In “Computer History – The Rise of Electronics”, we saw how the development of radar during the Second World War helped to better understand pulse technology. . At the same time, the methods have been revised to perform calculations for the ballistic trajectories. From these beginnings, the digital computer was developed.What is “analog” and “digital”? Two examples will illustrate the difference. An analogue is something similar, of course, but you can learn that a similar process or function is a similar process or very similar to another process. The metaphor is often used to explain or help understand some of the new features in understandable terms.
For example, home wiring for home wiring lights a lamp. The power unit is controlled by the circuit breaker, when it is available at the output where the lamp is connected. This can be compared to plumbing, where the water source is controlled by a valve or faucet when entering the house, then the pipes take the water to the kitchen, where the feed can be activated or deactivated by a tap or is immediately available. Can control the flow of water, which looks like a lamp dimmer.This analogy is not exactly the same, but it helps to understand the source of electricity from someone who knows the plumbing system.
The numerical number, for numbers or numbers, refers to the use of numbers to represent all things. For example, the digital clock uses numbers to indicate the time. The numbers on the traditional clock face are spread around the dial so that the needles that you point at look like the passage of time. For example, a thin hand pointing down, halfway to the circle, represents a half-hour pass. If the hour hand indicates the number 3, it indicates 3 hours out of 12 for a full circle. When we learned to tell the time, we knew it was in the third half. The digital clock indicates 15:30.
Closer to our subject, we can consider the evolution of the phonograph record. Vinyl LP was the standard medium for recording and playing music since the 1950s. The tape recordings were developed in parallel. Both modifiers use a tuning system in which the amplitude or force of the tuning is proportional or symmetrical to the high vocals or the original reading. This music was converted by microphone into a variable electrical signal resembling a sound.
With the invention of the CD in the 1980s, digital techniques were used to represent changes in sound levels, using a sampling pulse to monitor sound elevation. This sampling pulse is used at a high frequency. It is not audible and follows the progress of the sound. The principle is similar to that of a camcorder in which a series of still images appears at 32 frames per second, so that they seem animated. Similarly, the TV uses a frame rate of 50 or 60 per second (strictly speaking, 25 to 30 synaptics).
The great advantage of the digital recording and multiplication system (amplifiers and other digital as well) lies in the fact that due to the nature of the high frequency pulses, it can be copied integrally when transferring from one medium to another for example by copying a CD path to the CD set. With an analog system, there is a loss at each transfer, so recording on a tape copied from a vinyl record via a stereo is significantly less than the original.
The computer can also be analog or digital, although the digital type can exceed the analog to a large extent. A representative computer can be used for research work: for example, a recording of the temperature and humidity chart in motion can be recorded in an air-conditioned room with a new design air conditioner, and the presentation can also be displayed at the screen. In both cases, the graph is a representative representation of temperature and pressure.
The first aircraft electronic control devices operated using an analog type computer, and the number of flaps moved was proportional to the movement of the joystick, but not directly proportional. A calculation was made, which depends on the speed and altitude of the aircraft, as well as other factors. Electronic “boxes” include linear speakers and variable response circuits, all powered by control sensors