Software Product Description

Software Product Description
Software
Product
Description
PRODUCT NAME:
DECrouter 250, Version 1.1
DESCRIPTION
The DECrouter 250 software is a communications product that provides an asynchronous/synchronous routing
service for the Local Area Network (LAN). This allows
DECnet nodes running DDCMP to communicate with
nodes on an Ethernet/802.3 LAN and allows DECnet
DDCMP nodes on an Ethernet/802.3 LAN to communicate with nodes outside the LAN within a Wide Area
Network (WAN).
Overview
The DECrouter 250 software provides access to and
from Phase IV/IV+ DECnet nodes on a LAN and
Phase III or Phase IV/IV+ DECnet nodes over asynchronous/synchronous lines. These nodes can be located either locally via dedicated wiring, or remotely via
modem connections. Note that LAN refers to any Local Area Network that conforms to IEEE 802.3, or ISO
8802/3 standards.
The DECrouter 250 software runs on the DECrouter 250
(DSRVR) and the DEC WANserver 150 (DSRVJ) hardware units. These contain an Ethernet interface port
(IEEE 802.3 compatible). The DECrouter 250 hardware has eight asynchronous/synchronous serial communications ports, and the DEC WANserver 150 has
two asynchronous/synchronous serial communications
ports.
The DECrouter 250 software performs adaptive routing utilizing all of the asynchronous/synchronous lines
and the Ethernet/802.3 ports of the hardware. In the
case where communications to an end node might pass
through multiple routers, the DECrouter 250 software
has the capability of choosing the least cost path or rerouting in case of a line failure.
SPD 32.15.02
A major security feature of the DECrouter 250 software
is support for modem dial-back. This feature allows network managers tighter control over access to their DECnet networks.
The DECrouter 250 software must be downline loaded
onto the DECrouter 250 or DEC WANserver 150 hardware units over the Ethernet/802.3 port or the serial
communications ports.
Routing and DECnet Phase IV Areas
The DECrouter 250 software implements Phase IV/IV+
DECnet DDCMP routing and network management.
Phase IV/IV+ DECnet networks are hierarchical networks that can be segmented into up to 63 areas, each
containing up to 1023 nodes.
Routers can be one of two types; Level 1 or Level 2.
Level 1 Routers route directly toward nodes within their
own area, and route toward a Level 2 Router when the
destination node is in a different area. Level 2 Routers
act as Level 1 Routers within their own area, but in addition, route to other areas.
The DECrouter 250 software supports both the intraarea routing (Level 1) and inter-area routing (Level 2) for
Phase IV/IV+ nodes on a Local Area Network, or Phase
III/IV/IV+ remote nodes connected to one of the asynchronous/synchronous serial communications ports.
Line Support
The DECrouter 250 software uses the DECrouter 250
or DEC WANserver 150 hardware serial communications ports to connect nodes running asynchronous or
synchronous DDCMP DECnet, and the Ethernet/802.3
ports to connect to the Ethernet/802.3 LAN. The
asynchronous/synchronous ports operate in full-duplex,
point-to-point mode and support the ability to connect
manually dialed or auto-answered modems. The asynchronous/synchronous ports have been designed to be
compatible with modems conforming to Bell standards
and CCITT recommendations. Note that multipoint lines
or connections to DMC11s are not supported.
dt
The DECrouter 250 software supports intra-area (Level
1) and inter-area (Level 2) routing of messages between
DECnet nodes. These nodes can be Phase III/IV/IV+
routing nodes or end nodes. Use of this software offloads routing-related communications from hosts that
would otherwise serve as routing nodes on the Local
Area Network-based DECnet LAN.
Refer to the System Support Addendum (SSA 32.15.02x) for further information on supported modems.
April 1991
AE-PBAGC-TK
DECrouter 250, Version 1.1
SPD 32.15.02
The configuration information contained in the system
image on the load host can be modified by the System/Network Manager using a utility provided on the installation kit. The changes made to the configuration
information in the system image are retained until the
configuration utility is used to modify those changes.
The changes take effect the next time the system image is downline loaded to the DECrouter 250 or DEC
WANserver 150 hardware.
