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89C51 with 74HC573 latch

Discussion in 'Intel' started by manipulator, Jan 6, 2005.

  1. manipulator

    manipulator Guest

    hi..i'm need some help on 8051 programming here...
    i'm electronics hobbyists...i have not learn about 8051...i jus
    started to play with it myself fter i saw some interesting project bou
    8051 board on net.
    i have get a 89C51 board from a second hand shop...but it don't com
    with firmware.
    i have found some code on net to make the on-board LCD work...but i no
    able to get the Keypad scaned and the buzzer work...because their ar
    connect through a 74F573 latch. I can't found any example bout the cod
    the use similiar circuit...
    i have draw the simple circuit of the keypad connection...hope the 805
    expert here can help me.
    give me example of code for scan the keypad and buzz up the buzzer

    |Filename: keypad.zip
    |Download: http://www.computerbanter.com/attachment.php?attachmentid=136
    manipulator, Jan 6, 2005
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