Accession Number:

AD0671125

Title:

GRAPHICS

Descriptive Note:

Semiannual technical summary rept. 1 Dec 1967-31 May 1968

Corporate Author:

MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB

Personal Author(s):

Report Date:

1968-05-31

Pagination or Media Count:

36.0

Abstract:

The LEAP system has been modified to provide for merging current and previously saved data structures and incorporation of a sublanguage for communicating with the interrupt executive. Breakpoint trapping facilities have been used for running programs in single-step mode, program-timing experiments, and in providing variable response delays for human factors studies. AMBITG, a programming language for manipulating directed graphs, is being implemented using LEAP and the interactive graphics facilities of TX-2. A first set of working semiconductor circuits has been made from masks generated via TX-2 programs. A written-input version of the mask-generation program has been used to produce masks for a Read-Only Memory design. In addition, the laboratory service facility is now using this program for almost all of its hybrid circuit mask layout jobs. Work has continued on computer-aided circuit testing with the addition of new features to the TIC terminal and the development of procedures for diagnosing single-gate failures in complex arrays. Experiments are planned for evaluating a TV display buffered by the film memory soon to be installed in TX-2. Modifications to the conic generator will be shortly which should eliminate the generator limitations on drawing speed. Further theoretical work continues on constraint systems and the application of homomorphic filtering to picture processing.

Subject Categories:

  • Electrical and Electronic Equipment
  • Computer Programming and Software
  • Computer Hardware
  • Computer Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE