Facebook New Awesome Emoticons Chat Codes

In this post I am going to show you some new about facebook 

These are very great and awesome emoticons codes it will impress your friends and make them however you want. The list is up to 50 emoticon codes. Just copy and paste it and see the emo 50+ styles listed. You can save it into your computer desktop into text file. 

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What are the differences between Arduino and Raspberry pi?

Most of you know about arduino few of you may know about raspberry pi here i am explanning what is raspberry Pi and difference between Arduino and Raspberry Pi.

What is Paspberry  Pi

The Raspberry Pi is a credit-card sized computer board that plugs into a TV and a keyboard. It’s a miniature ARM-based PC which can be used for many of the things that a desktop PC does, like spreadsheets, word-processing and games. It also plays High-Definition video. The Raspberry Pi model B board is supplied as the board only, and comes without operating system, SD card, power supply, keyboard, case or cables. 

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TITAN Future Robot

Titan's 

Titan the Robot is an entertainment concept unlike anything on earth and is utilised by event management companies worldwide to add something very special any festival, corporate party or as the ultimate in shopping mall entertainment. Titan is always very popular at festivals, trade shows, shopping centres, not to mention Halloween, Bonfire Night and Christmas events.

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Curiosity NASA Rover Images & Animated Videos

NASA has taken a bold new step in the exploration of Planet Mars with a new rover called Curiosity External link, Opens in a new window (centerpiece of the Mars Science Laboratory mission). Curiosity will seek to determine if the Red Planet ever had conditions to support life. Launched from Cape Canaveral on November 26, 2011, Curiosity carries a Canadian-made geology instrument that will enable the rover to determine the chemical composition of the rocks and soil on Mars.
The mobile lab will be equipped with ten different instruments, each with specialized capabilities to investigate different aspects of the rocks and soils or the current environment of the planet. Compiling the data from all the instruments will help scientists establish if Mars was once a more hospitable place for life.
Although recent missions led by Curiosity's predecessors have provided valuable data on the geological composition of our planetary neighbour, Curiosity will delve into Mars' environmental history in much greater detail than previous missions. This laboratory on wheels will act as a motorized field geologist and geochemist, probing and analysing the Martian surface using, among other things, its Alpha Particle X-ray Spectrometer (APXS) provided by the Canadian Space Agency (CSA). The spectrometer, specially adapted and tuned for the mission, will analyse samples to help ascertain the potential habitability of Mars.

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Difference Between HTTP & HTTPS

Everyone surfs the net these days..... & you go through thousands of websites .... here is a piece of information about the securities of the websites.....

Difference between "http" & "https".

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Shutdown Computer with a Cell Phone and Outlook Express

By using this method, a you can shutdown, restart, hibernate, etc. his or her computer, just by sending an email from his or her phone.

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TTL and CMOS characteristics

Supply voltage. 

The bipolar TIT, fami-lies require +5 volts, +5%, whereas the CMOS families have a wider range: +2 to +6 volts for HC and AC, +3 to +15 volts for 4000B and 74C. The HCT and ACT CMOS families, designed for compatibility with bipolar TTL (see below), require +5 volts. Input A TTL input held in the LOW state sources current into whatever drives it (0.25mA typ for LS), so to pull it LOW you must sink current. Since the TTL output circuit (a saturated npn transition) is good at sinking current, this presents no problem when TTL logic is wired together, but you must keep it in mind when driving TTL with other circuitry. By contrast, CMOS has no input current.

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Digital Keypad Lock with auto lock after 18 sec feature .wmv

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Special Devices

PROGRAMMABLE OP AMPS

One class of specialized op amp is the micropower programmable op amp. Such devices utilize an external resistor to establish the quiescent operating current for the internal stages. That is, the internal stages are biased at a particular operating current by the selection of an external resistor. Several characteristics of the amplifier are altered by changes in the programming current (JP):

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Special Kinds of Transformers

Tapped Transformer

Tapped transformers have an additional connection, or tap, on their primary and/or secondary windings. An additional tap lead on the secondary gives a transformer three possible output voltages.

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Specific Kinds of Relays

Subminiature Relays

Typical mechanical relays are designed for switching relatively large currents. They come with either dc or ac coils. Dc-actuated relays typically come with excitation-voltage ratings of 6, 12, and 24 V dc, with coil resistances (coil ohms) of about 40, 160, and 650 Ω, respectively. Acactuated relays typically come with excitation-voltage ratings of 110 and 240 V ac, with coil resistances of about 3400 and 13600 Ω, respectively. Switching speeds range from about 10 to 100 ms, and current ratings range from about 2 to 15 A.

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Transistor Comparison With Electron Tubes

 a. Efficiency and Voltage Requirements. 

transistor power efficiency is greater than that of the electron tube because the transistor does not require heater power. In addition, it does not require warm-up time, and it does not require a large de voltage to operate. Other advantages of the transistor are its useful life (b below), its noise level (c below), and its size and construction (d below).

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5 Main Transistor Functions

 

 a. Amplification. 

The transistor may be used as a current, voltage, or power amplifier. For instance, a stronger signal current, may be obtained from a transistor than is fed into it. A signal of 1 milliampere fed into the input circuit of the transistor may appear as 20 milliamperes at its output. Various circuit arrangements provide for various amounts of signal amplification.

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5 Things You Should Decide Before Making Robot

Having decided what type of robot to be built, the next step is to draw up a first specification. It may have to be revised later — at least its minor details.

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Why Digital Storage of Data? Why Not Analog ?

The basic goal of digital memory is to provide a means to store and access binary data: sequences of 1's and 0's. The digital storage of information holds advantages over analog techniques much the same as digital communication of information holds advantages over analog communication. This is not to say that digital data storage is unequivocally superior to analog, but it does address some of the more common problems associated with analog techniques and thus finds immense popularity in both consumer and industrial applications.

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War Between AC(TESLA) & DC(EDISON)

You might wonder why ac is even used. Isn’t it a lot more complicated than dc?
Well, ac is easy to generate from turbines, as you’ve just seen. Rotating coil-and magnet devices always produce ac, and in order to get dc from this, rectification and filtering are necessary. These processes can be difficult to achieve with high voltages.

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Encyclopedia Of 1000 Circuits

This is  version of the Encyclopedia of Electronic Circuits has 1000 electronic circuit schematics. Schematics are viewed with the SuperCAD viewer (VIEW), which is a reduced version of SuperCAD and is designed for faster and simplified operation when used with the Encyclopedia. 

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Teach Yourself Electricity and Electronics

Contents

 Chapters

1 Basic physical concepts 3
2 Electrical units 23
3 Measuring devices 44
4 Basic dc circuits 65 
5 Direct-current circuit analysis 82
6 Resistors 99
7 Cells and batteries 118
8 Magnetism 134

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200+ Engineering Symbols

Click On Image To View Large

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Transistor Circuits 2 Book

Download free 200 Transistors circuits Books, all circuits are detailed explained 

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Gears and Types in Robotics

Gears

Gears are essentially levers that work using rotational motion. They transfer one rotational motion into another. The radii of the different gears dictate if the effort required will be greater or less than the load. There are different types of gears, depending on what type of motion has to be transferred. These

are:

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Servo Motor Advantage and Comparison

What is Servo Motor ?

A Servo Motor is a motor that has an internal gear-based transmission system and electronic control.

 

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Convert Image With Text into text document

If you want to get rid of again and again writing text that is written within image. Here is solution convert your image into text document easily and free with in seconds .

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