The DECrouter 250 (DSRVR) hardware has two high
speed serial ports and six low speed serial ports. The
DEC WANserver 150 hardware has one high speed serial port and one low speed serial port. The low speed
ports operate at up to 19.2 Kbps, and conform to CCITT
V.28/V.24 (EIA-232-D). The high speed ports operate
at speeds up to 64 Kbps and support CCITT V.36/V.11
(EIA-449/422), CCITT V.10 (EIA-449/423), CCITT V.35
Appendix A, as well as CCITT V.28/V.24 (EIA-232-D).
In asynchronous mode all ports operate at 19.2 Kbps
maximum.
Network and Configuration Management
The Network Management Utility (DECnet Network
Control Program (NCP)) on Phase IV DECnet hosts can
execute commands remotely with the DECrouter 250
software to perform three primary functions:
The DECrouter 250 software with the DECrouter 250
hardware supports eight lines at speeds and configurations of 2x64 Kbps, or 1x64 Kbps and 4x9.6 Kbps, or
8x19.2 Kbps.
• Display statistical and error information for the router
(for example, statistics on line usage or errors)
The DECrouter 250 software with the DEC WANserver
150 hardware unit supports two lines at speeds and
configurations of 1x64 Kbps and 1x9.6 Kbps, or 2x19.2
Kbps.
• Control the operation of the router (for example, starting and stopping lines, setting parameters, and loading software)
Adapter cables provide the necessary interchange circuits for the high speed ports. Refer to the System Support Addendum (SSA 32.15.02-x) for further information
on the required adapter cables.
• Test the components of the network (for example,
loop messages through all or part of a communications path to isolate a defective component)
The DECrouter 250 software also has a monitor that is
available both locally and remotely. The remote monitor
runs on VMS, ULTRIX (VAX or RISC), and MS-DOS/PCDOS host systems to monitor the current state of the
router. These displays are updated at pre-set intervals
and present current router data and status information
such as CPU and line utilizations, current adjacencies,
and buffer use.
Installation and Configuration
The DECrouter 250 software is installed and configured
on a VMS, ULTRIX (VAX or RISC), or MS-DOS®/PCDOS system (termed a load host).
The appropriate DECrouter system image is downline
loaded from the load host into the memory of the DECrouter 250 or DEC WANserver 150 hardware units. This
system image can be downline loaded over the serial
communications ports, as well as the Ethernet/802.3
ports. It should be noted, however, that some load hosts
will not support downline loading over serial communications ports.
Path Splitting
If the costs are set appropriately, the DECrouter 250
software performs path splitting. Note that routing cost
is an arbitrary network management parameter set by
the network manager to control network traffic flow. If
the cost between the router and the destination node is
the same on multiple asynchronous/synchronous ports,
up to a maximum of four circuits, then the DECrouter
250 software splits traffic across the ports. As a result,
higher data transfer rates and higher reliability due to
redundant paths are provided.
To identify which devices on a load host will provide
support for serial-line loading, refer to the corresponding DECnet Software Product Description for that host.
(DECnet-VAX SPD 25.03.xx and DECnet-ULTRIX SPD
26.83.xx.)
It should be noted that for this path splitting feature to
work, the destination nodes must support out-of-order
packet caching.
Each DECrouter 250 and DEC WANserver 150 hardware unit will have a separate system image on a load
host.
Performance
The DECrouter 250 software will support and saturate
the following serial line speeds and configurations with
minimum size DECnet packets:
The DECrouter 250 software contains the configuration
information that tailors the dedicated router system for
proper operation in its intended environment.
2
DECrouter 250, Version 1.1
SPD 32.15.02
• On DECrouter 250 hardware: 2x64 Kbps, or 1x64
Kbps and 4x9.6 Kbps, or 8x19.2 Kbps
For MS-DOS Operating Systems or PC-DOS Operating
Systems:
• On DEC WANserver 150 hardware: 1x64 Kbps and
1x9.6 Kbps, or 2x19.2 Kbps.
Software Licenses: QL-YG6A9-**
Software Media: QA-YG6AC-**
Software Documentation: QA-YG6AC-GZ
HARDWARE REQUIREMENTS
Software Product Services: QT-YG6*-**
VAX, MicroVAX, VAXstation, VAXserver, DECstation,
DECsystem, or PC configuration as specified in the System Support Addendum (SSA 32.15.02-x).
* Denotes variant fields. For additional information on
available licenses, services, and media, refer to the
appropriate price book.
