What is Digital electronics: Definition and 22 Discussions

Digital electronics is a field of electronics involving the study of digital signals and the engineering of devices that use or produce them. This is in contrast to analog electronics and analog signals.
Digital electronic circuits are usually made from large assemblies of logic gates, often packaged in integrated circuits. Complex devices may have simple electronic representations of Boolean logic functions.

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  1. PainterGuy

    Why digital electronics section start with analysis of inverter?

    Hi, Both NAND and NOR are considered to be universal gates. For example, NAND gates can be used in combination to perform the AND, OR, and inverter operations. The same could be said of NOR gate. Then, why the digital electronics section of electronics textbooks almost always start with the...
  2. Y

    Comp Sci How does a washing machine make use of digital electronics?

    I know what Boolean algebra and logic gates are, but I am having a hard time to describe how washing machines operate on digital electronics. Here's my attempt 'Washing machine have various functions like different cycle settings for various temperatures or cycle duration, or a delayed start...
  3. D

    Problem understanding a parameter in a digital filter

    Homework Statement Digital causal recursive filter is a part of a digital signal processing system which has sampling frequency ##fs = 1200Hz## and is given by a differece equation: where ##r = 0.9## and ##θ## is such that it filters out the spectral components at ##f = 200Hz## Find ##H(z)##...
  4. adamaero

    What is the ASCII code an ultrasonic sensor will output?

    Problem statement For an ultrasonic sensor (MB7380) sending 8 data BITS, no parity and one stop bit, what is the ASCII code it will give for a certain distance like 0.15 meters (0.5')? maxbotix.com/documents/HRXL-MaxSonar-WR_Datasheet.pdf#page=2 Attempt at a solution I do not know how to...
  5. D

    Engineering Problem regarding a transistor state in a NAND circuit

    Homework Statement Calculate the output function and draw a graph of output voltage in the function of the input voltage of the following digital circuit: Homework Equations 3. The Attempt at a Solution [/B] By analysis of what happens when inputs A and B are on the logical "1" i have...
  6. Geek007

    What is baseline wandering in digital transmission?

    hi there, can someone please explain what is baseline wandering and how the continues 1's and 0's cause baseline wandering in digital transmission? Regards
  7. 010101

    Optical Adder Using 2 Lasers & Selectable Intensities

    If we use 2 lasers with selectable light intensities as input, with each level of intensity corresponding to decimal number. Like level 0 intensity - decimal 0 (MIN) level 1 intensity - decimal 1 level 2 intensity - decimal 2 ... level 9 intensity - decimal 9 (MAX) and directly shine both of...
  8. Eltahawy

    Engineering Where Can I Find Good Digital Electronics Books for My Course?

    I'm in a digital electronics course studying memories and latches and flip flops and need some good books I can study from them
  9. Giant

    How to think digital electronics?

    I'm having difficulty grasping digital circuits. I'm not even sure how to think of it.. For eg. In analog electronics when it comes to transistors I can clearly and perfectly visualize how current amplification or power amplification occurs. To further elaborate my problem,, I recently learned...
  10. A

    Digital Electronics- logic gates problem

    A bulb in a staircase has two switches , one at the ground floor and the other one at the first floor. The bulb can be turn ON and also OFF by any of the two switches irrespective of the state of the other switches, then what is the logic of switching of the bulbs
  11. C

    Digital Electronics Homework Help

    I need help in creating a weighted timing controller that uses 4-bit DIP switch (Weight), 1-bit DIP switch (Fast/Slow operation) and etc. The question is shown below. Creating a Weighted Timing Controller: A simple microwave oven has two cooking modes: a "Slow cooking" mode that operates on...
  12. W

    Understanding Active High Circuits and Digital Logic: A Beginner's Guide

    I've recently started a digital electronics course with a lab component (so far not at all related to the lectures). Unfortunately, there are no prerequisites for the course and I guess they somehow expect us to know a whole lot about circuits, but I'm completely confused. I"ll just ask two...
  13. N

    Prerequisites for Digital Electronics

    Hey guys, I have designed and built digital circuits with relatively low knowledge on circuit analysis (resistor nets, Wheatstone bridges, etc.) or analog electronics. I do know how to utilize Kirchhoff's circuit laws and Ohm's law. Is it necessary to understand analog systems and circuit...
  14. D

    Courses Help Course Selection: Analogue Electronics versus Digital Electronics

    Hi, I am a student at the University of Waterloo and am entering my 3rd year of my BSc. I have an elective this semester and I thought I would take an electronics course. I feel like it would be useful for a bunch of things. In terms of my future career, and what skills would be...
  15. K

    Digital Electronics: BJT Flip Flop Circuit Diagram

    I want to know the BJT implementation of flip flop with the help of proper circuit diagram..
  16. T

    Output specific frequencies with digital electronics

    I'm trying to figure out how to build a breadboard instrument using either push buttons or logic switches as they keys that will play each note. The issue that i am having is that I don't think finding all of the perfect resistor and capacitor combinations for each note is a good idea. So, i...
  17. 6

    Digital Electronics: State machine

    Homework Statement (a) How many states does this system have? (b) How many rows will there be in a state transition table? (c) Provide the state transition table. (d) Draw a state diagram of the system. (e) Describe what the circuit does in words. Homework Equations The Attempt at a...
  18. L

    Troubleshooting Digital Electronics: Why Don't My ICs Work?

    I'm not really new to Digital Electronics, but this is confusing the crap out of me. My school's started a DE class and at the moment we're getting all our equipment worked out and stuff, but for some reason NONE of our IC's work. We're using a 9-volt batter with a 7805 regulator for 5 volts...
  19. O

    Digital Electronics Project - Sound detection

    Greetings all, I thought I'd post my idea and plan for my digital electronics project here to see if I can get any tips or meet people who may have some expertise on this subject... The basic idea is a 'lock' that is opened by the correct series of input notes. Using a PIC, what I'm...
  20. G

    Digital Electronics: Binary-Coded-Decimal to Seven-Segment Decoder

    This is one of the problems I have for homework: Consider a BCD-to-seven-segment decoder and suppose that the BCD data are represented by the logic variables B8, B4, B2, and B1. For example, the decimal number 7 is represented in BCD by the word 0111 in which the leftmost bit is B8=0, the...
  21. D

    Digital Electronics Boolean Reduction

    Digital Electronics Boolean Reduction! Help Please Ok i need to figure out how to reduce this I've been working on it for 2 days straight and can't figure it out...please help...its due tommorow :uhh: :cry: (ab)(\overline c + \overline d)+(a+b)(\overline c \overline d)