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A Multiple Procedure DDT
(1968-01-01)
This Memo. Describes a version of DDT used as the command level of the A.I. Group PDP-6 Time Sharing System (ITS). Special features include capability to handle multiple jobs, ability to stop open read or write references ...
Focusing
(1968-05-01)
This memo describes a method of automatically focusing the new vidisector (TVC). The same method can be used for distance measuring. Included are instructions describing the use of a special LISP and the required LISP-functions. ...
Holes
(1968-08-01)
This memo originally had two parts. The first dealt with certain deficiencies in an early version of Guzman's program, SEE. The problems have been fixed, and the corresponding discussion has been dropped from this ...
PEEK and LOCK
(1968-11-01)
This memo describes two small utility programs that are of assistance in using the ITS 1.4 (see A.I. 161, MAC-M-377) time sharing system. LOCK performs miscellaneous utility functions while PEEK displays, with periodic ...
Remarks on Visual Display and Console Systems
(1968-06-01)
This serves as a preliminary draft of Deluxe Picture Maintenance System, June, 1963. It is Technical Memorandum No. 1.
SARGE: A Program for Drilling Students in Freshman Calculus Integration Problems
(1968-03-01)
The SARGE program is a prototype of a program which is intended to be used as an adjacent to regular classroom work in freshman calculus. Using SARGE, students can type their step-by-step solution to an indefinite ...
REEX: A CONVERT Program to Realize the McNaughton-Yamada Analysis Algorithm
(1968-01-01)
REEX is a CONVERT program, realized in the CTSS-LISP of Project Mac, for carrying out the McNaughton-Yamada analysis algorithm, whereby a regular expression is found describing the words accepted by a finite state machine ...
A Left to Right then Right to Left Parsing Algorithm
(1968-02-01)
Determination of the minimum resources required to parse a language generated by a given context free grammar is an intriguing and yet unsolved problem. It seems plausible that any unambiguous context free grammar could ...
Producing Memos, Using TJ6, TECO and the Type 37 Teletype
(1968-09-01)
This memo describes the TJ6 type justifying program, which can be used in the production of memos, such as this one. In addition, sections III and IV of this memo contain related information about TECO and the type ...
Numerical Solution of Elliptic Boundary Value Problems by Spline Functions
(1968-04-01)
A numerical method for solving linear, two-dimensional elliptic boundary value problems is presented. The method is essentially the Ritz procedure which uses; polynomial spline functions to approximate the exact solution. ...