[funsec] 3 April 1986: Happy Birthday, IBM Convertible

Fergie fergdawg at netzero.net
Sun Apr 2 22:59:18 CDT 2006

Okay -- so I post a couple of these every so often, when they're
especially humorous, important, revolting, or just plain silly. ;-)

And so I give you: The IBM Convertible.

Text via WIkipedia.


The IBM PC Convertible, released April 3, 1986, was IBM's first laptop computer and was also the first IBM computer to utilize the now-standard 3.5" floppy disk. Like modern laptops, it featured power management and the ability to run from batteries.

Also known as the IBM 5140, it utilized an Intel 80c88 CPU (a CMOS version of the Intel 8088) running at 4.77 MHz, 256 kB of RAM (expandable to 512 kB), dual 720 kB 3.5" floppy drives, and a monochrome CGA-compatible LCD screen at a price of $2,000. It weighed 13 pounds and featured a built-in carrying handle.

The PC Convertible had expansion capabilities through a proprietary ISA bus-based port on the rear of the machine. Extension modules, including a small printer and a video output module, could be snapped into place. The machine could also take an internal modem, but there was no room for an internal hard disk.



- ferg

"Fergie", a.k.a. Paul Ferguson
 Engineering Architecture for the Internet
 fergdawg at netzero.net or fergdawg at sbcglobal.net
 ferg's tech blog: http://fergdawg.blogspot.com/

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