Educational computer robotron A 5105

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Educational computer robotron A 5105
K1505.jpg
Manufacturer Germany Democratic Republic 1949GDR VEB Robotron measurement electronics "Otto Schön" Dresden
Type Home computers , learning computers
publication July 1989
End of production April 1990
Factory price 11,000.00 M
3,000.00 M as ALBA PC 1505
processor U880 @ 3.75 MHz
random access memory 64 KB
graphic U82720 ;
  • 25 × 40 characters
  • 25 × 80 characters
  • 16 foreground colors
  • 8 background colors
  • 320 × 200 pixels × 4 colors out of 16 colors
  • 640 × 200 pixels × 4 colors out of 16 colors
  • 320 × 200 pixels × 16 colors
Sound 3 channels, 8 octaves
Disk Cassette, floppy disk, module
operating system SCPX 5105, compatible with SCP (or CP / M )
predecessor Z9001

The educational computer robotron A 5105 (BIC A 5105 for short) was developed by VEB Robotron-Meßelektronik "Otto Schön" Dresden in the GDR from January 1987 and was mass-produced from July 1989. It was intended for training in computer science at general schools, in vocational training and at universities and technical colleges. The development became necessary because the small computers KC 85 / 2-4 and KC 87 did not meet the requirements for training. By the time production was discontinued in April 1990, around 5,000 computers had been manufactured. Of this, around 3,000 units were sold to customers in the education sector at an initial price of around 11,000 M , which fell to 3,000 M by the end of the deliveries.

A5105 including basic module

Since the use of the BIC A 5105 in the education system of the unified Germany was not intended, the remainder of the hardware and software components produced were sold directly by the manufacturer as consumer goods under the name ALBA PC 1505. Around 2,000 ALBA PCs had been sold by mid-1990. Efforts to market the ALBA-PC after the monetary, economic and social union also in the unified Germany and in western foreign countries remained without any notable commercial success.

Technical specifications

Processor: UA880D
Clock frequency: 3.75 MHz
Storage: 48 KByte ROM with BASIC operating system ; 64 KByte RAM ; 128 KByte video memory
Data storage:
Monitor:
  • 12 inches monochrome;
  • Color TV at RGB input; TV via optional RF modulator
Display:
  • 25 × 40 characters
  • 25 × 80 characters
  • 16 foreground colors
  • 8 background colors
  • 320 × 200 pixels × 4 colors out of 16 colors
  • 640 × 200 pixels × 4 colors out of 16 colors
  • 320 × 200 pixels × 16 colors
  • Video controller: U82720
Sound: 3 channels; 8 octaves
Interfaces:
Software: RBASIC in ROM; SCPX 5105 as RAM operating system; fully compatible with the SCP ( CP / M -Clone) of the Robotron PC 1715
Dimensions: Device 390 mm × 200 mm × 50 mm; Disk storage unit 390 mm × 400 mm × 135 mm

After the production facilities for the plastic housing of the basic computer device were sold to VEB Mikroelektronik Mühlhausen for 1 million M at the end of 1989, the same housing with a very good keyboard (but not the same electronics) could also be used for the KC compact and an optional additional keyboard for the KC 85 / 2-4 can be used.

literature

Web links

Individual evidence

  1. ↑ Klaus-Dieter Weise: product line home computers, small computers and educational computers of the VEB Kombinat Robotron. UAG History Robotron of the Computer Technology Working Group in the Technical Collections Dresden , Dresden 2005, p. 71–73 ( foerderverein-tsd.de [PDF; 401 kB ]).