Accession Number : AD0750791

Title :   Mathematical Models for Predicting Pulse Characteristics in Digital Logic Systems.

Descriptive Note : Technical rept.,

Corporate Author : BELL TELEPHONE LABS INC WHIPPANY N J

Personal Author(s) : Tomerdahl,J. B. ; Nelson,A. C. ; Mazuy,Kay K.

Report Date : JUN 1963

Pagination or Media Count : 26

Abstract : The multiple use of relatively few types of basic building blocks in digital computers requires that the system designer have knowledge of the actual performance characteristics of these units in order to produce optimum designs. Worst-case analysis procedures do not yield realistic performance data. The performance prediction technique discussed in the paper is based on the development of empirical mathematical models which relate the performance variables of interest to the pertinent system parameters. Prediction equations are fitted for rise time, fall time, delay time, and storage time for a parity-check circuit. A statistical analysis of the prediction equations is made to determine the validity of the models. The goodness-of-fit of these models is presented in graphical form. A brief summary of the least squares procedure used in obtaining the coefficients of the models is given. (Author)

Descriptors :   (*LOGIC CIRCUITS, MATHEMATICAL MODELS), (*DIGITAL COMPUTERS, RELIABILITY(ELECTRONICS)), SWITCHING CIRCUITS, GATES(CIRCUITS), EXPERIMENTAL DESIGN, REGRESSION ANALYSIS, CURVE FITTING, GRAPHICS, ANALYSIS OF VARIANCE, PULSES

Subject Categories : Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE