Accession Number : AD0676278

Title :   COMPUTER-AIDED INSTRUCTIONAL SYSTEM FOR TRANSMISSION LINE SIMULATION.

Descriptive Note : Technical rept.,

Corporate Author : TEXAS UNIV AUSTIN ELECTRONICS RESEARCH CENTER

Personal Author(s) : Reinhard,Erwin A. ; Roth,Charles H. , Jr

Report Date : 10 JUL 1968

Pagination or Media Count : 135

Abstract : A computer-aided instructional system has been developed which utilizes dynamic computer-controlled graphic displays and which requires student interaction with a computer simulation in an instructional mode. A numerical scheme has been developed for digital simulation of a uniform distortionless transmission line with resistive terminations and arbitrary voltage sources at either or both ends of the line. The numerical transient and steady-state solution is exact independent of the number of spatial increments used to simulate the transmission line. The numerical solution provides data for an on-line CRT display unit which permits visual observation of the space-time dynamic behavior of the voltage and current waves. A computer-controlled audio tape recorder, a special keyboard, and special software for dynamic scope displays and for lesson programming have been developed as part of the instructional system. This system permits student interactions with a computer programmed lesson and associated laboratory simulations to create learning experiences which cannot be duplicated in the classroom or laboratory. The student interacts with the lesson by responding to multiple choice inquiries, by controlling the simulations, by making qualitative measurements of the dynamic variables directly on the scope face, and by constructing responses for subsequent judging by the computer. Two programmed lessons on transmission lines, each requiring about 45 minutes of student time, have been prepared and tested. (Author)

Descriptors :   (*TRANSMISSION LINES, *PROGRAMMED INSTRUCTION), (*DIGITAL COMPUTERS, PROGRAMMED INSTRUCTION), INTERACTIONS, SIMULATION, TRANSIENTS, CATHODE RAY TUBES, INPUT OUTPUT DEVICES, COMPUTER PROGRAMMING

Subject Categories : Humanities and History
      Electrooptical and Optoelectronic Devices
      Computer Programming and Software
      Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE