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by Tarun Agarwal 10 years ago

Timers – 555, 556 & 7555

555 Timers 555 timer IC is an integrated circuit used in a variety of applications like Timer, multivibrator, pulse generation, oscillators, etc. It is a highly stable controller capable of producing accurate timing pulses. With Mono-stable...

by Tarun Agarwal 10 years ago

Ultrasonic Detection – Basics & Application

Ultrasonic detection is most commonly used in industrial applications to detect hidden tracks, discontinuities in metals, composites, plastics, ceramics, and for water level detection. For this purpose, the laws of physics which are indicating...

Touch Screen Technology
by Tarun Agarwal 10 years ago

What is a Touch Screen Technology & Its Working

Touch screen technology is the direct manipulation type of gesture-based technology. Direct manipulation is the ability to manipulate the digital world inside a screen. A Touch screen is an electronic visual display capable of detecting...

Smart Cards
by Tarun Agarwal 10 years ago

How does the Smart Card Works?

The first smart card like Télécarte was launched in the year 1983. It is a telephone card used for payments within French payphones. At present, Smart cards are everywhere & they have replaced by magnetic stripe card technology, which...

by Tarun Agarwal 10 years ago

Understanding Voice Recognition

Imagine yourself sitting relaxed on the sofa and just ordering your computer or laptop or cell phone to carry out simple tasks like typing a letter or carrying out few commands. Is it possible? Of course it is, that’s where Voice recognition...

by Tarun Agarwal 10 years ago

Testing FM Transmitter

Frequency Modulation (FM): We know that in amplitude modulation (AM), the frequency is constant which varies only the amplitude. Whereas in frequency modulation (FM), which varies the frequency and keeps the amplitude constant. There are...