website/content/museum/isot-ec-1035.md

title, categories, types, origins, years, cpus, params

title	categories	types	origins	years	cpus	params
ISOT EC-1035	Computers	Professional Computer	Bulgaria	1977	ES-2635	name image company company_name specs tabs forum_thread photos hardware oc_id source EC-1035 /media/museum/photos/isot_ec1035_system_s1.jpg /companies/isot ISOT label value NAME EC-1035 label value MANUFACTURER ISOT label value TYPE Professional Computer label value ORIGIN Bulgaria label value YEAR 1977 label value END OF PRODUCTION Unknown label value BUILT IN LANGUAGE None label value KEYBOARD Terminal keyboard label value CPU ES-2635 (?) label value SPEED 160 000 operations per second label value RAM 256 to 512 KB. 16 MB virtual memory max. label value ROM BIOS in ROM, size unknown label value TEXT MODES Depends on the terminal used label value GRAPHIC MODES Graphic capabilities with some ISOT video terminals label value SIZE / WEIGHT 100 square meters! label value BUILT IN MEDIA Magnetic tapes. Recording speed of 120 KB per sec. label value OS ES-DOS dedicated O.S. label value POWER SUPPLY Tree-phase current - 220/380V 100A label value PERIPHERALS I/O Multiplexer ISOT 8401 for serial and Parallel peripherals photos hardware 952 title subtitle text image ISOT BROCHURE /media/museum/photos/isot_ec1035_pub_s1.jpg title subtitle text image OTHER ISOT SYSTEMS ISOT also made several 8-bit and 16-bit desktop computers, among them:\ • **1030C** 8086 based CAD system\ • **1031C** Z80 - CP/M system\ • **1039C** (also named CM-4) 16-bit multitasking system\ • **1036C** PC compatible system based on the Bulgarian CM688 processor, compatible with the Intel 8088. Here pictured with the **ISOT 6305C** 132-col. 150 cps dot-matrix printer. Thanks to **Bojidar Stefanov** /media/museum/photos/isot_pcsystem_s1.jpg title subtitle text image ISOT 8015 MODEM 4800-baud modem which was connected to several Bulgarian mainframes. Thanks to **Bojidar Stefanov** /media/museum/hardware/isot_ec1035_modem_s1.jpg 978 url date https://web.archive.org/web/20230510155754/http://www.old-computers.com/museum/computer.asp?c=978 2023-05-10

Very little information about this Bulgarian mainframe used by big East European companies as an industrial or information management system.

It was partially compatible with IBM mainframe and could also share programs and data with the russian Minsk-32. It could run in multiprogram mode thanks to its virtual memory.

The ISOT brand name means 'State Economic Alliance'

Thanks to Bojidar Stefanov for information and picture.

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.