DSRVR or DSRVJ as specified in the System Support
Addendum (SSA 32.15.02-x).
SOFTWARE LICENSING
SOFTWARE REQUIREMENTS
A separate license is needed for each DECrouter 250
(DSRVR) hardware and DEC WANserver 150 (DSRVJ)
hardware units on which this software product will be
used (except as otherwise specified by Digital).
For each VMS system acting as a load host or dump
receiver:
VMS Operating System running DECnet-VAX (either
end-node or full function)
The licensing provisions of Digital Equipment Corporation’s Standard Terms and Conditions provide in part
that the software and any part thereof (but excluding
those parts specific to the load hosts) may be used only
on the single DECrouter 250 (DSRVR) hardware or DEC
WANserver 150 hardware unit on which the software is
operated, but may be copied, in whole or in part (with
the proper inclusion of Digital’s copyright notice and any
proprietary notices on the software) between multiple
load hosts on the same LAN.
For each ULTRIX system acting as a load host or dump
receiver:
ULTRIX Operating System running DECnet-ULTRIX
For each PC System acting as a load host or dump
receiver:
MS-DOS Operating System or PC-DOS Operating System running DECnet-DOS.
This product does not provide support for the VMS or
ULTRIX License Management Facility. A Product Authorization Key (PAK) is not required for installation or
use of this version of the product.
Refer to the System Support Addendum (SSA 32.15.02x) for availability and required versions of prerequisite/optional software.
This software is furnished under the licensing provisions
of Digital Equipment Corporation’s Standard Terms and
Conditions. For more information about Digital’s licensing terms and policies, contact your local Digital office.
ORDERING INFORMATION
For VMS Operating Systems:
Software
Software
Software
Software
Licenses: QL-YG6A9-**
Media: QA-YG6AA-**
Documentation: QA-YG6AA-GZ
Product Services: QT-YG6*-**
SOFTWARE PRODUCT SERVICES
For ULTRIX Operating Systems on VAX:
A variety of service options are available. For more
information, please contact your local Digital office.
Software
Software
Software
Software
SOFTWARE WARRANTY
Licenses: QL-YG6A9-**
Media: QA-YG6AB-**
Documentation: QA-YG6AB-GZ
Product Services: QT-YG6*-**
The DECrouter 250 software is warranted for use only
with supported Phase III/IV/IV+ DECnet products supplied by Digital.
For ULTRIX Operating Systems on RISC:
Software
Software
Software
Software
Licenses: QL-YG6A9-**
Media: QA-YG6AD-**
Documentation: QA-YG6AD-GZ
Product Services: QT-YG6*-**
Warranty for this software product is provided by Digital
with the purchase of a license for the product as defined
in the Software Warranty Addendum of this SPD.
3
DECrouter 250, Version 1.1
®
Hayes is a registered trademark of Hayes Microcomputer
Products, Inc.
®
IBM is a registered trademark of International Business
Machines Corporation.
®
COMPAQ and Deskpro are registered trademarks of
COMPAQ Computer Corporation.
®
Olivetti is a registered trademark of Ing. C. Olivetti.
®
Tandy is a registered trademark of Tandy Corporation.
®
Toshiba is a registered trademark of Kabushiki Kaisha
Toshiba.
®
MS-DOS is a registered trademark of Microsoft Corporation.
™
SmartModem 2400 is a trademark of Hayes Microcomputer Products, Inc.
™
The DIGITAL Logo, CI, DEC, DECnet, DECrouter,
DECstation, DECsystem, MicroVAX, MicroVMS, PATHWORKS, ThinWire, ULTRIX, VAX, VAXcluster, VAXft,
VAXmate, VAXserver, VAXstation, and VMS are trademarks of Digital Equipment Corporation.
