Editing ES EVM (section)

== Hardware models and technical details ==
[[File:ES-1052 Control Unit.jpg|thumb|upright|ES 1052 Control Unit]]
The first subseries of the ES EVM, released in 1969–1978, included the models 1010, 1020, 1030, 1040, and 1050, which were analogous to the [[System/360]] and operated at 10–450 [[instructions per second|kIPS]], and the more rare and advanced versions, incompatible with the IBM versions: 1022, 1032, 1033 and 1052. The [[electronics]] of the first models were based on [[transistor-transistor logic|TTL]] circuits; the later machines used [[emitter coupled logic|ECL]] design. ES 1050 had up to 1M RAM and [[64-bit]] floating point registers. The fastest machine of the series, ES 1052, developed in 1978, operated at 700 kIPS.

The second subseries, released in 1977–1978, included the models 1015, 1025, 1035, 1045, 1055, and 1060, analogous to [[System/370]] and operated at 33 kIPS—1.050 [[instructions per second|MIPS]]. ES 1060 had up to 8M RAM.

The third subseries, released in 1984, were analogous to [[System/370]] with some original enhancements, and included 1016, 1026, 1036, 1046, and 1066. ES 1066 had up to 16M RAM and operated at 5.5 MIPS. The fourth subseries had no direct IBM analogs and included 1130, 1181, and 1220. The last machine in the series, ES 1220, released in 1995, supported a number of 64-bit CPU commands, 256M RAM, and operated at 7 MIPS, but was not successful; only 20 such machines were ever produced, and in 1998 the whole production of ES mainframes was stopped.

<gallery>
File:ESER EC 1055 TSD.JPG|ES 1055
File:EC5066, dyski 100Mb, ZSRR (I198003).jpg|ES 5066
File:EC 7186, PRL (I198003).jpg|ES 7186
File:EC 8607, CSRS (I198003).jpg|ES 8607
</gallery>