Learning Karnaugh Map Made Easy with Digital Electronics Video Tutorials

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Even a few years ago when computer-aided tools did not become a part of our everyday life, engineering still was not dependant on EDA tools like simulators and logic synthesis. Back then students used to make out their designs as gate-level schematics using pencil and paper. These DIY techniques in a way made them rather good for things like logic minimization, and one of these techniques was Karnaugh maps.

Karnaugh maps vs. the Modern Technology

Nowadays with the emerging availability of computer-aided tools like logic synthesis, Karnaugh maps are perhaps one of the most underused tools in the electronics industry. But whether you need it or not, it is always a suggested to understand basic techniques, because you never know when you will feel the need of something from first principles.

What is a Karnaugh map?

To put in one simple statement, the ‘Karnaugh map’, also known as the ‘K-map’, is a method to simplify Boolean algebra expressions. Its history tells us that it was first originated by Maurice Karnaugh who introduced it in 1953 as a refinement of Edward Veitch’s 1952 Veitch diagram.

Karnaugh maps are predominantly used for their ability to resolve race conditions by adding redundant logic terms that “overlap” adjoining groups. But once again, this sort of thing is handled by logic synthesis these days, but as I told earlier that you never know when you might need to understand this fundamental stuff.

Learn Digital Electronics Tutorials to understand Karnaugh map better

Now, the question arises at first, why we need video tutorials. The technical study of a crucial subject like Digital Electronics requires understanding of its core functioning. To serve this particular purpose, these video tutorials are made. They are the vivid source of useful information on varied topics of Digital Electronics like Karnaugh map.

Video tutorials also allow students to get video tutorials on digital electronics by a monthly subscription at a very affordable price. Video tutorials have now become an important part to students because they add an extra dimension to learning, whether recorded or live, that makes a student’s educational experience more valuable. Transforming a classroom setting to a live scene, these videos add different perspectives and mechanisms that students might not be able to take advantage of in their regular textual learning.


How to Make AM Radio-Receiver for Beginners

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It’s very simple to make an AM radio receiver with help of just a few electrical components. Electronics video tutorial services can lead you with grace, through the easy steps of building a radio at home. First know how the basic gears work inside a radio.

  • An antenna can catch electromagnetic waves from the air and turn them into electrical signals
  • A tuner to point out the specific carrier frequency—which corresponds to the radio-station that you want to tune to.
  • A diode or detector that avoids high-frequency signals. But grabs low-frequency ones.
  • After the detector catches the signal, an amplifier is required to enhance the signal.
  • A speaker in the radio is the one where sound comes from.

Now let’s get down to free electronics tutorials to the Steps to build a Radio

  • First collect the materials vitally important, as mentioned above.
  • Source: bit.ly/1xQqHbS

    For building antenna, a piece of wires required, long enough to catch signals. The ideal length of the antenna wire should be 50 feet. But you can also do with a smaller one. Hang a coil (5 inch high) around a plastic tube and now attach the wire to the coil.

  • A wire coil here can be used as “inductor”. Now in order to build a circuit that tosses away all unnecessary, hullabaloo signals, you have to combine the inductor with a ‘capacitor’. This circuit can be marked as a ‘resonator’ now.
  • Now what the resonator does it to resonate on a frequency which depends on the indictor’s size. Unit of inductance is ‘henries’ and capacitance unit is ‘farads’.
  • Tuner coil can have 200 turns. One red insulation strip will mark it. The insulation scuffed on the top. To build the tuner, you can get a brass thin strip which will have one contact at end to generate electrical contact next to different point tagging with coil—at the point of insulation.
  • The brass strip should wrap around a screw, the contact slide athwart the coil, altering inductance. Near contact will make inductance small, the circuit plays to high-frequency radio-station. When contact tilts to other end. It lowers the inductance and it plays radio station with low frequency.
  • The diode or detector allows electricity to flow in one way. But prevents from flowing in opposite direction. “germanium” detector resembles a teeny-weeny glass cylinder.
  • Speakers are the source of sound. Online electronics video tutorial services illustrate how the speakers absorb the electrical signal and a small electromagnet inside helps a plastic paper flutter from side to side, generating the sound coming out of it. Use a small speaker like you see in a portable radio.