Accession Number : AD0802211

Title :   BISTABLE ELEMENT SWITCHING STUDY.

Descriptive Note : Final rept. 25 Feb 65-25 Mar 66,

Corporate Author : SYLVANIA ELECTRONIC SYSTEMS-EAST NEEDHAM MASS

Personal Author(s) : Hallett,Joseph ; Gregazek,Henry ; Mednick,Ralph ; Kruger,Malcolm ; White,Mark

Report Date : OCT 1966

Pagination or Media Count : 275

Abstract : This study was performed to determine the most feasible method to switch data to a large bistable element display consisting of 10 to the 6th power discrete elements. The property of integral storage in discrete element displays will eliminate limitations on brightness which are common to nonstorage displays that require periodic refresh. The switching system performs in/out buffering, function generation, format control and conflict control under control of a sequencing and control subsystem. Three different approaches were analyzed. The first was based on using a general purpose computer, the second was based on a special purpose computer, and the third on using special 'black-box' hardware to perform the various functions. While each system has significant advantages of its own, the special purpose computer approach was determined to provide the greatest flexibility at low cost and fully satisfies performance objectives. Recommendations for further study include alternation of the basic bistable element structure to simplify conflict control, further investigation of computer simulation as a tool to match system requirements and display techniques, and the possible extension of the bistable element switching system concepts and techniques to nondisplay digital matrix arrays such as core memories used for special applications. (Author)

Descriptors :   (*SWITCHING CIRCUITS, *DISPLAY SYSTEMS), COMMAND AND CONTROL SYSTEMS, COMPUTER LOGIC, COSTS, CODING, MEMORY DEVICES

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE