Differentiate the digital and analog technology and its uses
One of the most exciting things you could own was a digital watch. Instead of trying to figure out the time from slowly rotating hands, as you had to do with an old-style analog watch, you simply read the numbers off a digital display. Since then, students of best engineering college in Jaipur got more used to the idea of digital technology. Now pretty much everything seems to be digital, from television and radio to music players, cameras, cell phones, and even books.
What Is Analog Technology?
People accept digital things easily enough, often by thinking of them as electronic, computerized, and perhaps not even worth trying to understand. But the concept of analog technology often seems more confusing especially when people try to explain it in pages like this.
What Does Analog Actually Mean?
If you have an analog watch, it tells the time with hands that sweep around a dial: the position of the hands is a measurement of the time. How much the hands move is directly related to what time it is. So, if the hour hand sweeps across two segments of the dial, it is showing that twice as much time has elapsed compared to if it had moved only one segment. That sounds incredibly obvious, but it is much more subtle than it first seems. The point is that the hand's movements over the dial are a way of representing passing time. It is not the same thing as time itself, it's a representation or an analogy of time. The same is true when you measure something with a ruler. If you measure the length of your finger and mark it on the surface of a wooden ruler, that little strip of wood or plastic students of top engineering college in Jaipur are looking at is the same length as your finger. It is not your finger, of course. Instead, it is a representation of your finger: another analogy. That's really what the term analog means.
Analog measurements
Until computers started to dominate science and technology in the early decades of the 20th century, virtually every measuring instrument was analog. If an individual wants to measure an electric current, you did it with a moving-coil meter that had a little pointer moving over a dial. The more the pointer moved up the dial, the higher the current in your circuit. The pointer was an analogy of the current. All kinds of other measuring devices worked in a similar way, from weighing machines and speedometers to sound-level meters and seismographs.
Analog information
However, analog technology is not just about measuring things or using dials and pointers. When students of best BTech colleges Jaipur say something is analog, they often simply mean that it is not digital. The job it does, or the information it handles, does not involve processing numbers electronically. An old-style film camera is sometimes referred to as example of analog technology. You capture an image on a piece of transparent plastic "film" coated with silver-based chemicals, which react to light. When the film is developed, it is used to print a representation of the scene you photographed. In other words, the picture you get is an analogy of the scene you wanted to record. The same is true of recording sounds with an old-fashioned cassette recorder. The recording you make is a collection of magnetized areas on a long reel of plastic tape. Together, they represent an analogy of the sounds you originally heard.
What Is Digital Technology?
Digital is entirely different. Instead of storing words, pictures, and sounds as representations on things like plastic film or magnetic tape, we first convert the information into numbers and display or store the numbers instead.
Digital measurements
Many scientific instruments now measure things digitally (automatically showing readings on LCD displays) instead of using analog pointers and dials. Thermometers, blood-pressure meters, multimeters (for measuring electric current and voltage), and bathroom scales are just a few of the common measuring devices that are now likely to give an instant digital reading to the students of private engineering colleges in Jaipur. Digital displays are generally quicker and easier to read than analog ones, whether they are more accurate depends on how the measurement is actually made and displayed.
Digital information
All kinds of everyday technology also work using digital rather than analog technology. For instance, cell phones transmit and receive calls by converting the sounds of a person's voice into numbers and then sending the numbers from one place to another in the form of radio waves. Used this way, digital technology has many advantages. It is easier to store information in digital form and it generally takes up less room. Students of engineering colleges Jaipur will need several shelves to store 400 vinyl, analog LP records, but with an MP3 player you can put the same amount of music in your pocket. Digital information is generally more secure: cellphone conversations are encrypted before transmission something easy to do when information is in numeric form to begin with.
Which Is Better, Analog Or Digital?
Just because digital technology has advantages, that does not mean it is always better than analog. An analog watch might be far more accurate than a digital one if it uses a high-precision movement to measure time passing, and if it has a sweeping second hand it will represent the time more precisely than a digital watch whose display shows only hours and minutes. Analog watches can also keep time better than quartz ones: the day-to-day variations in a mechanical, analog watch tend to cancel one another out, while those in an electronic quartz watch tend to compound one another
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