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Saturday, June 13, 2009

Toshiba T1000

Toshiba T1000Although there were efforts to make a portable computer.But this socalled portable computer were large and draggable(atleast 10-20kg).Toshiba T1000 at first change this portable concept-with 2.9kg,slim look,faster processor(80c88)-Yet there was250k rom in place of hard disk



The Toshiba T1000 was a laptop computer manufactured by the Toshiba Corporation in 1987.

Toshiba T1000 front view
It had a similar specification to the IBM PC Convertible, with an 4.77MHz 8OC86TM processor, 512kb of RAM, and a monochrome CGA-compatible LCD. Unlike the Convertible, it includes a standard serial port and parallel port, connectors for an external monitor, and a real-time clock.



toshiba T1000 closed

Unusually for an IBM compatible PC, the T1000 contained a 256 kB ROM with a copy of MS-DOS 2.11. This acted as a small, read-only hard drive. Alternative operating systems could still be loaded from the floppy drive, or (if present) the ramdisk.

Alongside the earlier T1100 and T1200 systems, the Toshiba T1000 helped to change the image of portable computing. Before the T1100, previous supposedly portable computers were large and unwieldy (the term draggable may be more appropriate).



T1000 specification

Dimensions

12.2" W × 11.0" D × 2.05" H (310 × 280 × 52 mm)

Power

9 VDC, 1.1A (+ = core; - = shell)

Weight

6.4 lbs (2.9 kg)

Video

CGA card

Sound

PC speaker

Battery

Rechargeable NiCd pack (1300 mAh)

Media

1 - 720 3.5" floppy disk drive

Mouse

None

Keyboard

Selectable between PC or AT (101)






Processor
8OC88/4.77 MHz

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Memory
512 KB

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Floppy-disk drives
1 built-in 3.5" diskette drive, 720 KB
A second external 3.5" diskette drive,
720 KB or 5.25" floppy-disk drive,
360 KB can be connected

-------------------------------

Keyboard
82 keys, compatible with IBM PC

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Display
Supertwist display
80 characters x 25 lines
Graphics 640 x 200 dots or
320 x 200 dots
Swivel-mounted up to 180o

-------------------------------

Interfaces
RS232C serial
Centronics parallel (printer)
Colour display (RGB)
Composite video
External diskette drive

-----------------------------

Operating system
MS-DOS 2.11

----------------------------

Measurements
310 x 280 x 52 mm (W x D x H)

-----------------------------

Weight
2.9 kg

------------------------------

Power supply
Built-in rechargeable NiCad batteries
AC adap
ter/charger

AC adapter/charger



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