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Toshiba T3100

Developer	Toshiba Tetsuya Mizoguchi Haruhiko Banno Yasuo Suzuki[1]: 172
Manufacturer	Toshiba
Product family	Toshiba T series
Type	Laptop
Release date	1986; 39 years ago (1986)[2]
Operating system	MS-DOS 3.2[2]
CPU	Intel 80286 @ 8 MHz[2]
Memory	640 KB RAM (upgradable to 2.6 MB)[2]
Storage	10 MB hard drive; internal 3.5" floppy drive, 720 KB; connector for external 5.25" floppy drive, 360 KB[2]
Display	monochrome 9.5" orange gas-plasma display[2]
Graphics	640×400; 640×200; Textmode: 80×25; T3100SX: 640x480 VGA
Input	keyboard - 83 keys, QWERTY
Connectivity	external monitor via 9-pin RGB port[2]
Dimensions	31.0 x 36.1 x 7.9 cm[2]
Weight	7.5 kg (17 lb)

The Toshiba T3100 is a discontinued portable PC manufactured by Toshiba released in 1986. It features a 10 MB hard drive, 8 MHz Intel 80286 CPU and a black & orange 9.5" gas-plasma display with a resolution of 640 × 400 pixels.^[2]

The portable has a special high-resolution 640 × 400 display mode which is similar to and partially compatible with the Olivetti/AT&T 6300 graphics.^[2] The base model has 640 KB memory. There is a single proprietary expansion slot for 1200 bit/s modem, expansion chassis for 5x 8-bit ISA cards, Ethernet NIC, 2400 bit/s modem, and a 2 MB memory card (thus 2.6 MB in max total).^[2] T3100e model has 1 MB of memory, which can be upgraded to 5 MB.^[3][4]

Toshiba T3100 is not a true portable, because it needs an external power source in all except the last version.

Five versions exist:

• The T3100/20 is essentially the same as the base T3100 but with a larger hard drive (20 MB instead of 10 MB).
• The T3100e has a 12 MHz 80286 CPU (switchable to 6 MHz), 1 MB RAM and a 20 MB hard drive.^[5]
• The T3100e/40 is the same as the T3100e, but with a larger 40 MB hard drive.
• The T3100SX has a 16 MHz i386SX CPU, 1 MB RAM and a 40 MB or 80 MB hard drive, a VGA 640 × 480 × 16 shade black & orange gas plasma display or black & white LCD, and also included an internal rechargeable battery, for true portability.^[6]
• The J3100 is a version of the T3100 that was marketed and sold in Japan only.

BYTE in 1989 listed the T3100/20 as among the "Distinction" winners of the BYTE Awards, citing its "amazingly clear" display and hard drive.^[7]

• Toshiba T1200
• Toshiba T1100
• Toshiba T1000

• Computer Museum article on the Toshiba T3100 Archived 2011-02-22 at the Wayback Machine
• Toshiba Science Museum on laptops
• Toshiba brochure