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Logic

How to Make Logic Gates using Transistors

Last Updated on September 6, 2022 by Swagatam 12 Comments

1

In this post I have explained how to build NOT, AND, NAND, OR, and NOR logic gates using discrete transistors. The main advantage of using transistor logic gates is that they can work even with voltages as low as 1.5 V. In some electronic applications the available voltage may be inadequate to power TTL or […]

Filed Under: Electronics Theory Tagged With: Gates, Logic, Transistors

Boolean Algebra in Logic Circuits Made Easy

Last Updated on April 2, 2022 by Swagatam 10 Comments

inversion compressed

Boolean algebra is a assortment of basic mathematical techniques applied to signify and communicate the logical procedures that happen within a digital circuit. Difference Between Boolean Algebra and Common Algebra Boolean algebra is much like common algebra. The main distinction is that in contrast to common algebra, in which we have parameters that can be […]

Filed Under: Electronics Theory Tagged With: Algebra, Boolean, Circuits, Easy, Logic, Made

12 Basic Digital Logic Circuits Explored

Last Updated on January 18, 2025 by Swagatam Leave a Comment

Fig1a

In the following paragraphs I will try to explain the most basic foundations of digital electronic circuits: namely logic gates and logic flip-flops. Whether it is a complex and larger digital circuits, or as simple as a BCD counter, for example the 7490, or a large-scale integration (LSI) microprocessor chip, eventually all of these comprise […]

Filed Under: Electronics Theory Tagged With: Basic, Circuits, Digital, Explored, Logic

4 Useful Logic Probe Circuits Explored

Last Updated on September 10, 2023 by Swagatam 8 Comments

logic probe characteristics

These simple yet versatile 4 LED logic probe circuits can be used to test digital circuit boards such as CMOS, TTL or similar for troubleshooting the logic functions of the ICs and the associated stage. What is a Logic Probe A logic probe circuit is a handheld electronic tool which can be used to test […]

Filed Under: Meters and Testers Tagged With: Circuits, Explored, Logic, Probe, Useful

UP DOWN Logic Sequence Controller Circuit

Last Updated on July 6, 2019 by Swagatam 6 Comments

Using a set of latch/reset networks it becomes possible to allow a logic to move in a forward sequence, switching ON a given set of outputs HIGH, in response to an alternating input clock. And once the max limit is reached, the input clocks begin shutting down or withdrawing the sequence in the opposite order. […]

Filed Under: Electronics Theory Tagged With: Controller, Down, Logic, Sequence, UP

How Logic Gates Work

Last Updated on July 13, 2024 by Swagatam 1 Comment

AND gate

In this post I will comprehensively explain what logic gates are and its working. We will be taking a look at the basic definition, symbol, truth table, Multi input gates, we will be also constructing transistor based gate equivalents and finally we will take an overview on various relevant CMOS ICs. What are Logic Gates […]

Filed Under: Electronics Theory Tagged With: Gates, Logic, Work

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