SPD 32.15.02
4
System
Support
Addendum
PRODUCT NAME:
DECrouter 250, Version 1.1
SSA 32.15.02-A
HARDWARE REQUIREMENTS
For ULTRIX Load Host Systems:
Processors Supported
VAX-Based Processors:
VAX:
VAXft 3000-310
VAX:
VAX 4000 Model 200,
VAX 4000 Model 300
VAX
VAX
VAX
VAX
6000
6000
6000
6000
Model
Model
Model
Model
VAX
VAX
VAX
VAX
8200,
8500,
8650,
8820,
VAX
VAX
VAX
VAX
VAX 6000-210, VAX 6000-220,
VAX 6000-230, VAX 6000-240,
VAX 6000 Model 300 Series,
200
300
400
500
Series,
Series,
Series,
Series
8250,
8530,
8700,
8830,
VAX
VAX
VAX
VAX
VAX 6000 Model 400 Series,
VAX 6000 Model 500 Series
VAX
VAX
VAX
VAX
8300, VAX 8350,
8550, VAX 8600,
8800, VAX 8810,
8840
VAX 9000-210, VAX 9000 Model 400 Series
VAX-11/730, VAX-11/750, VAX-11/780,
VAX-11/785
8200,
8500,
8650,
8820,
VAX
VAX
VAX
VAX
8250,
8530,
8700,
8830,
VAX
VAX
VAX
VAX
8300, VAX 8350,
8550, VAX 8600,
8800, VAX 8810,
8840
VAX-11/750, VAX-11/780, VAX-11/785
MicroVAX:
MicroVAX II, MicroVAX 2000,
MicroVAX 3100, MicroVAX 3300,
MicroVAX:
VAXstation:
VAXserver:
MicroVAX
MicroVAX
MicroVAX
MicroVAX
MicroVAX
II, MicroVAX 2000,
3100, MicroVAX 3300,
3400, MicroVAX 3500,
3600, MicroVAX 3800,
3900
MicroVAX 3400, MicroVAX 3500,
MicroVAX 3600, MicroVAX 3800,
MicroVAX 3900
VAXstation
VAXstation
VAXstation
VAXstation
II, VAXstation 2000,
3100 Series, VAXstation 3200,
3500, VAXstation 3520,
3540
VAXserver
VAXserver
VAXserver
VAXserver
3100, VAXserver 3300,
3400, VAXserver 3500,
3600, VAXserver 3602,
3800, VAXserver 3900
VAXserver 4000 Model 300
VAXserver
VAXserver
VAXserver
VAXserver
6000-210,
6000-310,
6000-410,
6000-510,
VAXserver
VAXserver
VAXserver
VAXserver
VAXstation:
VAXstation 2000, VAXstation 3100 Series,
VAXstation 3200, VAXstation 3500,
VAXstation 3520, VAXstation 3540
VAXserver:
dt
6000-220,
6000-320,
6000-420,
6000-520
VAXstation II, VAXstation II/GPX,
VAXserver 100, VAXserver 2000,
VAXserver 3100, VAXserver 3300,
VAXserver 3400, VAXserver 3500,
VAXserver 3600, VAXserver 3602,
VAXserver 3800, VAXserver 3900
VAXserver
VAXserver
VAXserver
VAXserver
6000-210,
6000-310,
6000-410,
6000-510,
VAXserver
VAXserver
VAXserver
VAXserver
6000-220,
6000-320,
6000-420,
6000-520
April 1991
AE-PBAHC-TK
DECrouter 250, Version 1.1
SSA 32.15.02-A
RISC-Based Processors:
DECstation:
DECsystem:
Load Host System Restrictions
DECstation
DECstation
DECstation
DECstation
DECstation
DECstation
DECstation
2100, DECstation 3100,
3100s,
5000 Model 200,
5000 Model 200CX,
5000 Model 200PX,
5000 Model 200PXG,
5000 Model 200PXG TURBO
Every load host on which the DECrouter 250 software
is installed must contain:
DECsystem
DECsystem
DECsystem
DECsystem
DECsystem
DECsystem
3100,
5000 Model 200,
5100, DECsystem 5400,
5500, DECsystem 5810,
5820, DECsystem 5830,
5840
• A supported connection to DECrouter 250 (DSRVR)
or DEC WANserver 150 (DSRVJ) hardware unit
• A valid system configuration for the relevant operating system and for the appropriate DECnet product
(refer to the DECnet and appropriate operating system Software Product Descriptions)
• An appropriate device available to read the software
during installation:
For DOS Load Host Systems:
— For VMS and MicroVMS Operating Systems:
magnetic tape or TK50 drive
PC:
— For ULTRIX Operating Systems: magnetic tape
or TK50 drive
VAXmate
DECstation
DECstation
DECstation
DECstation
DECstation
DECstation
200,
212,
300,
320,
333,
425
DECstation
DECstation
DECstation
DECstation
DECstation
— For MS-DOS® Operating Systems: an RX24 or
RX31 drive (a minimum of two drives, at least one
of which must be capable of reading 5.25 inch 360
Kbyte diskettes or 3.5 inch 720 Kbyte diskettes)
210,
220,
316,
325,
350,
Other Hardware Required
Olivetti® M24, Olivetti M28,
Olivetti M240, Olivetti M250,
Olivetti M280, Olivetti M290,
Olivetti M300, Olivetti M380,
Olivetti M486
The DECrouter 250 software runs only on the DECrouter 250 (DSRVR) or DEC WANserver 150 (DSRVJ)
hardware available as follows:
Tandy 3000NL, Tandy 4025LX
• DSRVR-AB for use with 240V AC power supplies
IBM® 5150, IBM 5160, IBM 5162, IBM 5170,
IBM 8530, IBM 8550, IBM 8555, IBM 8560,
IBM 8570, IBM 8580
• DSRVJ-AA for use with 120V AC power supplies
• DSRVR-AA for use with 120V AC power supplies
• DSRVJ-AB for use with 240V AC power supplies
The DSRVR and DSRVJ have a selectable ThinWire/Thickwire connector.
