PUNCHED-TAPE DATA INPUT UNIT WITH CIRCUITAL CONVERSION OF NUMBERS.
Abstract
The article describes an input device developed for entering information from punched tape in the working storage of a special-purpose computer and providing circuit decimal-to-binary conversion. The device employs series-produced ferrite-diode magnetic elements. Numbers are recorded on the punched tape in the code of the ST-35 apparatus. The conversion scheme is based on an algorithm using a table of constants. The conversion represents the serial addition of multiple constants. There is an intermediate converter from the ST-35 code to binary decimal code. The article gives a block diagram of the input device, as well as a detailed description of its basic circuit. The circuit speed permits the entry of 1,000 bits (rows) per second, which makes it possible to use it with the photoelectric method of punched tape reading. 156 elements are used to construct the device, including 64 logical and 92 simple elements. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 21, 1967
- Accession Number
- AD0660730
Entities
People
- N. B. Bekir-zade
- Yu. A. Makhmudov
Organizations
- National Air and Space Intelligence Center