The USB icon comes from Roman mythology.
During the World Wars, engineers and scientists at the time needed to label separate power buttons, switches, and rotary toggles in binary. In those days, a binary "1" meant "on" and a "0" meant "off.
In 1973, the International Commission on Electrical Engineering (IEEE) vaguely defined an in-between loop and named it the "standby power state.
In 1994, several companies, including Compaq, IBM, Intel, Microsoft, and DEC, planned to develop a common data-exchange interface to replace the then-incompatible data interfaces on a wide range of computers.
In 1995, Ajay Bhatt, an engineer at Intel, developed the first Universal Serial Bus (USB) interface.
In 1996, the industry-standard USB 1.0 Specification was adopted. USB 1.0 Specifications" was officially released.?
According to the USB 1.0 Specification, the USB icon was inspired by the Roman god Neptune's weapon, the trident, a powerful three-tined fishing fork.
However, to avoid the spear shape suggesting that people are sticking their USB storage devices all over the place, the designers have made the three roots of the Trident a little different, so that it doesn't look like a fishing fork. The designers have modified the three tines of the trident by changing the triangular shape of the left and right tines to a circle and a square, respectively. These three different shapes mean that a variety of different external devices can be connected using USB as a standard.
Expanded Information:
I. Relevant History
From the publication of USB V0.7 on November 11, 1994, USB version has evolved over the years to version 3.1, becoming the standard expansion interface in twenty-first century computers. Currently (2016) USB 2.0 and USB 3.0 interfaces are predominantly used in motherboards, with good compatibility between the USB versions.
USB uses a 4-pin (9-pin for USB 3.0 standard) plug as the standard plug, and uses a daisy-chain format to connect all peripherals, up to a maximum of 127 external devices, with no loss of bandwidth.USB requires support from all three aspects of the host hardware, the operating system, and the peripherals to work.
The twenty-first century motherboards are generally used to support the USB function of the control chipset, the motherboard is also installed on the USB interface socket, and in addition to the back panel of the socket, the motherboard is also reserved for USB pins, can be connected to the front of the chassis through the cable as a front USB interface for easy access (note that, in the wiring to read the motherboard manual and connect the diagram, do not connect the wrong). The USB ports can be connected to the front of the chassis via a cable for easy access.)
Additionally, the USB port can be used to connect two computers via a dedicated USB cable, and can be extended with more ports via the Hub. USB has the advantages of fast transfer speeds, ease of use, hot-swappable support, flexible connectivity, and independent power supply.
You can connect a mouse, keyboard, printer, scanner, webcam, charger, flash drive, MP3 player, cell phone, digital camera, portable hard drive, external CD-ROM/floppy drive, USB network card, ADSL Modem, Cable Modem, etc., to almost any external device.
Two, related applications
With the rapid development of computer hardware, peripheral devices are increasing, keyboard, mouse, modem, printer, scanner has long been known to people ****, digital cameras, MP3 Walkman one after another, so many devices, how to access the personal computer?USB is based on the purpose of the generation.
USB is a computer peripheral connection standardization, a single interface, its specifications by Intel (Intel), NEC (NEC Corporation), Compaq (Compaq), DEC (Digital Equipment Corporation), IBM (International Business Machines Corporation), Microsoft (Microsoft), Northern Telecom (Northern Telecom). Telecom (Northern Telecom) jointly developed.
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