PC 1715

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PC robotron 1715
Mainboard of a robotron 1715
Keyboard controller
Adolescent at the PC 1715 on a GDR postage stamp from 1987 for MMM

The PC 1715 or robotron 1715 was after its introduction in 1985, the standard computer of the GDR in the 1980s. In addition, he was the SKR -Chiffre 1904 CM in the USSR and other CMEA exports -Staaten.

PC 1715 served a U880 - Chip 2.5  MHz as a processor , the same design as the processor Zilog Z80 was. (Another U880 was found in the associated keyboard as its controller.) The additional equipment included 64  KB RAM , 2 KB ROM and two floppy disk drives for 5.25- inch floppy disks , initially 160 KB each, and later devices - depending on the operating system - up to 800 KB storage capacity each.

The PC 1715 is a desktop PC with a case 50 cm wide, 40 cm deep and 14 cm high. The case, monitor and keyboard together weigh 12.8 kg. The separate keyboard consists of 98 keys according to the internationally standardized QWERTY keyboard layout with an additional number block and 15 function keys. A green monitor with a resolution of 64 × 16 or 80 × 24 characters is used for visual representation . There is no raster graphic . The computer does not have a hard disk , but has two built-in floppy drives that can be expanded by two external floppy drives. In practice, users use one drive for the software and the other for data storage. The manufacturer supplied a version of the CP / M operating system that was adapted to the hardware under the name SCP . Alternative operating systems were BROS and JAMB for compatibility with a Russian computer system. As a word processor provided Robotron TP, a duplicate of WordStar . The programming languages BASIC , Pascal , Assembler and Fortran as well as the database system Redabas (a dBASE -II copy) were available for user programming .

As the successor to the A 5120 , the robotron 1715 was software-compatible with its predecessor in terms of the user program. The manufacturer VEB Robotron Büromaschinenwerk “Ernst Thälmann” Sömmerda delivered the successor PC 1715W with a higher clock frequency (4 MHz), 256 KB RAM and version 3.0 of the SCP operating system from 1987 . The computer could not be purchased in retail stores, but only from state companies and authorities as well as from universities and technical schools. When settling the bill, the producer initially estimated 19,000 marks . 93,096 copies of the PC 1715 and PC 1715W had been produced by 1990, of which around 50,000 were exported to the Soviet Union.

Individual evidence

  1. ↑ Annegret Schüle: BWS Sömmerda: The checkered history of an industrial site in Thuringia 1816-1995 . DESOTRON Verlagsgesellschaft, Erfurt 1995, ISBN 3-9803931-1-9 .
  2. ↑ Claus Preußler, Klaus-Dieter Weise: Compilation of the computer technology products produced in the VEB Kombinat Robotron, Part 1: Computers and computer systems (p. 6/7). (PDF; 140 kB)

literature

  • Kombinat Robotron (ed.): Der Personalcomputer 1715. Verlag Die Wirtschaft, Berlin 1988, ISBN 3-349-00231-5 .

Web links

Commons : Robotron 1715  - Collection of Images, Videos and Audio Files