Symbols and Numerics
Return to Glossary.
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1024-byte format
- A format for diskette
2D diskettes with 1024 bytes per sector and 8 sectors per track.
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128-byte format
- A format for diskette
1 diskettes with 128 bytes per sector and 26 sectors per track.
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1980 X.25 call
- A call that conforms
to the 1980 X.25 protocol specifications.
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1984 X.25 call
- A call that conforms
to the 1984 X.25 protocol specifications.
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1988 X.25 call
- A call that conforms
to the 1988 X.25 protocol specifications.
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256-byte format
- A format for diskette
2D diskettes with 256 bytes per sector and 26 sectors per track.
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3270 attention field
- A field on a
display screen that contains a null, a space, or an ampersand in the first
position. The field can be selected using the Cursor Select key, which causes
data to be sent to the host system.
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3270 device emulation
- The i5/OS™ support that
allows a system to appear as a 3274 Control Unit in a BSC multipoint network
or an SNA network.
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3270 display emulation
- The function
of i5/OS 3270 device emulation support that converts 3270 data streams intended
for a 3278 display station into data streams that can be recognized by a display
station attached to the system.
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3270 printer emulation
- The function
of i5/OS 3270 device emulation support that converts 3270, DSC, and SCS
data streams intended for a 328X printer into data streams that can be recognized
by a printer attached to the system.
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3GL
- See third
generation language.
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3-state check box
- A square box with
associated text that represents a choice. Unlike a regular check box, which
has only two states (selected and deselected), a 3-state check box has three
states (selected, deselected, and unavailable). The unavailable state is
displayed as a halftone and denotes that the 3-state check box cannot be selected.
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400/REXX
- See REXX/400.
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512-byte format
- A format for diskette
1 diskettes with 512 bytes per sector and 8 sectors per track.
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5250 display
- Any display device that
uses the 5250 data stream. See also Programming Development
Manager.
-
5250 emulation
- Any one of many licensed
programs that allow a personal computer to perform like a 5250 display station
or printer and to use the functions of an i5/OS operating system.
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5290 display
- Any display station
from the 5290 Display System.