OPERATIONS CONTROL UNIT IN A SPECIAL PURPOSE DIGITAL CONTROL COMPUTER,
Abstract
A list of instructions to be realized by the computer serves as initial data for designing the control unit which comprises a clock-pulse unit, a micro-operation control circuit, and an operation decoder. The clock-pulse unit produces pulses and sequentially distributes them among its trunks. The control circuit handles microprograms consisting of 38 micro operations (a 10-cycle microprogram table is shown). Ferrite-core circuits are used throughout. The control unit operates on a two-cycle principle (a read cycle for one group of cores serves simultaneously as a preparatory cycle for another group). The micro-operation control circuit comprises 5 core groups. The operation decoder is built on a two-step principle; first-step cores perform logical multiplication of the first three variables X1X2X3 of the operation; second-step cores, multiplication of the remaining two variables X4X5. The clock frequency can go as high as 30 kc; pulse height, 0.4 amp; pulse duration, 8 microsec. The above control unit exhibited reliable operation in conjunction with a laboratory model of a small-size control digital computer.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 20, 1968
- Accession Number
- AD0683274
Entities
People
- A. T. Novikov
- K. N. Guk
- L. V. Sadovskii
- V. S. Kossovskii
Organizations
- National Air and Space Intelligence Center