COMPAQ® Deskpro®,
COMPAQ Deskpro 286,
COMPAQ Deskpro 386,
COMPAQ Deskpro 486
Both the DSRVR and DSRVJ require adapter cables
to provide the necessary interchange circuits at the appropriate electrical interface types for their high speed
ports. The DSRVJ has one high speed port, the DSRVR
has two high speed ports. One of these cables is
needed for each high speed port used. The following
table shows the cable numbers for each of the electrical
interface types:
Toshiba® T3200, Toshiba T5200
Zenith Z-248, Zenith Z-386, Zenith 286
For DOS load host support, refer to the supported base
systems chart in PATHWORKS for DOS (SPD 55.07.xx)
for a list of supported systems configurations, and specific model numbers.
Adapter Cables
Processors Not Supported:
MicroVAX I, VAXstation I, VAX-11/725, VAX-11/782,
VAXstation 8000
2
Electrical Interface Type
Adapter Cable
V.11/EIA-422/V.36
V.10/EIA-423
V.35
V.24/V.28
BC19B-02
BC19E-02
BC19F-02
BS23V-02
DECrouter 250, Version 1.1
SSA 32.15.02-A
Within the UK, an additional adapter cable is needed to
allow connection to the British Telecom Kilostream as
listed:
CLUSTER ENVIRONMENT (VMS only)
This layered product is fully supported when installed on
any valid and licensed VAXcluster* configuration without
restrictions. The HARDWARE REQUIREMENTS sections of this product’s Software Product Description and
System Support Addendum detail any specific hardware
required by this product.
BC22X-02
Note: The DSRVR has six 25-pin V.24/V.28 (RS232-D)
ports that do not need an adapter cable. The DSRVJ
has one 25-pin V.24/V.28 (RS232-D) port that does not
need an adapter cable.
Disk Space Requirements (Block Cluster Size = 1):
* V5.x VAXcluster configurations are fully described
in the VAXcluster Software Product Description
(29.78.xx) and include CI, Ethernet, and Mixed Interconnect configurations.
