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Recent content by gakko

  1. G

    How to use 8051 to design 3x4 keypad?

    thanks for answer the problem is solving
  2. G

    How to use 8051 to design 3x4 keypad?

    Such as title and I want to use 8051 and 1602 alphanumeric LCD display module and buzzer to do a 3X4 keypad For example a number board 7 8 9 4 5 6 1 2 3 . 0 - Also, Can this device detect more one button at a time?
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    Need some help when doing adder with AT89S52

    Well when I write it in IC and connect to 7-segment display then i contral it with the button "+" "-" "reset" it can not display well In fact when I press the button "+" it will not display the number "1" and it will display the random - - - Updated - - - I check the code and I did...
  4. G

    Need some help when doing adder with AT89S52

    I use the device is AT89S52 and it connect to 8 digits 7-segment display board Also, AT89S52 connect to 9 button one of it is stop other 8button and other 8button is P1 port
  5. G

    Need some help when doing adder with AT89S52

    I have do a adder have three button it is reset, up, down respectively It have some display error and plz help me sbit reset = P1^4; sbit up = P1^5; sbit down = P1^6; unsigned char CA_Digits[] = {0xC0, 0xF9, 0xA4, 0xB0, 0x99, 0x92, 0x82, 0xF8, 0x80, 0x90, 0x88...
  6. G

    AT89S52 through C Program with 7segment

    what is digital[] in use in this program? also we use P3 to contal the digital's display dp?
  7. G

    AT89S52 through C Program with 7segment

    Its difficult for me to understand how to curry when 9 become 10 Can you write a example program code to shows that how to curry in( when one digital to two digital , two digital to three digital and three digital to four digital please write more easy
  8. G

    AT89S52 through C Program with 7segment

    thanks but my counter have 4digital I don't know how to curry in when 9 -> 10 also please teach me how to do a good delay time - - - Updated - - - I want to display integer value my type is CA
  9. G

    AT89S52 through C Program with 7segment

    well... I want to write a C program into AT89S52 and then AT89S52 contral 7segment to display the number ( auto add one by sequence
  10. G

    AT89S52 through C Program with 7segment

    Hello everyone I want to know that how to write a C program into AT90S52 and it make 7-segment become the number adder EG. with 5ms 0->1 after 5ms 1 -> 2 thanks
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