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R > REGNECENTRALEN > RC 700 Piccolo     

REGNECENTRALEN  Regnecentralen
RC 700 Piccolo

Regnecentralen was a governmental agency founded in 1955 in order to build and run DASK (the first Danish computer), and for doing research in the computer field.

The RC 702 Piccolo (RC 700 was the series) was thus used by most schools in Denmark. It was equiped with a Z80A microprocessor, could be shipped with one or two built-in 5" floppy disc drive and ran CP/M.

The system supported CP/M and UCSD PASCAL, but was usually shipped with RC COMAL-80, a programming language which was used extensively in Danish schools for many years. COMAL was quite popular as a teaching language, especially in Scotland.


Pictures & info from Henrik Schmidt

We need more info about this computer ! If you designed, used, or have more info about this system, please send us pictures or anything you might find useful.


This was my first computer experience. The Comal 80 book had a gold-colored cover. The computer was used for our school''s administration and had two 8" floppy drives. (No 5" drive) I believe the floppy could hold 1Mb of data, ~900Kb formatted.

Friday 11th July 2014

We have made the website dedicated to the RC759 PICCOLINE and RC750 Partner (maybe PICCOLO in the future). On this website, one can download manuals and disk images, and an emulator for the system is also available. New information is frequently added.

We are very interested in getting more software and user manuals. If you have anything you think could contribute to the site, please let us know - we have the equipment to read floppy disks compatible with those systems, and try to rescue as much software as possible. See the Software section on the website for more information.

Tuesday 6th August 2013
Peter Haagerup (Denmark)

I learned the basics of my current IT job on this machine. You could install the spreadsheet Multiplan, the predecessor of Excel from Microsoft and use Wordstar as a text application. Also the CRT was with amber or green characters. When reading the floppy it made a loud ticking noise.

Thursday 9th September 2010


NAME  RC 700 Piccolo
MANUFACTURER  Regnecentralen
TYPE  Professional Computer
ORIGIN  Denmark
YEAR  1980
KEYBOARD  RC-721 full-stroke limited keyboard. An extended version with numeric keypad was also available
SPEED  4 Mhz
RAM  48 KB (expandable to 64 KB)
GRAPHIC MODES  A graphic expansion board could be installed (More info?)
COLOrsc  Monochrome
SOUND  Beeper
I/O PORTS  Monitor output, Keyboard connector, Parallel connector, Terminal & Printer serial (V24) connectors, External disk drive connector, Fuse, Monitor power
BUILT IN MEDIA  5.25'' floppy disk drive
Optional 8'' floppy disk drive
PERIPHERALS  RC-602 or RC-603 dot matrix printer
PRICE  About $3500



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