Frequency Counter Design

Discussion in 'Homework Help' started by IEEE, Dec 30, 2009.

  1. IEEE

    IEEE Thread Starter New Member

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    hi all

    i have a homework to design a frequency counter as follows:

    1- The design must have a keypad as an input,and seven segment to display the frequency on it(output).
    2-The input wave could be square,sin wave....
    3- I must use concepts of 8088,8255,8254 in designing the counter
    4-Microcontrollers or ready IC's are not allowed in the design
    5-In the final report i should show the design with comments,flowchart,and the assembly code used to run it.

    I am not too much into microprocessor interface so if anyone can help me it will be great..

    THX
     
    #1
  2. hgmjr

    hgmjr Moderator

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    What does your circuit look like so far? Post your diagram here. Maybe we can guide you through the rest of the design.

    hgmjr
     
    #2
  3. IEEE

    IEEE Thread Starter New Member

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    i really didnt make a circuit yet,actually computer engineering is not my major,so i dont know how to start,can you guide me on ideas how to choose a good circuit to work?
    thank u for ur fast reply
     
    #3
  4. blueroomelectronics

    blueroomelectronics Senior Member

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    Start by reading up on the 8088. It's not going to be an easy project with that old microcomputer, it's more a task for a microcontroller.
     
    #4
  5. IEEE

    IEEE Thread Starter New Member

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    I already drew this block diagram (attached) ,but i don't know how to start the assembly code
     

    Attached Files:

    #5
  6. hgmjr

    hgmjr Moderator

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    The block diagram is a good beginning. Don't forget to account for the power supply.

    Now you can begin to take a stab at designing each of the blocks you have indicated in your diagram.

    hgmjr
     
    #6
  7. blueroomelectronics

    blueroomelectronics Senior Member

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    #7
  8. beenthere

    beenthere Retired Moderator

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    It's pretty simple to make one with a timebase, some logic, and some counters.

    School projects are supposed to be instructive, though. This is a not-too-terribly-difficult project that will teach hardware functions, I/O, and programming. Too bad it's a stinky 8088 instead of a 6502 or a 6800.
     
    #8
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