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Digital system, also known as digital system, uses discrete (that is, discontinuous) values (0 or 1) to represent information used for input, processing, transmission, storage, etc. Compared with non-digital (analog signal) systems, continuous range is used to represent information. Although the representations of numbers are separated, the information they represent can be separated (such as numbers, letters, etc.). ).), or continuous (such as sound, image and other measurements of continuous systems, etc. ).)
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Digital system
digital technology
Employment direction of digital specialty
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Digital product representation is usually used in computer science and electronics, especially when real-world information is converted into binary digital form, such as digital audio and digital photos. Signals carrying data are electronic or optical pulses, and each amplitude represents logic 1 (with pulse and/or high) or logic 0 (without pulse and/or low).
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Digital technology (digital technology)
brief introduction
Digital technology is also called digital technology because its core content is to digitize a series of continuous or discontinuous information.
In electronic technology, signals transmitted, processed and processed can be divided into two categories: one is analog signals, which are characterized by continuous changes in time and signal size, and the technology used to transmit, process and process analog signals is called analog technology; Another kind of signal is a digital signal, which is characterized by being discrete or discontinuous in time or size. The technology of transmitting, processing and processing digital signals is called digital technology.
Compared with analog technology
Compared with analog technology, digital technology has the following characteristics:
(1) binary is generally used in digital technology, so any element with two stable states can be used to represent binary (such as "high level" and "low level"): 0, 1. Therefore, its basic unit circuit is simple, and the accuracy of each component in the circuit is not strict, allowing the component parameters to have greater dispersion, as long as two completely different States can be distinguished. This characteristic is very beneficial to the integration of digital circuits.
(2) Strong anti-interference ability and high precision. Because digital technology transmits and processes binary information, it is not easy to be disturbed by the outside world, so it has strong anti-interference ability. In addition, the accuracy can be improved by increasing the number of bits of binary numbers.
(3) Digital signals are convenient for long-term storage, and can store a large number of valuable information resources.
(4) Good confidentiality, which can be encrypted by digital technology, making some valuable information resources difficult to be stolen.
(5) It is universal and can be used to form various digital systems with standardized logic elements.
Due to the above characteristics and rapid development, digital technology has been widely used in electronic digital computers, numerical control technology, communication equipment, digital instruments and other national economic departments.
In this section, the employment direction of editing digital major.
Film and television company-TV station's film and television column packaging.
Post-editing synthesis of digital video in film and television company-TV station.
Film and television company-TV station digital audio editing and synthesis.
Advertising companies-advertising photography and photo processing.
Advertising company-digital camera, advertising business script planning, material (including static and dynamic) collection.
Advertising company -3D animation production and post-synthesis.
Wedding companies-photographers, games and online games companies.
Extended reading:
1
Numbers are simple, just electronic.
Open classification:
IT, digital, information, technology, digital products