June 1968 - Vol. 11 No. 6
Features
An implementation of Stiefel's exchange algorithm for determining a Chebyshev solution to an overdetermined system of linear equations is presented, that uses Gaussian LU…
Computer Systems: Reliable full-duplex file transmission over half-duplex telephone line
A field-proven scheme for achieving reliable duplex transmission over a half-duplex communication line is presented, and to demonstrate the difficulty of the problem,…
On the design of display processors
The flexibility and power needed in the channel for a computer display are considered. To work efficiently, such a channel must have a sufficient number of instruction…
Scientific Applications: BRAD: the brookhaven raster display
A multiconsole computer display system has been designed that provides very rich displays at low unit cost. Each BRAD (Brookhaven RAster Display) console can plot tens of…
An inexpensive braille terminal device
The active use of time-shared facilities for blind programmers requires a braille terminal system. Details are given for the construction of a brailler from a model 33…
Programming Techniques: Regular expression search algorithm
A method for locating specific character strings embedded in character text is described and an implementation of this method in the form of a compiler is discussed. The…
Writing an online debugging program for the experienced user
Presently available online debugging routines are often unsatisfactory for the experienced user because they require unnecessarily rigid and complicated typing formats,…
Standards: Heading format for data transmission (A USAAI) tutorial
This paper is for information purposes and is intended as a comprehensive thought-provoking collection of the major aspects and considerations influencing Heading Format…
A futures market in computer time
An auction method is described for allocating computer time that allows the price of computer time to fluctuate with the demand and the relative priority of users to be…