Questions tagged [digital-logic]
Digital electronics treats discrete signals, unlike analog electronics which treats continuous signals. Digital logic is used to perform arithmetic operations with electric signals and constitutes the base for building CPUs.
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Dual edge triggered Bistable Multivibrator
Design a bistable multivibrator to increase the frequency at which the data is stored. When doing so, ensure that the data is stored at the rising and falling edge of the clock. However, due to lack ...
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How do I decompose 6 or more variable truth table to groups of 4 or 3 variable truth table and K-map them and combine the equations?
K-maps are a go to method of finding SOP/POS form for truth tables of up to 4 variables, beyond that the K-maps become explosively complex to manually draw and solve.
Is it possible that for 6 bit ...
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How can I switch between battery tracking mode and input voltage regulation mode on the BQ24210?
I'm trying to create a circuit in which a BQ24210 automatically switches between charging a battery via battery tracking mode and charging it via input voltage regulation mode. This is done by having ...
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Controlling a device in a car using a button and ignition
I need to connect a device to my car. I thought about using an XOR gate because:
A - button
B - car ignition.
If the car's ignition is off (0), pressing the button (1) will turn on the device (1).
If ...
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Specific, practical examples of limits of logic gate fan-in?
I've been looking around for discrete, specific, and practical answers to the question "how many inputs can a (N)AND/(N)OR gate have?" as it relates to ASIC/VLSI/MOSFET/semiconductor ...
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How to approach the highlighted part of the question?
The boolean expression for Z for the four input module came out to be A0A1A2+A0A2A3+A0A1A3+A1A2A3
I am attaching my work here.
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Delay in discharging of the capacitor for sequencing purpose
Our aim is to sequence 2 different power supplies i.e. 5 V and -48 V.
On sequence is first "5 V is generated" and then "-48 V is generated" with 120 ms delay.
Off sequence is first ...
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RKJXT1F42001 Logic diagram
I'm looking into integrating an RKJXT1F42001 4-directional stick switch with encoder and center push function into a keyboard I am designing, but a little confused about the diagram. I want to make ...
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What's the real absolute maximum output voltage of the 74LVC07?
Datasheets for the 74LVC07, such as this one from TI, and this one from Nexperia, state that the absolute maximum output voltage for the open-drain outputs (in high state) is +6.5V.
There is a table ...
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Logitech G604 Mouse button switch circuitry does something... unusual...? Does anyone know why?
I was replacing switches on my Logitech mouse to resolve the infamous double-click issue.
While I had my mouse apart for repairs, I decided to hook up an oscilloscope to witness the double-clicks ...
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Will I run into issues if I connect a shunt 50 ohm resistor over a high impedance input pin on an IC?
I am using a level shifter with high impedance input pins. The input to the shifter is coming from a 50 ohm output impedance component through a 50 ohm line. For matching purposes and according to the ...
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Clarification on getting 1 Hz from a 32.768 kHz input using 74HC4060BQ-Q100
I'm working on a project where I need to divide a 32.768 kHz signal down to 1 Hz. I initially thought I needed a Q14 output from a counter, similar to the CD4060 circuit where Q14 is passed to a D ...
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Unknown use 20 V injection in KNX Digital input (read switch status) gvs 4fold
This is a circuit that I've recreated from gvs 4fold digital input.
There is common and wire that goes to 4 switches (this circuit only shows 1 of them) when it it's closed the microcontroller reads ...
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I need help with the 4:1 MUX select probes? [closed]
I am making a DC motor (motor A) that is working under the following conditions:
a) We have a 5 Hz clock signal,
b) stops for 2 seconds,
c) turns right for 4 seconds,
d) stops for 3 seconds,
e) turns ...
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Is this the correct way to create a circuit that convert a 7-bit number to either binary or gray code? (digital logic design)
I've created a circuit that gets a 3-bit code and changes it to either from binary to gray code (if c is low) or from gray code to binary (if ...
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