Disk space required for installation:
2,850 blocks
(1,425 Kbytes)
SOFTWARE REQUIREMENTS
Disk space required for use (permanent):
2,780 blocks
(1,390 Kbytes)
Disk Space Requirements — VMS
For each VMS System acting as a load host or dump
receiver:
VMS Operating System V5.0 - V5.4
DECnet-VAX V5.0 - V5.4 (either end-node or fullfunction)
Disk Space Requirements — ULTRIX
For VAX-Based and RISC-Based Systems:
Disk space required for installation:
For each VAX/ULTRIX System acting as a load host or
dump receiver:
Root file system:
/0 Kbytes
Other file systems:
Other file systems:
/usr 1,020 Kbytes (VAX)
/usr 1,110 Kbytes (RISC)
/var 0 Kbytes
ULTRIX Operating System V4.0 - V4.1
DECnet-ULTRIX V4.0
For each RISC/ULTRIX system acting as a load host or
dump receiver:
Disk space required for use (permanent):
ULTRIX Operating System V4.0 - V4.1
DECnet-ULTRIX V4.0
Root file system:
/0 Kbytes
Other file systems:
Other file systems:
/usr 1,010 Kbytes (VAX)
/usr 1,100 Kbytes (RISC)
/var 0 Kbytes
For each DOS System acting as a load host or dump
receiver:
For DOS Systems:
Disk space required for installation:
One of the following Operating systems:
COMPAQ DOS V3.31, V4.0, V4.01
DECstation DOS V3.3, V4.0
IBM DOS V3.3, V4.0
Olivetti DOS V3.3, V4.0, V4.01
Tandy DOS V3.30, V4.01
Toshiba DOS V3.3 (R3C90US), V4.01 (R4A15US)
Zenith DOS V3.3+, V4.0, V4.01
DECnet PCSA Client for DOS V3.0
PATHWORKS for DOS, V4.0
1,235 Kbytes
These counts refer to the disk space required on the
system disk. The sizes are approximate; actual sizes
may vary depending on the user’s system environment,
configuration, and software options.
OPTIONAL HARDWARE
Modems Supported
DEC DF03, DF112, and DF224
VMS Tailoring (VMS only)
Hayes® SmartModem 2400™
For VMS V5.x systems, the following VMS classes are
required for full functionality of this layered product:
CODEX 2233/2260
• VMS Required Saveset
• Network Support
3
DECrouter 250, Version 1.1
SSA 32.15.02-A
For ULTRIX Operating Systems on RISC:
For more information on VMS classes and tailoring, refer to the VMS Operating System Software Product Description (SPD 25.01.xx).
OPTIONAL SOFTWARE
Software
Software
Software
Software
None
For DOS Operating Systems:
GROWTH CONSIDERATIONS
Software
Software
Software
Software
The minimum hardware/software requirements for future versions of this product may differ from the requirements for the current version.
Licenses: QL-YG6A9-**
Media: QA-YG6AD-**
Documentation: QA-YG6AD-GZ
Product Services: QT-YG6*-**
Licenses: QL-YG6A9-**
Media: QA-YG6AC-**
Documentation: QA-YG6AC-GZ
Product Services: QT-YG6*-**
* Denotes variant fields. For additional information on
available licenses, services, and media, refer to the
appropriate price book.
DISTRIBUTION MEDIA
The above information is valid at the time of release.
Please contact your local Digital office for the most upto-date information.
For VAX or RISC systems, running VMS or ULTRIX,
acting as a load host:
Tape: TK50 Streaming Tape, 9-track 1600 BPI Magtape
®
Hayes is a registered trademark of Hayes Microcomputer
Products, Inc.
®
IBM is a registered trademark of International Business
Machines Corporation.
For VMS Load Host Systems:
This product is also available as part of the VMS Consolidated Software Distribution on CDROM.
®
For DOS systems, running MS-DOS, acting as a load
host:
COMPAQ and Deskpro are registered trademarks of
COMPAQ Computer Corporation.
®
Olivetti is a registered trademark of Ing. C. Olivetti.
Disk: RX24 Floppy Diskette, RX31 Floppy Diskette
®
Tandy is a registered trademark of Tandy Corporation.
®
Toshiba is a registered trademark of Kabushiki Kaisha
Toshiba.
®
MS-DOS is a registered trademark of Microsoft Corporation.
™
SmartModem 2400 is a trademark of Hayes Microcomputer Products, Inc.
™
The DIGITAL Logo, CI, DEC, DECnet, DECrouter,
DECstation, DECsystem, MicroVAX, MicroVMS, PATHWORKS, ThinWire, ULTRIX, VAX, VAXcluster, VAXft,
VAXmate, VAXserver, VAXstation, and VMS are trademarks of Digital Equipment Corporation.
ORDERING INFORMATION
For VMS Operating Systems:
Software
Software
Software
Software
Licenses: QL-YG6A9-**
Media: QA-YG6AA-**
Documentation: QA-YG6AA-GZ
Product Services: QT-YG6*-**
For ULTRIX Operating Systems on VAX:
Software
Software
Software
Software
Licenses: QL-YG6A9-**
Media: QA-YG6AB-**
Documentation: QA-YG6AB-GZ
Product Services: QT-YG6*-**
4
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement