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    Alp For 7 Segment Display

    Uploaded by

    Rajalakshmi S
    The document provides information about 7-segment displays and their interfacing. It includes diagrams of common cathode and common anode configurations. Tables show the digit patterns for numbers 0-9 and letters on the display. The document also includes a program to continuously display the numbers 0-9 on a 7-segment display using an 8051 microcontroller by cycling through a string of digit codes.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd

    Alp For 7 Segment Display

    Uploaded by

    Rajalakshmi S
    22 views9 pages
    The document provides information about 7-segment displays and their interfacing. It includes diagrams of common cathode and common anode configurations. Tables show the digit patterns for numbers 0-9 and letters on the display. The document also includes a program to continuously display the numbers 0-9 on a 7-segment display using an 8051 microcontroller by cycling through a string of digit codes.

    Original Description:

    assembly lamguage program for seven segment display for microprocessor in 8085

    Original Title

    alp for 7 segment display

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    © © All Rights Reserved

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    The document provides information about 7-segment displays and their interfacing. It includes diagrams of common cathode and common anode configurations. Tables show the digit patterns for numbers 0-9 and letters on the display. The document also includes a program to continuously display the numbers 0-9 on a 7-segment display using an 8051 microcontroller by cycling through a string of digit codes.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    22 views9 pages

    Alp For 7 Segment Display

    Uploaded by

    Rajalakshmi S
    The document provides information about 7-segment displays and their interfacing. It includes diagrams of common cathode and common anode configurations. Tables show the digit patterns for numbers 0-9 and letters on the display. The document also includes a program to continuously display the numbers 0-9 on a 7-segment display using an 8051 microcontroller by cycling through a string of digit codes.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 9

    Deo's

    7 Segment Display Institute

    To display numbers from 0 to 9 and some letters like

    A,B,CE,F,H etc.
    Deo's
    7 Segment Display Institute

    F B
    G
    |E C
    D
    Common Cathode Deo's
    Institute

    7 Segment Display

    a a a
    b b

    d d.
    e e
    f d DP

    Comm on
    Cathode
    Common Anode Deo's
    Institute

    7 Segment Display
    +V
    Comm on +
    Anode

    a
    b
    a
    b
    C b
    d-
    f d DP
    Institute
    Interfacing Diagram
    5V

    40
    EA vee
    01
    c3 R3
    Common cathode
    10uf/10V P1 ww
    2 R4
    seven segment LED dsplay

    RST P1.1
    www
    RS
    P12 www-
    R6
    Ct
    AT89S51
    P1.3

    P1.5

    P16
    w
    ww
    R7
    RS
    R9

    x1
    19XTAL P1.7
    w
    R10

    R3to R10 560ohm


    0582ME 18
    XTAL2
    GNO
    20
    G Digit drive pattern
    Institute

    E
    D
    Digit A B C D E F G
    1 1

    0 0 0
    2 1

    3 1

    4 1

    5 1 0
    6
    7 1 0
    8 1
    H
    Digit H
    (DOT)
    9 e d C b a Code

    Vo 0 0 1 1 1 1 1 3F

    1 0 0 0 1 1 0 06

    2 1 0 1 1 1 1 5B

    3 1 0 0 1 1 4F

    4 0 1 1 0 0 1 1 0 66

    5 0 1 1 0 1 6D
    6 1 1 1 1 0 1 7D
    7 0 0 0 1 1 1 07

    8 0 1 1 1 1 1 1 1 7F
    Program to Display 0to 9digits continuously on seven segment display

    ORG 000H starting address

    START: MOV RO,#0AH ;Register RO initialized as counter which


    ;counts from 10 to 0
    MOV DPTR, #string Point DPTR to first element of string
    SBACK:MOV A,#00OH ; Initialize accumulator with 0
    LABEL: MOVCA,@A+DPTR ;read data from program memory
    MOV P1,A ;Send digitvalue to port 1

    ACALL DELAY ;calls the delay of the timer


    INC DPTR ;Point DPTR to next digit of string
    DJNZ RO, BACK ;Decrement counter RO
    SJMP START

    string: db 3FH,06H, 5BH, 4FH,66H,6DH, 7DH,07H, 7FH,6FH

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