plz Can Any One Help ME ? :$

Discussion in 'Homework Help' started by MEMoOo, Apr 1, 2010.

  1. MEMoOo

    Thread Starter New Member

    Apr 1, 2010
    15
    0
    i'm studin' in arab open universty and i have TMA that talk about micropcessor and alot of thingz


    nw i'm askin' u all to help me in a Q says :

    (a) Assume an electronically controlled kitchen appliance “microwave oven” , as a background for this question and answer the following,

    (Note: the microwave oven is fitted with a microcontroller)


    1. How the input is given to device? Explain the various input buttons? (2 marks)

    2. What is the output device used? What output is shown on the output device? (5 marks)
    3. Draw a flow chart explaining the operation of the above mention device? (10 marks)

    till nw i'm like these :confused: but when i saw these fourm i said 4 sure i'll find some one to help ;)

    thanks all in advance

    and sorry if there is a wrong spilling in my wordz :$


    byebye :)
     
  2. JDT

    Well-Known Member

    Feb 12, 2009
    658
    85
    Well, have a look at your microwave. Have you got one?

    Input devices:-
    Buttons (0-9, ON, OFF....)
    Switch contact - Door

    Output devices:-
    LED display of time and function.
    Other warning LEDs
    "Finished" bell.
    Relay to control the magnatron power.

    Flowchart:-
    How do you program the cooking time?
    What happens if you open the door while it is on?
    What sound does it make when the cooking is finished?
     
    MEMoOo likes this.
  3. MEMoOo

    Thread Starter New Member

    Apr 1, 2010
    15
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    THANK U So much


    but can i ask u for a simple drowing for the flow chart :(



    really I appreciate what u did


    byebye ;)
     
  4. blueroomelectronics

    AAC Fanatic!

    Jul 22, 2007
    1,758
    98
    Why not try and draw a flowchart yourself and post it here for review.
     
  5. MEMoOo

    Thread Starter New Member

    Apr 1, 2010
    15
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    oooooooooook i'll try nw :D
     
  6. MEMoOo

    Thread Starter New Member

    Apr 1, 2010
    15
    0
    [​IMG]


    i hope it is ok

    and i wrot what i understand but i think i need some help in what should i right so it will be good fot my dr ...


    thanks
     
  7. JoeJester

    AAC Fanatic!

    Apr 26, 2005
    3,373
    1,157
    MemoOo,

    Think about all the events from the time you have the food ready to place into the microwave till the end process.

    Then review your flowchart and modify as needed.
     
  8. MEMoOo

    Thread Starter New Member

    Apr 1, 2010
    15
    0
    and whats wrong with mine ???


    :D its Violet :D


    can u just tell me what should i da and i'll do it right a way :(



    thanks again


    bybye :)
     
  9. retched

    AAC Fanatic!

    Dec 5, 2009
    5,201
    312
    I would start with open door. There needs to be a safety on the door so people dont cook themselves.
     
  10. MEMoOo

    Thread Starter New Member

    Apr 1, 2010
    15
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    oooooooooh right :D


    ok i'll try to modify it nw

    thank u :p


    bybye :)
     
  11. MEMoOo

    Thread Starter New Member

    Apr 1, 2010
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    0
    [​IMG]

    waht about these ?
     
  12. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    8,733
    759
    I like you, you are very creative.
     
  13. MEMoOo

    Thread Starter New Member

    Apr 1, 2010
    15
    0
    thank u sooo much for ur complement :p


    but i want to know if it is oky ??? :(


    bybye :)
     
  14. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    8,733
    759
    yeah ur posts, u can decorate it any way u want, I donno about the mods
     
  15. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    8,733
    759
    Hi there
    Let me help u a bit.
    Q1. Input is given in two ways.
    a) Is Power input from the Main Incoming Supply
    b) User input, setting the function program

    Q2. Output device is called a Magnetron.
    I have attached a diagram to show you the Magnetron Symbol, take a look.
    From it U can complete ur answer.

    Q3. This question is a problem, I donno to which it is referring to.
    If it the magnetron, then diagram I have attached will help u.
    If it is the micro controller, then a flow chart will consist of how the controller should behave. It should always check for safety switches first. If a safety switch is activated the uC should switch off the unit.
    Secondly the uC should work in accordance with user input program and once completed it will shut down automatically.

    I hope this helps.
    Cheers
     
  16. MEMoOo

    Thread Starter New Member

    Apr 1, 2010
    15
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    thank u so much for ur replay

    and about Q3 they asked us to drow flow chart talks about what ever happends in the maicrowave oven

    ( Draw a flow chart explaining the operation of the above mention device ? )

    so we will mix it together to drow the whole procees :D

    and thats why i'm asking , coz i dunno if these is enaugh to satisfy my dr and expline each process in it .


    thanks again

    bybye :)
     
  17. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    8,733
    759
    Hi.
    I cannot do ur home work for u, you should do it, and I can help.
    I have given enough info to get you started.
    Try and post it and we will see.
     
    Last edited: Apr 4, 2010
  18. MEMoOo

    Thread Starter New Member

    Apr 1, 2010
    15
    0
    i already did it

    i'm asking if there is any thing missing

    i dunno who could u say that , i don't want u to solve my TMA :(


    thank u


    bybye
     
  19. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    8,733
    759
    there is no warning bell on ovens, instead it just shuts down the operation when the door is open and resumes when closed.
    There is program end beep though
     
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  20. MEMoOo

    Thread Starter New Member

    Apr 1, 2010
    15
    0
    yaaaaaaaaaaaah thats right ;)


    thank u


    byebye :)
     
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