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    Signal is periodic or aperiodic

    Hello I need help to find out the type of signal. Whether it is periodic or aperiodic signal. Periodic signal which repeats over and over with repetition period of T I can find out time period T but I don't understand it's is periodic or a periodic signal
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    need help on clock D flip flops table

    Hello Actually I don't understand what will the output on the falling edge. That's why I made the logic table and try to understand the basic. Is it true for d flip flop
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    How to find out current in circuit?

    Hello How to find out current i in circuit. What should I have to apply kcl or kvl. I always confused, I don't understand. Where I need to apply kcl or kvl
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    how the Web server read and execute php file?

    Hello I don't understand basic difference, how the Web server read and execute file like php html. Web server read, processed, and deliver Web page to user I think, in html file server read the file and send same file to the user. How the Web server read and execute php File? Thank you very much
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    Serial port communication

    Hello I want to send data from Web page to the serial port of my computer. I did Google search and I found two method, first access serial port by using visual studio. Net and another is, access serial port using PHP script. I don't understand which method is use to transfer data from Web page...
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    How does web page send data to port of computer

    Hello I have computer that has internet connection and Microcontroller is connected to computer via usb to db9 cable. LED is connected to port pin of microcontroller Computer -> web page (com port of PC)----- DB9 connector -> max Rs232 - > micro c -> LED I want to control LED via web page I...
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    how to find out current in each resistors

    Hello I have multimeter, breadboard and some resistors. I can connect resistors on breadboard I want to do some real work. I can measure voltage , current and resistance with multimeter. I have different value of resistors If we know two known value than we can find one unknown value ie. if we...
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    ac motor pump control using microcontroller ?

    Hello I need help. can we control ac motor pump using microcontroller ? If yes then how to control ac motor pump? what I need , relay or motor driver Ic. motor pump run for 3 minute than turn off for 2 minute, do the task continuously
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    Software to program AT89s52

    Hello I need help to find suitable software to program AT89s52 (look development board ) AT89s52 support Keil compiler , my Laptop have serial port , window which suitable software is used to program AT89s52 ?
  10. V

    automatic water pump

    Hello I want to make automated system that will control flow of water on basis of time water pump motor Voltage: 12V DC Flow capacity:1 Litres per minute microcontroller : 8051 example If I need 1 Litres water then turn on water pump for 1 minute If I need 2 Litres water then turn on...
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    I2C programming ?

    Hello , I need help to understand I2C programming for Microcontroller. 1. Initializing I2C 2. start I2C 3. stop I2C 4.ACK for I2C 5. NAK for I2C I am writing function one bye one. if there is any mistake. let me know 1. Initializing I2C void I2C_Init() { SDA = 1; SCL = 1; } 2...
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    scroll message on an LCD...

    Hello , I am making small project on software Microcontroller 8051 language assembly assembler- 8051 IDE source code ORG 0H MOV A,#38H ; command ACALL COMNWRT ;call command ACALL DELAY ;give LCD some time MOV A,#0EH ;display on, cursor on ACALL COMNWRT ;call...
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    Network theorems in Electronics ?

    Hello I know electronics circuits made from both active and passive component. passive component such as resistor,capacitor,inductor Active component such as diode , transistor Example :Nortan, thevenin theorem Network theorem is use to find resistance , current and voltage I am confused...
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    Embedded device driver

    Hello I did google search for embedded device driver. I found some results A device driver is a program that controls a particular type of device that is attached to computer. There are device drivers for printers, displays, CD-ROM readers, diskette drives, and so on. many device drivers...
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    LED blinking assembly code

    hello , i need help to understand how does each instruction fetch decode and execute in 8051 microcontroller I made small project for LED blinking on proteus software circuit assembly code : ORG 0 MainLoop: setb P1.0 ; Turn LED ON Acall Delay...
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    How to deal with someone

    Hello, I need advice . how to show my behavior, that I am not rude , I really don't want to hurt someone. I don't understand things easily. I always take much time to learn. I except, that's my fault but its not my permanent fault. I will defiantly improve my skill. my English is not very...
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    Program counter

    Hello , I need help , I want to make program counter for program memory program memory 8 data line 16 address line program counter 16 input 16 output clock signal output of program counter connected with input of program memory I need Idea how to make program counter ?
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    assembly Instructions

    Hello I need help to understand how does instruction fetch , decode and execute code ORG 000 MOV A,#55H ;load immediate value 55H into reg. A MOV R0,A ; move the content of A into R0 END p> Immediate ------------ Accumulator Accumulator------------- register CODE Memory 74 55 F8 MOV A,#55=...
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    Basic parts of processor ?

    Hello experts I need someone to check my work some part of controller Instruction is 4 bit 16 instructions Data is 8 bit ALU is 8 bit Program memory is 4x16 bit Data memory is 8 x 256 bit 4 to 16 Instruction decoder Program counter 4 bit Q1.Why ALU is 8 bit ? Because the data is 8 bit so...
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    decoder for 8051

    can anyone tell me which decoder is used for 8051 microcontroller ? 4 bits can decode 16 things. 5 bits can decode to 32 things, 6 bits can decode 64 things. 8 bit can decode 256 things 16 bit can decode 65536 things etc, etc.. suppose I am using 16 bit input ,ram_rd_sel ,ram_wr_sel...
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