IBM 5140 Convertible Computer

The IBM 5140 (or IBM PC Convertible) was a laptop that could be converted into a main desktop in seconds.  It was the first battery-powered laptop released by IBM.

The LCD screen detaches for a color CRT to be attached. IBM didn't sell many of these due to the fact the LCD was not backlit, and the competition was less expensive.

The IBM 5140 was available in two models, the 2 and the 22; the only difference being the 22 came with diagnostics software. IBM saw little success from this machine due to high costs, slow processor at 4.77 MHz, hard to read screen, and cumbersome size. Both models were expandable to 640KB RAM with third party upgrades.

Manufacturer: IBM
Date: April 1986

Other Systems Related To IBM 5140 Convertible Computer:

Item Manufacturer Date
IBM System 370 Control Panel IBM 1970
IBM 370/138 IBM 30th June 1976
IBM Displaywriter IBM 1980
IBM 5161 IBM 1981
IBM 5150 IBM 1st September 1981
IBM 5160 XT IBM 1st January 1983
IBM 5170 IBM 1984
IBM 5155 Portable Computer IBM 1st June 1984
IBM PS/2 Model 70 IBM 1987
IBM PS/2 Model 30 IBM April 1987
IBM PS/2 Model 80 (8580-071) IBM 2nd April 1987
IBM PS/2 Model 50 (8550) IBM October 1987
IBM PS/1 IBM 1990
IBM RS/6000 Model 550L IBM 1990
IBM PS/1 Machine 2133 Model 114 IBM 1990
IBM Model 8573-121 IBM January 1990
IBM RS/6000 320 IBM 15th February 1990
IBM PS/2 Note IBM 1991
IBM PS/2 Model 95 (8595) IBM 1991
IBM ThinkPad 2523-710T IBM 1993
IBM ThinkPad 701CS IBM 1995
IBM ThinkPad 755CEX IBM March 1995
IBM RS/6000 SP2 Type 7025 IBM 1996
IBM ThinkPad 365XD IBM 1996
IBM RS/6000 Model 7043 604e IBM 1998
IBM 8363 NetVisa Thin Client IBM November 2000
IBM ThinkPad R30 2656 IBM 2001
IBM Thinkpad 2628-STG IBM 2001

This exhibit has a reference ID of CH1978. Please quote this reference ID in any communication with the Centre for Computing History.

 

IBM 5140 Convertible Computer


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