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General-Purpose Automatic Digital Computer 'Ural-11'

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The general-purpose electronic digital computer "Ural-11" is designed for solving factory planning, accounting, statistical and other problems involving reception, storage, processing and presentation of numeric and alphabetic information, and also for operation in automatic data processing systems.

The "Ural-11" is available in several versions: "Ural-11А", "Ural-11Б", "Ural-11В", "Ural-11Г", "Ural-11Д", "Ural-11Е". Each version consists of a different set of functional units and is intended for a concrete range of applications.

The "Ural-11" computers can be employed at individual factories and other enterprises for the following purposes:

The computers "Ural-11" can be efficiently used in the following spheres:

With a required set of functional units, the computers "Ural-11" can be employed for production monitoring by periodic measurement and recording of process variables, and also for direct process control by processing information supplied by the transducers in accordance with a preset algorithm, and acting upon on-off, proportional and other controllers.

The computers "Ural-11" are applicable in research institutes, design bureaus, colleges and universities for solving engineering problems and analysis of experiment results, with data read into the computer either directly or with the aid of magnetic or punched tape.

The computers "Ural-11" belong to a set of semi-conductorized electronic digital computers "Ural" of identical design and construction, with identical information input, storage and output devices, employing the same input and output alphabet and the same codes for handling information on punched cards, punched tape and in the computer.

The computer "Ural-11" can operate in a data processing system which incorporates electronic digital computers "Ural-16", "Ural-14" and "Ural-11" connected directly or through transmission channels. Information stored on punched cards, magnetic tape and punched tape in the course of operation of the "Ural-11" can be directly handled by the computers "Ural-14" and "Ural-16".

The features of the computers "Ural-11" are as follows:

The standard equipment of the computer "Ural-11" incorporates the following devices (in various combinations and quantities):

The computer "Ural-11" is available in several versions with different sets of functional units. The capacity of each version can be increased to suit individual requirements, by the addition of units delivered to special order. In any version, provisions are made for connection of all the units.

Basic Specifications Of Computer "Ural-11"

Representation of numbers fixed point; input, storage, processing and output of alphanumeric information
Number of binary digits 24 and 12
Number base binary and decimal
Instruction type single-address
Number of instructions 124
Number of index registers 7
Number of interrupt channels 30
Computation speed, operations/sec:  
  addition, subtraction and logical operations up to 50000
  multiplication 350 (24X24 without multiplier У-340)
14000 (24X24 with multiplier У-340)
25000 (24X12 with multiplier У-340)
  floating-point addition and subtraction (mantissa-24, order-12 digits) 1000
  floating-point multiplication 330
  decimal addition and subtraction 12000 (5-digit words with decimal adder У-342)
5000 (11-digit words with decimal adder У-342)
Storage capacity, 24-digit words:  
  ferrite store 4096-16384
  unidirectional store 1024-8192
  magnetic drum store 98000-399000
  magnetic tape store 1000000-8000000
Speed of information exchange with transmission channels and other conjugate devices, 24-digit words/sec 100000
Speed of input/output of information from/onto magnetic tape:  
  24-digit words/sec 5300
  decimal digits/sec 32000
Speed of information input, decimal digits/sec:  
  from punched cards 1800
  from punched tape 1000
Speed of information output, decimal digits/sec:  
  onto punched cards 150
  onto punched tape 80
Speed of information input from punched cards, cards/min 700
Speed of information output onto punched cards, cards/min 100
Speed of information output to printing devices, 128-digit lines/min 400
Speed of information output to printing devices, characters/sec 800
Power consumption (depending on version), kVA >=4
Operating conditions:  
  ambient temperature, °C +5 to +40
  humidity, % 65±15
Floor space (depending on version), m2 >=(30 to 40)

The basic specifications of the computers "Ural-14" and "Ural-16" are as follows:

  "Ural-14" "Ural-16"
"Ural-14" Representation of numbers fixed point fixed and floating point
Number of binary digits 24 48
Computation speed, microsec:    
  addition and logical operations 22 (24 digits) 10 (48 digits)
  multiplication 300 (24 digits) 30 (48 digits)
  floating-point addition 1000 (23; 7) 10 (39; 7)
  floating-point multiplication 1000 (23; 7) 30 (39; 7)
Storage capacity, 24-digit words:    
  ferrite store <= 65536 <=131072
  magnetic drum store <=400000 <=400000
  magnetic tape store <=16000000 <=32000000
Operating conditions:  
  ambient temperature, °C +5 to +40
  humidity, % 65±15
Construction circuit assemblies in standardised packaged units and elements of "Ural-10"
Standard equipment variable set of functional units; identical data input, output and storage facilities
Peculiar features simultaneous handling of many problems; simultaneous operation of up to 24 input and output units, stores and arithmetic unit. Programs are independent of their position in stores. Address protection circuits, monitoring of data storage, transmission and processing. Variable-length words are handles. Multi-channel program interrupt and stop facility (up to 64 interrupt channels). Remote control operator's panels can be connected
Data input from punched cards, punched tape, magnetic tape, transmission channels and continuous signal transducers
Data output onto punched cards, punched tape, magnetic tape, transmission channels, controllers, printers and automatic recorders
Started by Eduard Proydakov in 1997
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