began in the easiest way possible. The mechanics and electronics of their early days went hand in hand. In this way, turntables and turntable plates were created. Everyone knows what such a thing looks like, black round pancakes with scallops. But how does it actually work? On vinyl records, the grooves are mechanically carved into a spiral, through which a needle is guided, dissecting the amplifier to convert the grooves into sound. Therefore, it is a simple notation that arises simply by carving a spiral on the board. Engraving is a complex procedure, the notch must be very accurate, and faster production can not be easily accelerated, because it breaks the needle, the hardest thing in the world – the diamond.
Then came the tape. We all know that they consist of magnetic strips wound on 2 disks. Magnetism is created by the properties of an atom, which in English is called “spin” and refers to rotation around its own axis. Some atoms achieve higher rotational speeds and thus better magnetism. Electronic components, called coils, can convert magnetic fields into electric fields or vice versa. In this way, the so-called induction, the sound is converted into a magnetic cassette.
The so-called Cd works on the same principle as the already mentioned plate. The only important difference is that it is optical, not mechanical. The layer is burned and read using a laser beam. At the same time, the data is recorded not in a spiral, but in concentric circles. The reading device then emits a laser beam into these circles, which is reflected or absorbed by the disk surface. When it is reflected, it is converted into an electrical signal by the photoresist.
The last and easiest and fastest way to record data is an SSD. This recording method is known as a flash disk. This is actually a complex system of transistors that can have a digital value of 1 or 0, depending on the direction of the signal. Their advantage is the transmission rate, and their disadvantage is that individual transistors have a limited life, and gradually the gain reduces its capacity.
What do you think is good? New digital technology or original records?
