ESER is an abbreviation for Einheitliches System Elektronischer Rechenmaschinen (German

German language

German is a West Germanic language, related to and classified alongside English and Dutch. With an estimated 90 – 98 million native speakers, German is one of the world's major languages and is the most widely-spoken first language in the European Union....

 for standardized system of electronic computers), a term used in the GDR for ES EVM

ES EVM

ES EVM was a series of clones of IBM's System/360 and System/370 mainframes, released in the Comecon countries under the initiative of the Soviet Union since the 1960s. Production continued until 1998...

 computers produced according to a treaty between the members of Comecon

Comecon

The Council for Mutual Economic Assistance , 1949–1991, was an economic organisation under hegemony of Soviet Union comprising the countries of the Eastern Bloc along with a number of communist states elsewhere in the world...

 signed on December 23, 1968 covering the development of a standardized computing system.

ESER was also the name for computers developed by this standard. Most ESER Computers were named ЕС (which is Cyrillic for "ES") followed by a four digit number, e.g., EC 1055, often also called ESER (e.g., ESER 1055). Robotron

Robotron

VEB Kombinat Robotron was the biggest East German electronics manufacturer. It was based in Dresden and employed 68,000 people . It produced personal computers, SM EVM minicomputers, the ESER mainframe computers, several computer peripherals as well as home computers, radios and television...

 also produced minicomputer

Minicomputer

A minicomputer is a class of multi-user computers that lies in the middle range of the computing spectrum, in between the largest multi-user systems and the smallest single-user systems...

s, whose names started with "K" (Kleinrechner for "minicomputer").

GDR manufacturing

• Robotron
  Robotron
  VEB Kombinat Robotron was the biggest East German electronics manufacturer. It was based in Dresden and employed 68,000 people . It produced personal computers, SM EVM minicomputers, the ESER mainframe computers, several computer peripherals as well as home computers, radios and television...
  
  
  • EC 1834, 1835 (IBM PC
    IBM PC
    The IBM Personal Computer, commonly known as the IBM PC, is the original version and progenitor of the IBM PC compatible hardware platform. It is IBM model number 5150, and was introduced on August 12, 1981...
    
     XT compatibles)
  • EC 1040, 1055, 1055M, 1056, 1057
  • EC 7927
  • K 1001, 1002, 1003, K 1510, K 1520, K 1820, K 5103, K 5201, K 8913, K 8915, K 8924
  • CM 1910

Hungarian manufacturing

• Videoton
  Videoton (company)
  Videoton is a privately owned Hungarian company, Contract Electronics Manufacturer , the largest independent Electronic Manufacturing Services provider in the CEE region, in TOP 30 worldwide, TOP 10 in EU according to the latest ranking of...
  
  
  • EC 1010, 1011, 1012

The ESER systems were in operation in GDR until 1995.

External links

• technical data of some ESER computers by Robotron
  Robotron
  VEB Kombinat Robotron was the biggest East German electronics manufacturer. It was based in Dresden and employed 68,000 people . It produced personal computers, SM EVM minicomputers, the ESER mainframe computers, several computer peripherals as well as home computers, radios and television...
  
  
• technical data of some ESER computers by Videoton
• some photos of a ESER Mainframe
• PDF! On Page 6 is an Overview of different ESER Mainframes in German
• Overview of different ESER Computers in Russian (with pictures)