The usage of an internet and online applications have extremely improved currently and become an essential part of our daily life. For different applications like internet banking, personal information passing and online financial transactions top notch security are the prerequisite. But, in the current past cyber-attacks have become very mutual and are posing vast tasks to both the users and service workers similarly.The modus operandi of the main cyber robbery racket is takeover user credentials, especially username and key to break the security of user-based verification systems. To overcome this problem, security system with the smart card authentication is secure and consistent authentication system that safeguards user authorizations and eliminates the problems like memorizing multitude of user names and passwords.
In this article, we will discuss how to build LM386 audio amplifier circuit. It is a low-cost amplifier and also can power any speaker. For the size and the cost of the circuit, the sound from the IC LM386 audio amplifier can be effectively loud. There are several audio amplifier circuits designed using LM386 IC. The main drawback with these circuits is interference and noise. The noise from this circuit is much less and if designed on a right circuit board, this will create a great Audio Amplifier. The LM386 integrated circuit based audio amplifier circuit is a low power circuit that can supply a maximum power, i.e, 1 Watt (1W) and can be used in an extensive range of applications such as laptop speakers, portable speakers, etc.
Nowadays, the lack of water purifying is a major problem in rural areas. Because around 800 plus million people suffering every day due to insufficient quantities of water clean and also filtered water. Most of the present technologies available in the market are combating this problem due to high cost and power consuming. The solutions that do not use an extra of power generally need expensive and maintenance of the time-consuming filter. There are several chemical processing mechanisms for purifying the water but, if we use improperly it is hazardous. To overcome this problem with the idea of low cost in mind here is a system, namely “solar energy-based water purification system” that will take an advantage of natural energy in order to power a water purification system.
Arduino board was designed in the Ivrea Interaction Design Institute intended for students without a background in electronics and programming concept. These Arduino boards started altering to adapt to new requirements and challenges, separating its present from simple 8-bit boards to products for IoT (Internet of Things) applications, 3D printing, wearable, and embedded applications. All boards are entirely open-source, allowing users to build them separately and finally adapt them to their exact needs.
The Bluetooth technology is wireless technology and the main purpose of Bluetooth is used for the exchanging of data in between the two electronic devices. There is a short distance between the two electronic devices and it is built by using the personal area network. This technology is developed by the Bluetooth special interest group and its physical range is from 10m to 100m. The Bluetooth device can connect up to seven devices and it is used in the industry like smartphones, personal computers, and gaming consoles, etc. The IEEE standardized Bluetooth as IEEE 802.15.1, but the standards are maintained for short periods.