A simple buzzer can be connected to the ESP32 controller for producing sound. It can also be used to produce melodies. In this article, using two different examples, the C code is used on Arduino to make the buzzer play the melody. In the first example, “Twinkle Twinkle Little Star”, the poem’s notes are played and in the second example, another famous poem “Jingle Bell” is used for playing the note while making two colored LEDs on and off to create a light show with music. Example 1: Playing the poem notes using buzzer and ESP32 The circuit is made ... Read More

The technological revolution has caused computers to literally evolve. It would appear that computers have taken over every aspect of our lives. There have been other non-economic factors in the past that have contributed to the computer's rise to prominence. While the primary function of early computers was calculation, this is now the least essential function of modern computers. Electronic digital computers were first developed for the sole purpose of solving equations. In order to get more done in less time, humans drove the development of computers. As the IT industry is concerned about the rise of mobile devices like ... Read More

Introduction A dependable internet connection is crucial in today's digital environment for both business and entertainment. Nevertheless, have you ever thought about the businesses who provide the internet to your door? Enter the Internet Service Provider (ISP) hierarchy – a fascinating network of players working behind the scenes to keep us connected. What is an Internet Service Provider (ISP)? What exactly is an Internet Service Provider? ISPs are businesses that give internet access to users in exchange for a fee, allowing them to connect to the internet and utilize various online services. Definition and function of an ISP An ISP ... Read More

AHB (Advanced High-performance Bus) and APB (Advanced Peripheral Bus) are two bus protocols that are extensively used in the design of complex digital systems. The key difference between AHB and APB is their speed and intended usage. AHB is designed for high-performance applications requiring fast data transmission rates and low-latency communication, whereas APB is designed for slower peripherals not requiring high-speed data transport. Read this article to find out more about AHB and APB and how they are different from each other. What is AHB? AHB is an ARM-designed high-performance bus protocol for connecting high- speed peripherals and memory in ... Read More

There are two different technologies namely, CVT (Constant Voltage Transformer) and UPS (Uninterrupted Power Supply) that are used for providing power conditioning and protection. A CVT is an electrical device used to provide a constant output voltage despite variations in the input voltage or load, whereas a UPS is an electronic device used to provide power during power outages and voltage fluctuations. Read this article to learn more about CVT and UPS and how they are different from each other. What is a CVT? A CVT is an electrical device that is used to provide a constant and stable ... Read More

mAh (milliampere-hours) refers to a battery's capacity, or the amount of energy it can store and deliver. NiMH (nickel-metal hydride) refers to the chemical composition of the battery. Read this article to find out more about NiMH and mAH batteries and how they are different from each other. What are NiMH Batteries? In NiMH batteries, hydrogen is used to store energy. Nickel Metal Hydride consists of a nickel hydroxide positive electrode plate, a hydrogen ion negative electrode plate, potassium hydroxide or another alkaline electrolyte, and a separator. NiMH batteries are commonly used in cell phones, digital cameras, pagers, electric toothbrushes, ... Read More

Air coolers and air conditioners are popular electronic appliances that help cool down a room’s temperature. But these two appliances operate in completely different ways and provide different set of features. A cooler is also known as an evaporative or air cooler, which generally works by pulling in the hot air from the room and passing it over the wet pads, where it causes the water to evaporate and cools the air. The air that has been cooled is now circulated back into the room by lowering the room temperature. Coolers are more energy efficient comparing it to the air ... Read More

Batteries are a critical component of many devices and machines, from laptops and phones to cars and industrial machinery. But not all batteries are created equal; they come in different shapes, sizes, and technologies. Two of the most common battery types used today are DL and CR batteries, so it’s important to understand the difference between them. In this blog post, we will be looking at the essential facts about DL and CR batteries – including their composition, applications, cost considerations, and more – so you can make an informed decision on which type is right for your needs. ... Read More

Both digital television and DTV refer to the digital transmission of visual and audio signals. There is, however, a distinction between digital TV and DTV. The distribution of digital signlas over traditional broadcasting methods, such as cable or satellite, is referred to as digital television. On the other hand, DTV refers to transforming an analog signal into a digital format so it may be sent via digital media such as broadband Internet. DTV (Digital Television) and Digital TV are commonly used interchangeably, although there is a significant distinction between the two. DTV is a digital television that uses HDTV ... Read More

Any gadget may be changed to meet the user's choice. In most devices, each controlled element has only one adjustment knob. However, in certain circumstances, there are two adjustment knobs labeled coarse and fine adjustments. The key distinction between the two is the size of the increase in each stage. In coarse adjustment, a tiny movement results in a significant leap, but the converse is true in fine adjustment. Another distinction between coarse and fine adjustment is the range. The coarse adjustment spans the whole range from zero to one hundred percent. On the other hand, the fine adjustment only ... Read More