Black box, 3 of 3, Technically speaking – Black Box IEEE 1284 Serial→Parallel Converter 26658 User Manual
Page 3
BLACK BOX
®
3 of 3
06/08/2010
#26658
Item
Code
IEEE 1284 Serial→Parallel Converter
PI049a
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IEEE 1284.
Introduced in 1994, the IEEE 1284 standard addresses
data-transfer speeds and distance for parallel interfaces.
Standard parallel interfaces support speeds of up to 150 kbps
at distances of up to 6 feet (1.8 m); IEEE 1284 parallel inter-
faces can send your data over 100 times faster at up to 5
times the distance!
Although the Centronics
®
interface enabled only
unidirec-tional computer-to-peripheral data flow, the
IEEE 1284 interface enables bidirectional flow so peripherals
can send data to the computer.
The IEEE 1284 standard covers five separate parallel
modes, from the original Centronics (with which it’s
compatible) to the high-performance Enhanced Parallel
Port (EPP) mode.
The computer negotiates with the attached device
to deter-mine which mode to use.
technically speaking
PI049A