MIT Libraries homeMIT Libraries logoDSpace@MIT

MIT
View Item 
  • DSpace@MIT Home
  • Computer Science and Artificial Intelligence Lab (CSAIL)
  • Artificial Intelligence Lab Publications
  • AI Memos (1959 - 2004)
  • View Item
  • DSpace@MIT Home
  • Computer Science and Artificial Intelligence Lab (CSAIL)
  • Artificial Intelligence Lab Publications
  • AI Memos (1959 - 2004)
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

The TV Turtle: A Logo Graphics System for Raster Displays

Author(s)
Lieberman, Henry
Thumbnail
DownloadAIM-361.ps (963.0Kb)
Additional downloads
AIM-361.pdf (688.4Kb)
Metadata
Show full item record
Abstract
Until recently, most computer graphics systems have been oriented toward the display of line drawins, continually refreshing the screen from a display list of vectors. Developments such as plasma panel displays and rapidly declining memory prices have now made feasible raster graphics systems, which instead associate some memory with each point on the screen, and display points according to the contents of the memory. This paper discusses the advantages and limitations of such systems. Raster systems permit operations which are not feasible on vector displays, such as reading directly from the screen as well as writing it, and manipulating two dimensional areas as well as vectors. Conceptual differences between programming for raster and vector systems are illustrated with a description of the author's TV Turtle, a graphics system for raster scan video display terminals. This system is embedded in Logo, a Lisp-like interactive programming language designed for use by kids, and is based on Logo's turtle geometry approach to graphics. Logo provides powerful ideas for using graphics which are easy for kids to learn, yet generalize naturally when advanced capabilities such as primitives for animation and color are added to the system.
Date issued
1976-06-01
URI
http://hdl.handle.net/1721.1/5773
Other identifiers
AIM-361
Series/Report no.
AIM-361

Collections
  • AI Memos (1959 - 2004)

Browse

All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

My Account

Login

Statistics

OA StatisticsStatistics by CountryStatistics by Department
MIT Libraries homeMIT Libraries logo

Find us on

Twitter Facebook Instagram YouTube RSS

MIT Libraries navigation

SearchHours & locationsBorrow & requestResearch supportAbout us
PrivacyPermissionsAccessibility
MIT
Massachusetts Institute of Technology
Content created by the MIT Libraries, CC BY-NC unless otherwise noted. Notify us about copyright concerns.