【NEC】 NEC System 3100

In May 1987, NEC announced the NEC System 3100, employing multiple processors.
As the successor of the VS Series, this product was designed to meet the need for faster and larger office computers(*). Newly developed technologies improved processing capacity by up to 2.4 times, communications capacity by 10 times, and LAN speed by 4 times compared to the VS Series.

*: Office computers are small business computers specialized in office operation.

Significant improvements in processing performance were achieved by using the IDP-2 32-bit processor (160,000 transistors—CMOS-VLSI) in all models, 4-way set-associative 8 kilobyte single-chip cache memory (μPD43608R—developed ahead of the world by NEC) in higher end models (Model 60 and higher), a multi-processor system (Model 60 and higher) for function distribution using OS processor, application processor, and I/O processor, which was the first time for machines in this class at the time, and 2 channels (Model 40 and higher) for disk access by improving system bus capacity (approx. 3 times that of the VS Series).
In terms of multimedia processing capabilities, these machines allowed connection of up to a maximum of 4 optical disks with a memory capacity of 3.6GB (enabling storage of approx. 80,000 A4 size documents), and this made it possible to process large volumes of multi-media documents.

NEC System 3100 Specifications
		Model 30	Model 40	Model 50	Model 60	Model 70	Model 80
Announced		May 1987
Memory capacity		1--4MB	1--6MB	2--10MB	2--18MB	4--32MB	4--64MB
Floppy disk		Floppy disk: 3.5" (1MB) (basic), 5" (1MB), 8" (1MB) max. 4 drives
Magnetic disk		66--132MB or 134--268MB	134-- 536MB	134-- 938MB	134MB-- 1.88GB	260MB-- 4.16GB	520MB-- 6.12GB
Cartridge magnetic tape		30MB type or 122MB type	30MB type/122MB type (can be mixed)
Magn- etic tape	1600/ 800BPI	-	1--2
Magn- etic tape	6250BPI (Stre- amer type)	-	-	1
Optic disk		-	3.6GB/drive x1--4
Max. number of connected WS		4	8	16	32	56	120
Max. number of communication circuits		4	8	16	32	48	64
Maximum communication capacity		48,000 bps		96,000 bps	192,000 bps	288,000 bps	384,000 bps
Cabinet dimensions (WxDxH)cm		50x47x16 (Designed to stand on side)	18x68x65	24x68x65		40x68x70
LAN		C&C-NET BRANCH4670(1Mbps), BRANCH4670II(4Mbps), BRANCH4680(10Mbps)
OS		ITOS-VX
Languages		COBOL, COBOL85, FORTRAN77, SMARTII
Database		ITOS-RDB
Integrated office system "Aladdin"		O
OA software package		LANPLAN4, LANFILE4, LANGRAPH4, LANWORD4, LANSTAT3, LANFORECAST3, LANMAP3, LANDESK4, LANFORM2, LANNOTICE2


NEC System 3100, Model 30~Model 80

Office Computers

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