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Recent content by v.s.n.kumar

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    Xbee S6B wifi module configuration problem

    Hi, I'm trying to configure Xbee S6B wifi module using XCTU 64bit software. but I'm getting Error writing the following AT parameters -GW: status error -MK: status error -MY: status error Can anybody tell how to solve this problem.
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    Difference between interrupt & Exception

    what is the difference between thumb instruction set & thumb-2 instruction set.
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    Difference between interrupt & Exception

    Hi, Can anybody tell what is the difference between interrupt & Exceptions in embedded systems. I hear this the word exception in ARM. I know what is interrupt. but if both the words indicate the same meaning then why they are using the word Exception instead of interrupt in ARM-7.
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    Loud speaker output problem based on analog circuit

    It is negative voltage spike. when I turn off or turn on there is no spike. but when i turned on after some time it's come. it is not repeated at regular interval. time gaps between the spikes changes. The output of TSop1738 is 5v, the maximum value of spike is 0v.
  5. V

    Loud speaker output problem based on analog circuit

    When i connected the output(pin-3) of TSOP1738 to CRO , I saw there is a spike with out pressing remote. how can i reduce that spike in the output voltage of tsop1738. I have connected electrolytic capacitor 4.7 micro Farreds with negative to pin-2(v-in) & positive to pi-1(ground) of tsop1738...
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    Loud speaker output problem based on analog circuit

    I'm trying to design an analog circuit which is based on 555 timer or op-amps only. the main aim of my circuit is when I press a button from IR remote, the IR receiver TSOP1738 receives it. Every button on IR remote has different binary information. if i press 1 then i have to produce sound. if...
  7. V

    Loud speaker output problem based on analog circuit

    When I press a button in IR remote, the transmiter transmit modulated signal at 38khz. TSOP1337 recieves it.when receiver receives, a sound will generate in a speaker. If I press for long time,the intensity of sound must change. can u give any idea about this circuit by using Op-amps or 555...
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    Loud speaker output problem based on analog circuit

    Hi, If we give 11001101 continously to a speaker then it generates sound. My question is if I give 00111001 to it then it generates a different sound or not.
  9. V

    IR remote circuit design

    Hi, When I press a button in IR remote, the transmiter transmit modulated signal at 38khz. TSOP1337 recieves it.when receiver receives, a sound will generate in a speaker. If I press for long time,the intensity of sound must change. can u give any idea about this circuit by using Op-amps or...
  10. V

    How to calculate capacitor value

    Hi, I connected 12 volts,2 miiliamperes step down transformer to a Full wave bridge rectifier circuit.how to calculate the capacitor value for placing in between bridge rectifier & 7805 voltage regulator. & also I want to place another capacitor after 7805 voltage regulator. how to determine...
  11. V

    problem with reserved area memory

    Hi, For example if the processor has 11 address lines & maximum memory that we connect to it is 2k bytes. but if I connect only 1k byte of memory & remaining 1k is for reserved.then what happens if processor sends address which is in the reserved area & what the data comes in to the...
  12. V

    probelm on Extension of memory

    Hi, For example a processor has 11 address lines. so I connect 1k byte of RAM or ROM. but for 11 address lines,its maximum range is 2k bytes of memory. but what happens if processor sends 11bit address means more than 10 bit address(more than 1k byte access). & what it receives.
  13. V

    format specifier problem in c-language

    I know that the result is %d. but what is the reason for giving as %d
  14. V

    format specifier problem in c-language

    Hi, can anybody tell what is the result of below lines in c. main() { int i=0x90; printf("%%d",i); }
  15. V

    Without pointers how to read & write from an address

    Hi, I know how to read & write from an address by using pointers. but can anybody tell how to read & write from an address (ex:0x1000 or any number) without using pointers in c-programming
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