- published: 15 Nov 2014
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Digital electronics or digital (electronic) circuits are electronics that handle digital signals - discrete bands of analog levels - rather than by continuous ranges (as used in analogue electronics). All levels within a band of values represent the same numeric value. Because of this discretization, relatively small changes to the analog signal levels due to manufacturing tolerance, signal attenuation or parasitic noise do not leave the discrete envelope, and as a result are ignored by signal state sensing circuitry.
In most cases, the number of these states is two, and they are represented by two voltage bands: one near a reference value (typically termed as "ground" or zero volts), and the other a value near the supply voltage. These correspond to the "false" ("0") and "true" ("1") values of the Boolean domain respectively, named after its inventor, George Boole, yielding binary code.
Digital techniques are useful because it is easier to get an electronic device to switch into one of a number of known states than to accurately reproduce a continuous range of values.
DIGITAL ELECTRONICS NUMBER SYSTEMS (IN HINDI)
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This video will introduce Basic Logic Gates. I will cover the following topics: What is an AND gate? What is an OR gate? What is a NOT gate? Construct truth tables for logic circuits Use truth tables to prove Boolean theorems Express the output of a logic circuits using a Boolean expression Express a Boolean expression as a logic circuit You will find some other helpful items below: Lecture notes: http://district.bluegrass.kctcs.edu/kevin.dunn/files/3_Basic_Logic_Gates Lecture notes: http://district.bluegrass.kctcs.edu/kevin.dunn/files/Exclusive_OR_Gate Handouts and Practice http://district.bluegrass.kctcs.edu/kevin.dunn/files/Handouts_Digital_1.zip http://district.bluegrass.kctcs.edu/kevin.dunn/files/Handouts_Digital_2.zip Please leave a comment and 'like' the video if it was helpfu...
This video will discuss Flip-Flops. I will cover the following topics: Cross Coupled NOR and NAND SR Flip-Flops Truth Tables SR Flip-Flop Timing Diagram Gated SR Flip-Flops Truth Table Gated SR Flip-Flop Timing Diagram Asynchronous SR Flip-Flop Asynchronous SR Flip-Flop Timing Diagram Positive Edge Trigger Negative Edge Trigger D Type Flip-Flop Truth Table D Type Flip-Flop Timing Diagram Asynchronous D Type Flip-Flop Truth Table Asynchronous D Type Flip-Flop Timing Diagram JK Flip-Flop Truth Tables JK Flip-Flop Timing Diagram Asynchronous JK Flip-Flop Truth Table Asynchronous JK Flip-Flop Timing Diagram You will find some other helpful items below: Lecture notes: http://district.bluegrass.kctcs.edu/kevin.dunn/files/Flip_Flops To help you take your notes: http://district.bluegrass.kctcs....
This video will discuss Karnaugh Maps. I will cover the following topics: Sum-of-Products Product-of-Sums Solve Boolean expressions using Karnaugh Maps 2 variable 3 variable 4 variable Grouping You will find some other helpful items below: Lecture notes at: http://district.bluegrass.kctcs.edu/kevin.dunn/files/Simplification Handouts and Practice http://district.bluegrass.kctcs.edu/kevin.dunn/files/Handouts_Digital_1.zip http://district.bluegrass.kctcs.edu/kevin.dunn/files/Handouts_Digital_2.zip Please leave a comment and 'like' the video if it was helpful.
This video will introduce Boolean Algebra and Simplification. I will cover the following topics: Describe the basic operations, laws and theorems of Boolean Algebra Commutative Laws Associative Laws Distributive Laws Identity Laws Complement Laws Dual Property Use truth tables to prove Boolean theorems Express the output of a logic circuits using Boolean algebra You will find some other helpful items below: Lecture notes at: http://district.bluegrass.kctcs.edu/kevin.dunn/files/Simplification Handouts and Practice http://district.bluegrass.kctcs.edu/kevin.dunn/files/Handouts_Digital_1.zip http://district.bluegrass.kctcs.edu/kevin.dunn/files/Handouts_Digital_2.zip Please leave a comment and 'like' the video if it was helpful.
Digital Electronics: Karnaugh Map (K' Map) Part 1
Digital Electronics: Quine-McCluskey Minimization Technique (Tabular Method) Support us through Patreon: https://www.patreon.com/nesoacademy