【NEC】 NEC System 3100A Series

In October 1988, NEC announced the NEC System 3100A Series with enhanced network functionality.

As the successor series of the NEC System 3100 Series, the NEC System 3100A Series was offered as a product line suitable for building large-scale core business processing systems and distributed processing systems.

In the Model 60A and higher, the clock frequency of the IDP-2 32-bit processor was improved from 20megahertz to 25megahertz. The Model 30A and higher were shipped with high-speed cache memory as standard equipment, and the Model 40A,50A and 60A could connect additional high-speed magnetic disk (memory capacity: 290megabytes) with an access time of 18miliseconds. These improved processing performance of the Model 30A and higher by about 30percent over the 3100 Series. The Model 90A, which was added as the top-end machine, was the largest office computer (An office computer is a small business computer specialized in office operation) in Japan. It enabled connection of up to a maximum of 240 workstations, and had a maximum main memory capacity of 72megabytes and a maximum external memory capacity of 9.6gigabytes. The Model 90A enlarged the performance range of the series (from the top-end machine to the low-end machine) by 20 times.

NEC System 3100A Series Specifications
  Model 30A Model 40A Model 50A Model 60A Model 70A Model 80A Model 90A
Announced October 1988
Memory capacity 1-4MB 2-8MB 2-10MB 2-18MB 4-32MB 4-64MB 8-72MB
Magnetic disk 66/130
-
130/260MB
130MB
-
1.29GB
130MB
-
2.74GB
260MB
-
3.9GB
260MB
-
4.16GB
520MB
-
6.12GB
1.2
-
9.6GB
Cartridge magnetic
tape
30/83MB (External) 30/93MB (External, Built-in) 30/112MB (External, Built-in)
Cassette magnetic
tape
55MB
Number of
connected WS
4/8 14 24 36 60 120 240
Number of
communication lines
4 8 16 32 48 64
Communication
capacity
48,000
bps
96,000
bps
192,000
bps
288,000
bps
384,000
bps
Supported WS System 3100 Model 10, N5200 Series, PC-9800 Series
Cabinet dimensions
(WxDxH)mm
500 x 470 x 160 (Designed to stand on side) 180 x 680 x 650 240 x 680 x 650 400 x 680 x 700 700 x 760 x 1,000
LAN C&C-NET BRANCH4670II (1Mbps/4Mbps), BRANCH4680 (10Mbps)
OS ITOS-VX
Languages COBOL, COBOL85, FORTRAN, FORTRAN77, SMARTIIEX and others
Database ITOS-RDB
Integrated
office system
"Aladdin"
ITOS-IOS/BF4
OA software
package
LANPLAN, LANFILE5, LANGRAPH5, LANWORD5, LANDESK4, LANSTAT3, LANFORECAST3, LANMAP3, LANCABINET2, LANPHONE2, LANREPO

  
NEC System 3100A Series