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Columbia Data Products

The Columbia MPC (for Multi Personal Computer) was the first exact copy of the young IBM PC. This desktop clone version will be followed few months later by a portable version designed by the new Compaq company.

Technically, there is nothing to say about this computer which hardware features are exactly the same as those of the IBM 5150. However, for about $1500 less, the MPC offered standard features that were optional on the IBM: 128 KB of RAM, two Serial one parallel ports and 8 ISA slots (versus the IBM-PC's five). The MPC's disk controller was integrated into the motherboard.

As IBM didn't well protect the PC hardware and BIOS software copyrights, this first clone will be followed by many others, desktops and portables version, manufactured in numerous countries by hundreds of independant companies, all over the world.

The Columbia company was sold in 1986 to a company based in Florida which kept the name and still exists.


Contributors: Joe Cassara.



My now deceased husband, Don Rein, worked for Columbia Data Systems in the early 80’s. He was able to do both hardware and software at the time, but mostly worked on the programming associated with the BIOS and ROM, I believe. I was just learning about all of it then. We had the version in our home that had two floppy drives (5 1/4) and no hard drive. I learned to program in Basic on these computers.

Tuesday 30th January 2018
Wife of Don Rein

I was the hardware engineer that designed the MPS. I have my original, hand drawn schematics.

Tuesday 12th December 2017
David Howse (Usa)

I worked for Bell $ Howell Co. in the 80''s and we were the national service provider for Columbia Data Products. I was based in Minneapolis and Control Data had hundreds of the 1600 series.
They were great IBM clones. Eagle was also a brand we serviced and while they were good computers they weren''t as good of a clone as CDP.
One of the things that killed CDP was that their production was pushed so hard, because of their popularity, that their out of box failure rate went up to about 25$. I know because Control Data would get pallets of them in and hot stage each unit before sending it to their end user and would call us with stacks of them to fix.

Wednesday 14th January 2015
Jodean Schoenberger (Minnesota USA)


MANUFACTURER  Columbia Data Products
TYPE  Professional Computer
YEAR  June 1982
KEYBOARD  Full-stroke 86 keys with function keys & numeric keypad
CPU  Intel 8088
SPEED  4.77 Mhz.
RAM  128 KB up to 1 MB
ROM  Unknown
TEXT MODES  40 or 80 columns x 24 lines (MDA or CGA modes)
GRAPHIC MODES  320 or 640 x 200 dots (CGA mode)
SOUND  Beeper
I/O PORTS  2 x Serial RS-232, 1 x Parallel Centronics, 8 x ISA slots
BUILT IN MEDIA  Dual 320 KB 5'' floppy disc drives
POWER SUPPLY  Built-in power supply unit
PERIPHERALS  all 8-bit PC expansion boards
PRICE  $3400 - 128k memory, 2 floppies and color CGA card
5 MB hard drive : $1700

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