Canon fb1210u サービスマニュアル

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  Since early 1997, the Universal Serial Bus (USB) has been the standard on most PCs.  The
USB standard was developed by Compaq, IBM, Intel, Microsoft, NEC, and Northern Telecom.  It
resulted from an industry-wide initiative to standardize peripheral attachments to PCs, and to
improve the speed, performance and ease of use of PC peripherals.

  USB has been supported from Windows 95 (OSR 2.1), and it is now a key component of
Windows 98.  In addition, USB are supported in Windows CE and Windows 2000 according to
Microsoft.  USB support is currently available on the Apple platform and will be available
shortly on some other platforms.

1. True Plug & Play
  Unlike the previous generation of SCSI scanners, no add-in cards are required to setup the
USB scanners.  This eliminates complex procedures, such as opening the box to install a card,
or reconfiguring the system (setting DMA, IRQ, jumper cables, etc.)  The USB scanners are
simply plugged in and unplugged at any time.

2. Higher Speed
  USB scanner is nearly 10 times faster than a standard parallel-port scanner at bandwidth 12
Mbits/sec.

3. Multiple Devices Support
  USB specification can support up to 127 devices simultaneously on a computer by using
“hub” terminals as additional plug-in locations.