Due to the present trend to utilize both virtual memory and
paging for the implementation of storage for large-scale computer
systems, it is of interest to analyze the pertinent parameters
associated with the operation of a paging system. This paper
describes the paging process and determines the effect of variations...
A high speed adaptive signal processing concept and several high
speed adaptive logic circuit elements are presented.
The adaptive signal processing system operates in a "goal" oriented
mode; the system tries to optimize its characteristics to
achieve a given goal in spite of unforeseen variations in the inputs,
the system,...
The High Temperature Lattice Test Reactor (HTLTR) at Richland,
Washington, operates at temperatures up to 1000°C. Its low nuclear
power requires a 384 kilowatt electrical heating system, that is
divided into four circuits, to attain the high temperatures in the
ten-foot cube of moderating graphite. This thesis describes the
design...
Methods for mathematically modeling digital networks and
for constructing a digital network simulator are presented in this
paper. Two simulator programs have been written in FORTRAN
for the CDC 3300 Computer system: one for analyzing the behavior
of a typical combinational network, and one for analyzing the
behavior of a...
The development of new electronic devices and design procedures
applicable to ternary switching circuits suggests that it might be desirable
to use ternary arithmetic in direct digital control systems.
The advantages of decimal, binary, and ternary arithmetic in digital
computers are discussed and a set of rules for signed -digit...
In view of recent developments in large-scale, complex digital systems, it is of interest to broaden the study of two-leveled logical systems to the study of three-leveled systems. This paper introduces the ternary logic system and develops a design approach for ternary digital systems that is based on familiar binary...
This thesis discusses a method of fast multiplication by parallel
addition of summands. A logical element that performs this parallel
addition is defined, and examples of the element realized with threshold
logic are shown. Relations between the type of logical element
used, and the speed and cost of the multiplier...
A complete procedure of minimizing input logic in designing
both completely and incompletely specified synchronous, finite state
sequential networks is presented in detail. This procedure consists
of three important steps: 1) state simplification, 2) state assignment
and 3) input logic realization. Two new ideas are presented
in the procedure of...
The emergence of the three-input majority gate as a practical element for logical design has demanded a useful method of design using these elements. In order to facilitate the use of this gate, a digital computer program is presented to implement the design procedure. Utilizing the truth table of a...
SIDAC-I is a digital analog simulator which permits analog as
well as hybrid simulations to be programmed on a digital computer.
FORTRAN, a scientific computer language, may be included as an
integral part of the SIDAC-I simulation language. The simulator
consists of a controller program and a set of predefined...
This thesis considers the worst-case design of transistor
circuits for the realization of Majority Logic.
First the meaning of Majority Logic is discussed. The requirement
of an odd number of inputs for the realization of Majority
Logic is justified. The usefulness of Majority Logic in synthesizing
a Boolean expression is...
Because the life processes of the plant are related in a complex
way to the balance between the water demand of the atmosphere and
the water availability to the plant root, an exploration of the dynamic
status of water in the plant is very important. The stomata constitute
the main...
Because of its characteristics, the square-loop magnetic core
can be used as the basic device in a logic system. A magnetomotive
force (mmf) which is below the threshold mmf of such a core will
cause a negligible, nonpermanent amount of flux change in the core;
and information signals can be...
This thesis describes the control circuitry for a
telemetry system developed to report hydrologic information
from remote locations. The multiparameter,
on-call system operates on a single frequency. Each
remote station responds to a predetermined number of
pulses from the master station. Data is transmitted by
pulse- duration modulation.
In the...
Instruments which combine the features of a digital-to-analog
conversion and a linear-to-logarithmic scale change usually perform
the digital-to-analog conversion first. These instruments are accurate
to within five or ten percent over ranges of five or six decades.
This thesis presents a method which uses combinatorial logic
to perform the linear-to-logarithmic...
The logic control system of a computer automatically sequences
logic operations which direct how and when memory stored instructions
and data are processed in the digital registers.
This thesis contains circuit schematics and test results of a
nanosecond response logic - control system for the Galaxy Computer.
The circuit designs...
This thesis is an investigation of the characteristics of transistor-coupled logic using both theoretic and experimental methods. The steady state and transient behavior of the transistor are first investigated, especially as applied to the common emitter configuration. A number of references giving further information are cited.
Next, the characteristics of...
Airfoil flow simulation tests were carried out in a 20-inch
diameter double layer circular electrolytic tank. Results of the
tests indicate that the tank very closely approximates ideal conditions.
The double layer circular electrolytic tank is shown to
generate a very large rectangular tank. Formulas were derived to
show that...