The b in what we usually call network bandwidth bps refers to bit (bit), also called bit. Bit (Binary digit) is a unit of information, a bit in a binary number, a measurement unit of information, and the smallest unit of information; necessary to reduce the number of alternative stimuli by half when different choices need to be made. information.
#The operating environment of this tutorial: Windows 7 system, Dell G3 computer.
The b in what we usually call network bandwidth bps refers to bit (bit), also called bit.
BIT (Binary digit), a computer term, is a unit of information and is a transliteration of the English BIT. It is also a bit in a binary number, a measurement unit of information, and the smallest unit of information. Information necessary to reduce the number of stimulus alternatives by half in situations where a different choice is required. That is, the information amount (number of bits) of the signal is equal to the logarithm of the signal stimulus amount with base 2. L. Hartley believed in 1928 that logarithmic units are most appropriate to measure the amount of information.
Bit rate refers to the number of bits (bits) transmitted per second. The unit is bps (bit per second), which can also be expressed as b/s. The higher the bit rate, the greater the amount of data (number of bits) transmitted per unit time. Information in computers is represented by binary 0s and 1s, where each 0 or 1 is called a bit, represented by a lowercase b, which is a bit. Capital B means byte, 1 byte = 8 bits, that is, 1B = 8b. Indicates the size unit of the file. Generally, kilobytes (KB) are used to express the size of the file.
Bit rate is also called "binary bit rate", commonly known as "code rate". Indicates the number of bits transmitted per unit time. Used to measure the transmission speed of digital information, often written as bit/sec. According to the number of bits occupied by each frame of image storage and the transmission bit rate, the speed of digital image information transmission can be calculated.
In modern digital communications, the transmission volume of digital sound, video and other information is large, so it is often measured in kilobits per second or megabits per second, respectively written as kbit/sec (or kbps ) and Mbit/sec (or Mbps). For example, the information amount of a digitized high-quality sound signal without compression encoding is generally 768kbit/sec, while the information amount of an ordinary color TV signal after digitization can reach 216Mbit/sec. A good digital transmission channel can transmit dozens of color TV programs, and its capacity can reach several gigabits or gigabits per second (written as Gbit/sec or Gbps).
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Bitstream:
Bitstream (Bitstream) was proposed by Philips in 1988 The technology and structure are very simple. First, the binary digital signal enters a module with a reference voltage. If the input signal is higher than the reference voltage, the output is 1, otherwise it is 0; the second signal is compared with the first signal, and the higher one outputs 1. Low output 0...and so on. Because it only compares the size of the interval, the sample needs to increase and a higher sampling frequency is required. From the early 256 times to the latest 384 times is a good example. Only one bit of signal will enter a DAC called a switched capacitor and be restored to an analog signal. Commonly used single-bit chips are all made by Philips. The earliest one was SAA7320. SAA7350 and TDA1547 are combined into a DAC7 circuit. Crystal also has similar products.
There is no conclusion on which one is better. What is certain is that most high-priced models are multi-bit designs.
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