Search:

Type: Posts; User: ahmedsaber

Search: Search took 0.01 seconds.

  1. Closed: TCP Protocol: stages of a large TCP message transmission via ethernet stack

    Hi All,

    I'm confused about how Ethernet stack works exactly if we have an application needs to send a 20k message via tcp protocol where:
    1 - in SoAd module, shall we create a buffer for the 20k...
  2. Closed: Accteptance and discarding of messages based on their destniation addresses

    In Ethernet networks, the MAC layer is the first layer to detect the destination address of the received message.

    my questions: is that means that the transceiver shall take a copy of each message...
  3. Closed: The ARP Request Timeout for a non esixting destination

    Hi All,

    what is stated in the standard for ARP Protocol,
    If the Destination is not exist, shall the sender sends the arp request for a specific time or shall it retries the for a specific number...
  4. Closed: looping through repeated items of array with only one for

    hi all , in C :

    if i have an array contains repeated scattered items , and i need to make this array has no repeated elements but i ,must use only one for loop , how can i do this ?
  5. Closed: Re: where are constants string literals stored in memory of microcontroller ?

    @andre_teprom

    regarding Const variables : i know what you wanna say that we can with syntax store any variables in any memory
    with using keyword eeprom and flash at the variable declaration ...
  6. Closed: where are constants string literals stored in memory of microcontroller ?

    microcontroller flash memory divided into
    code segment // to store the code itself
    .rodata segment
    startup segment // to store the startup code

    my question is

    ...
  7. Replies
    1
    Views
    3,724

    Closed: how semaphore and mutex are implemented ?

    hello all;

    i know completely Concept of semaphore and mutex and difference between them

    but, i don't know how they implemented , are they both disable interrupts and scheduler to implement...
  8. Closed: difference between callback concept and normal calling concept

    hi all
    I'm so confused

    we know that all functions defined as global so we can call and use any function inside any block without passing it as argument

    why we use Function callback concept...
  9. Replies
    7
    Views
    1,130

    Closed: Re: UART and RS-232 Relationship

    why we need to use RS ? if we need to make a communication between two Micro controllers containing UART modules why we don't simply use two wires between the uart module?
  10. Replies
    7
    Views
    1,130

    Closed: Re: UART and RS-232 Relationship

    still i'm so confused about differentiation between Rs generally and the protocol itself
    e.g
    if i wanna to make serial comm between two MC's with UART where and what is the role of the uart...
  11. Replies
    7
    Views
    1,130

    Closed: UART and RS-232 Relationship

    hey all

    i need some help please

    i know that UART is a h.w device represents a communication protocol
    but
    1 - what is RS-232 ? is it protocol ? or just interface ? what is meant by...
  12. Closed: booting steps of micro controller ( no O.S)

    hi all

    can any one help me with the booting steps of micro controller including explanation of startup code and boot-loader
  13. Replies
    5
    Views
    1,284

    Closed: Re: howcan we increase EEPROM Endurance

    how can i reduce the cycle to optimal ?
  14. Replies
    5
    Views
    1,284

    Closed: howcan we increase EEPROM Endurance

    every EEPROM has a limited no of write/ erase

    how can we increase life-time for EEPROM ?
  15. Closed: Physical partions of Microcontroller Ram

    hey

    i know that the ram divided to many sections like .data , .bss , heap , stack

    my question so simple

    1 - this partition is physically ? and each program allocates as it needs from each...
  16. [General]Closed: why Fosc always divided by 4 befor using the prescalar ?

    hi Everyone

    i'm so confused

    in general in any MC , always i found that the Fosc divided by 4 before using the prescalar

    every equation uses Fosc/4 not Fosc

    can anyone help me ?
  17. Closed: [Moved] How to Install Mentor Calibre 2004 on VM with Centos 5

    Hi everyone

    i'm working on Centos 5 on VM

    i need to install Mentor Calibre 2004

    Can any one help me with the steps ?

    Please .
  18. Closed: What is difference between dc gain and ac gain ?

    Hi Everyone

    What is difference between dc gain and ac gain ?


    It is said that op amp gain up dc and ac. lets say op amp gain is 10.
    Does it mean that an 10mVac fluctuating on a 10Vdc, would...
Results 1 to 18 of 21