Summary of INTRODUCCIÓN A LA ELECTRÓNICA DIGITAL: un audiovisual para principiantes.

00:00:00 - 00:20:00

This video provides a brief introduction to digital electronics, focusing on the advantages that digital signals have over analog signals. Digital signals are more discrete and can be higher voltage, making them more suitable for devices that use a digital output. Additionally, digital signals are practically noise-free, making them easier to work with than analog signals.

• 00:00:00 This video provides a brief introduction to digital electronics, focusing on the differences between analog and digital signals. Analog signals are found in all aspects of nature, from sound to light. Digital signals are similar, but can take on any value within a specific range. For example, voltage levels are analog, with a continuous range of values that increase or decrease gradually. Analog signals also change their values in an ascending or descending manner, rather than abruptly, and they have a negative sign at the end. Digital signals can be found in many aspects of our lives, such as light, sound, and power. The example of temperature illustrates the differences between analog and digital signals well. In this example, a digital control system is used to open and close a door. When the door is closed, the control system receives a high voltage (20,000 amps) on one side of the door. When the door is opened, the control system receives a low voltage (4000 amps) on the other side. The control system needs to receive a voltage that is halfway between these two values in order to open the door halfway.
• 00:05:00 This video introduces the basics of digital electronics, starting with analog signals and going up to 20,000 amps. In this case, the middle point would be a 24-volt DC value, with an extreme of 212,000 amps. We'll call this value the "midpoint" and discuss the extremes of the interval, 20,000 amps vs. 4000 amps, which yields a value of 24 volts DC. This value is found at 50% of the input power. Analog signals are often used in industrial applications, such as controlling physical phenomena such as temperature, pressure, etc. However, these physical phenomena can also be interpreted by a digital controller, with the same magnitude of analog to digital conversion, using transformers with the same name. There are two types of analog signals, continuous and alternating, just like there are two types of current: continuous and alternating. We'll also mention two types of electric currents: direct current (dc) and alternating current (ac). A continuous analog signal is one in which the voltage or current value changes with some physical phenomenon, such as temperature. An example of this is a temperature sensor common to students, the M-35, which has a resolution of 10,000 volts per degree Celsius, or 10,000 volts per
• 00:10:00 Digital electronics is a technology that uses small, discrete values known as digital signals. Unlike analog signals, which can take on a wide range of value, digital signals only have two possible values, "on" or "off." This makes them perfect for electronic devices, as they don't suffer from interference from other electronics and can be accurately read even when noisy. However, digital signals are susceptible to noise, and can be distorted by it to produce unexpected results. One example of this is the following diagram, which illustrates the difference between analog and digital signals. Analog signals are transmitted as waves of pressure waves, which are then converted to electrical signals by a microphone. These electrical signals are then amplified and played back through an audio speaker, thanks to the amplification feature of a microphone. However, noise from the environment can interfere with these waves, causing the signal to be distorted. This is one of the major problems with analog signals, as they are also susceptible to being distorted by noise. With digital electronics, things are different. A digital signal is only able to take on two discrete values, "on" and "off." This makes them perfect for digital devices, as they are immune to interference from other electronics and can be accurately read even when noisy. Additionally
• 00:15:00 In this video, an introduction to electronics digital is given, followed by a table comparing the advantages and disadvantages of digital vs. analog signals. Digital signals are more discrete and can be higher voltage, making them more suitable for devices that use a digital output, such as computers and smart TVs.
• 00:20:00 This video introduces the basics of digital electronics, focusing on how digital signals are represented using a square wave. Analog signals are represented by curves, and can take a variety of values depending on the values that are taken. Digital signals can only take two values, 0 or 1, while analog signals can take an infinite number of values. Another difference between digital and analog signals is that analog signals are very susceptible to noise, while digital signals are practically noise-free. Digital systems are easier to design mathematically, because discrete logic Boolean algebra is used. numerical codes are also easier to work with than analog systems, which require taking into account a variety of complex variables. Finally, digital systems are more efficient in terms of processing, because they are designed to work with direct, effective signals. Analog systems, on the other hand, are gradually degraded over time as they are copied multiple times, losing quality along the way. This video provides a brief introduction to digital and analog electronics, explaining the main differences between the two types of signals. Thanks for watching!