HP Visualize c360 PA-RISC Visualize Workstation Universal Serial Bus - Page 5

How USB Got Here - solutions

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How USB Got Here As with PCI, USB is sponsored by an independent consortium that was initiated by Intel. Work began on the standard in 1993. USB was a response to several issues: 1. PS/2, RS-232C serial and parallel (Centronics, ECP, EPP, IEEE-1284) have seri- ous deficiencies, and occupy too much panel space in a shrinking world. 2. Dedicated ISA cards are vanishing. SCSI and dedicated PCI cards are overkill for many desktop applications. FDD and IDE are too resource-limited for many devices that might otherwise use them. 3. It was getting increasingly expensive for suppliers to maintain proprietary desktop connectivity solutions such as ADB (Apple Desktop Bus), Access.Bus, AT&T CHI (Concentration Highway Interface), Apple GeoPort and HP-HIL. 4. The IRQ shortage in the Intel architecture isn't going to be solved by adding more IRQs. 5. An intelligently implemented new interface could revolutionize the desktop, enabling new capabilities, lower development cost, lower prices, and dramatic improvements in supportability and ease of use.

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How USB Got Here
As with PCI, USB is sponsored by an independent consortium that was initiated by
Intel. Work began on the standard in 1993.
USB was a response to several issues:
1.
PS/2, RS-232C serial and parallel (Centronics, ECP, EPP, IEEE-1284) have seri-
ous deficiencies, and occupy too much panel space in a shrinking world.
2.
Dedicated ISA cards are vanishing. SCSI and dedicated PCI cards are overkill
for many desktop applications. FDD and IDE are too resource-limited for many
devices that might otherwise use them.
3.
It was getting increasingly expensive for suppliers to maintain proprietary desk-
top connectivity solutions such as ADB (Apple Desktop Bus), Access.Bus,
AT&T CHI (Concentration Highway Interface), Apple GeoPort and HP-HIL.
4.
The IRQ shortage in the Intel architecture isn’t going to be solved by adding
more IRQs.
5.
An intelligently implemented new interface could revolutionize the desktop,
enabling new capabilities, lower development cost, lower prices, and dramatic
improvements in supportability and ease of use.