Toshiba T1100 Plus

The T1100 Plus improved Toshiba’s pioneering laptop with a faster 80C86 processor, 640 KB of memory and a revised storage arrangement while retaining its monochrome clamshell display.

It refined the practical PC-compatible laptop before Toshiba introduced models with internal hard disks and removable batteries.

Notable Features

• 7.16 MHz low-power 8086
• 640 KB standard memory
• Dual-floppy configurations and expansion options

Historical Significance

• It refined the practical PC-compatible laptop before Toshiba introduced models with internal hard disks and removable batteries.

Collector’s Notes

• Floppy mechanisms, batteries and proprietary expansion hardware are common restoration concerns.
• Memory, storage, displays and expansion hardware should be documented because configurations often changed during a system’s working life.

Specifications

Technical Information
Name	Toshiba T1100 Plus
Manufacturer	Toshiba
Launched	Wednesday, January 1, 1986
Country	Japan
CPU	Intel 80C86
Units Sold
Form Factor	Laptop
Power	Rechargeable battery or AC adapter
Networking	Optional through expansion
Operating System	MS-DOS
Expansion / I/O	Serial, parallel, external display and expansion connector
Keyboard	Full-travel integrated keyboard
Storage	Two 720 KB 3.5-inch floppy drives on common configurations
Sound	PC speaker
Colours	Monochrome internal; external colour
Graphics	CGA-compatible 640 x 200 pixels
Display	Monochrome LCD
ROM	Toshiba PC-compatible BIOS
RAM	640 KB
CPU Speed	7.16 MHz