What is the purpose of a common cathode in electronic circuits?

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Discussion Overview

The discussion revolves around the design of a 2-bit full adder circuit, specifically focusing on the implementation and display of the output using a seven-segment display. Participants seek guidance on the components and connections required for their project, including the role of a common cathode in the circuit.

Discussion Character

  • Homework-related
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • One participant expresses a desire to design a 2-bit full adder and seeks hints or guidance on how to proceed with the project.
  • Another participant inquires whether a full adder IC exists or if it must be constructed using basic logic gates like OR and AND.
  • A suggestion is made that a 4-bit full adder IC is available, with a link provided for reference.
  • There is a request for clarification on the power connections for the seven-segment display, specifically regarding Vcc and ground.
  • A question is posed about the meaning of a common cathode configuration, specifically whether pins 3 and 8 should be connected to ground.

Areas of Agreement / Disagreement

The discussion does not present a consensus on the approach to building the full adder or the specifics of the common cathode configuration, as participants are seeking clarification and guidance rather than asserting established facts.

Contextual Notes

Participants have not provided specific details about their initial designs or assumptions regarding the components, which may limit the clarity of the discussion.

zeroground
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1. i want to design a 2 bit full adder (that adds two numbers each having 2 bits) with carry in and carry out and to show the output on seven segment display..




3. the problem is that i am student in mechanical power and i am taking an electronics course..can you tell me what to do or some hints please..
 
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answer me pleaseee... what do i have to do ?
is there an ic called full adder or i have to make it with OR and AND gates ?
 
You can get a 4-bit full adder as an IC:

http://www.doctronics.co.uk/4008.htm
 
Last edited by a moderator:
Janus, can u tell me what to do please with my project ?
 
is there vcc and ground for the seven segment ?
 
what is the common cathode (3,8) ? does it means that these two pins (3,8) must be connected to the ground ?
 

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