Basic Digital Circuits Research Articles

A ROM-based high-accuracy line frequency and line frequency deviation meter

The meter is based entirely on basic digital circuits and does not include a microprocessor. A large-capacity ROM is used to convert the data, which are proportional to the line period, into line frequency and line frequency deviation. The meter provides 0.001-Hz resolution and an updating speed of 4 times per second. A computer algorithm for developing the ROM memory map is also presented. A prototype of the meter has been constructed and found to work well.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>

Simulation and error search in teaching digital electronics by means of a microcomputer

This paper deals with the introduction of the microcomputer in digital electronics courses as a demonstration tool for simulating the working principles of basic digital electronic circuits. Another usage of the microcomputer is made in laboratory work where it is introduced as a circuit debugger.