A Brief history of USB-Part One
Like all technology, USB has evolved over time. Despite being a “Universal” Serial Bus, in its 18-or-so years on the market it has spawned multiple versions with different connection speeds and many, many types of cables.
What it replaced
If you've only been using computers for the last decade or so, it can be easy to take USB for granted. But for all of its ever-shifting specs and connectors, it's still a huge improvement over what came before.
If you were using a computer anytime before the dawn of USB in the Pentium and Pentium II eras, connecting pretty much anything to your computer required any one of a large variety of ports. Connecting a mouse? Maybe you need a PS/2 connector or a serial port. A keyboard? PS/2 again, maybe the Apple Desktop Bus, or a DIN connector.
By the late 90s, computers were starting to come with a couple of USB ports, usually a couple of them on the back of the system—these were usually USB 1.1 ports, capable of speeds up to 12Mbps. Accessory makers didn't all make the switch to USB right away, but keyboards, mice, printers, and other accessories began to include USB ports and connectors as an option, then as the primary interface.
When USB 2.0 became more widespread in the early-to-mid 2000s, it began to replace even more things. USB flash drives had a hand in the death of the floppy disk, and in the slow fade of optical media - why use CDs and DVDs for data storage and operating system install media when smaller, faster, more versatile USB drives can get the job done more quickly? USB 2.0 also made it feasible to connect external peripherals—like Wi-Fi adapters, optical drives, Ethernet ports, and so on—that previously needed to be installed inside the computer. Transfer speeds of up to 480Mbps helped make all of this possible, and in this era USB ports began to multiply and completely replace older legacy ports on desktops and (especially) laptops. It was pretty common to find four or more USB ports on the back of desktops, as well as one or two more mounted on the front for easy access.
Email: sales@SourceEC.com.my
Website: SourceEC.com.my
原文見： A Brief history of USB-Part One | SourceEC - Corporate Gifts Malaysia | Promotional Gifts | Door Gifts Blog
What it replaced
If you've only been using computers for the last decade or so, it can be easy to take USB for granted. But for all of its ever-shifting specs and connectors, it's still a huge improvement over what came before.
If you were using a computer anytime before the dawn of USB in the Pentium and Pentium II eras, connecting pretty much anything to your computer required any one of a large variety of ports. Connecting a mouse? Maybe you need a PS/2 connector or a serial port. A keyboard? PS/2 again, maybe the Apple Desktop Bus, or a DIN connector.
By the late 90s, computers were starting to come with a couple of USB ports, usually a couple of them on the back of the system—these were usually USB 1.1 ports, capable of speeds up to 12Mbps. Accessory makers didn't all make the switch to USB right away, but keyboards, mice, printers, and other accessories began to include USB ports and connectors as an option, then as the primary interface.
When USB 2.0 became more widespread in the early-to-mid 2000s, it began to replace even more things. USB flash drives had a hand in the death of the floppy disk, and in the slow fade of optical media - why use CDs and DVDs for data storage and operating system install media when smaller, faster, more versatile USB drives can get the job done more quickly? USB 2.0 also made it feasible to connect external peripherals—like Wi-Fi adapters, optical drives, Ethernet ports, and so on—that previously needed to be installed inside the computer. Transfer speeds of up to 480Mbps helped make all of this possible, and in this era USB ports began to multiply and completely replace older legacy ports on desktops and (especially) laptops. It was pretty common to find four or more USB ports on the back of desktops, as well as one or two more mounted on the front for easy access.
Email: sales@SourceEC.com.my
Website: SourceEC.com.my
原文見： A Brief history of USB-Part One | SourceEC - Corporate Gifts Malaysia | Promotional Gifts | Door Gifts Blog
A Brief history of USB-Part One
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Reviewed by Unknown
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