-down menus, using the characters and colors of a semi-graphical mode. Not only is this type of user interface designed independently of the terminal, but it speeds up screen refresh, thereby reducing the latency typically experienced by remote shell users (Read Text User Interface, TUI). We … [Read more...]
What is JTAG in Electronics?
Electronic circuits and devices are getting smaller and exponentially more complex. When they were large, they can be tested them with test probes on the bottom of the board. There were issues with such method but still it was a way. Today, components are mounted on both sides of a circuit board, hence no place of attachment are left for the test equipment. Joint Test Action Group (JTAG) is a … [Read more...]
iPhone 15 Pro Max Vs Samsung Galaxy S22/S23 Ultra
Apple has launched the iPhone 15 Pro and iPhone 15 Pro Max. These devices claimed to have loaded with game-changing features, including an Action Button, a 48MP camera, the A17 Pro Bionic chip and a Type-C port. Samsung S22/S23 Ultra owners may want to know whether these models from Apple made their smartphones outdated. This article is not a systemic review. Samsung S22 Ultra and S23 Ultra are of … [Read more...]