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Recent content by Micro Lover

  1. M

    How to save a game-score?

    hi every one i m trying to make a "Master-Mind" game with different skill levels there are 5 levels, and one "stopwatch" to count the time; that player consume when player select any one skill mode to start a game, the stopwatch start to count the time the player must solve the game with in...
  2. M

    basic information about PIC

    hi i m using mikroC PRO for PIC in the examples of mikroC PRO for PIC, i saw one code ANSEL = 0; // Configure AN pins as digital ANSELH = 0; C1ON_bit = 0; // Disable comparators C2ON_bit = 0; In the example file, in the comments, ANSEL = 0; mean to Configure AN pins as...
  3. M

    Is there any microcontroller having built in I2c function

    hi as i know that 89c51 is the most popular micro-controller, designed by ATMEL, its built in serial function is very useful, but the problem is that 89c51 didnt have a built-in I2C function, my question the that Is there any microcontroller having I2c function built in, in 80 series??? or...
  4. M

    Is it possible to send serial using Eathernet port like Com-port ( RS232 or db9 )

    i found the PDF file (Attached with this Thread), in this file; at page 1 shown that pin6 of rj45 same as pin3 of Com-port and pin3 of rj45 same as pin2 of Com-Port (RxD and Txd) so is it possible to send serial data via Ethernet using 9600 baud rate ??????????????????
  5. M

    How to stabilize the output of LEDs

    hi i m making digital clock using 89c51, in this clock the series of LED work on 9 volt, so i used lm324 to amplify the voltage with 5 volt signal, this output is stable across direct-ground, but the second end i used A683 (PNP) transistor, for ground (-) normal its show 9 volt across 10-volt...
  6. M

    Require atmel microcontroller, smallest size and Minimum I/O pins

    hi, i m trying to control the lights, fans and other electronic devices using serial, so when i send a serial data with specific code, the specific uC read the data and turn on/off one pin, so using this pin i can turn on or off required device. i want to know which microcoltroller is smallest...
  7. M

    how can in get one bit and copy it to specific location in another byte

    hi i have two variable unsigned char x = 170; // 10101010 unsigned char y = 255; // 11111111 now i want to copy the 3rd bit of x (Bold) to the 6th bit of y (underlined) in keil 4.10, portable using C how can i do it?
  8. M

    analog to digital using 89c2051

    hi i want to read the analog signal using 89c21, and convert it to digital e.g if signal signal is 5v then convert it to 255 in digital form, and if signal is 2.5 volt then it will be 127 is it possible, if yes then HOW? using software : KEIL language : C thnx
  9. M

    regulated power-source during switching

    i m using lm324 , the frequency is almost 100 hz, and load is aprox 1.5 amp (using 12 v) simply i m using bd-135 for load, its normal power is 1.5 amp, but during switching it can work on 3.0 amp and very important is that, both ( + ) and ( - or ground) are from micro-controller so i also need...
  10. M

    regulated power-source during switching

    here i m trying to explain and very important is that, both ( + ) and ( - or ground) are from micro-controller so i also need stable or regulated ( i m not sure which word is more usable) ground or (-)
  11. M

    regulated power-source during switching

    hi i m using 89c51 to displaying different type of bulbs, and i need a regulated output, the problem is that i m using switching mode, so how can i get a regulated output
  12. M

    Reading Data using I2C

    hi i m using 89C2051 i want to read the temperature using i2c in Keil uVision4 is there any simplest code ? // In C i mean just send address and read data no more
  13. M

    How to call a function after a specific clock period

    hi I am using 89c51. for using serial port I am using these commands SCON = 0x50; /* SCON: mode 1, 8-bit UART, enable rcvr */ TMOD = 0x20; /* TMOD: timer 1, mode 2, 8-bit reload */ TH1 = 0xfd; /* TH1: reload value for 9600 baud...
  14. M

    89C51 (P0) Open Drain Problem

    here i tried to explain the problem hi, here i tried to explain the problem
  15. M

    89C51 (P0) Open Drain Problem

    hi i m using 89C51, the 3 ports (P1, P2, P3) are used for different purpose, but the remaining port (P0) , the Open Drain, is remain, the problem is that, I want to use it for 15 different Lights, using matrix, (3 Rows and 5 columns) the 3 rows are positive volt and 5 are minus/ground (each pin...

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