Recent content by samaaa

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    Questions about charging lithium batteries (to prolong battery life)

    Hi, I want to know what is the proper methods to prolong lithium battery life: When Should I recharge the battery(at any level 90%, 70 or 40 etc)? Should I charging it fully at 100%? is true that discharging battery below 20% once each month is useful to boost battery life?
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    How to record two signals simultaneous(by using ADC) ?

    i know that i am using the hard way, i do that because my supervisor want me to do that. the main noise is come from electrical 50 Hz, even when i removed it, the noise still large value(about 0.1 to 0.2 V) yes i want to record a row data. yes i understand the aliasing issues , i will...
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    How to record two signals simultaneous(by using ADC) ?

    ok, let me explain: ECG signal is obtained by using preamplifier as figure below: i want to record ECG signal but without using preamplifier, first i will record the two signals come from right and left arms, then inside the computer(by using matlab) i will obtain the ECG signal...
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    How to record two signals simultaneous(by using ADC) ?

    yes i read it, i understand that this chip use one ADC for each channel i am not sure, but may be i need about 1 micro second difference between sampling the two signals not less than 200 Hz. i will search for these questions
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    How to record two signals simultaneous(by using ADC) ?

    OK, if ADC "simultaneous sample and hold" of 20 bits is unavailable: can i use two ADC chips, to record the two signals? can i ensure that the two signals will be sampled in the same time exactly?
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    How to record two signals simultaneous(by using ADC) ?

    Hi: I need to record a two analog signals, by using an ADC(of 20 bits resolution or higher), the two signals are very weak signals of signal to noise ratio about -30 db, so the two signals are very effective by the noise. the problem is : how to record these two signals at the same...
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    Question about turing machine

    that help,thank you:smile:
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    Question about turing machine

    I read information said that: the turing machine can only execute one program the universal turing machine is Re-programmable machine the information here: http://www.cs.rpi.edu/~moorthy/Courses/modcomp/slides/Universal_Turing.ppt
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    Question about turing machine

    yes that help, but if the turing machine can execute any "program", that mean it can simulate any other turing machine , so that mean any turing machine we can called it universal turing machine!!!
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    Question about turing machine

    Hi: I read many articles about turing machine,but i still confused:confused: is a turing machine can only execute one program(hardwired) ? or it can execute many programs(like a conventional computer)? i asking about turing machine as shown in figure blew(not asking about universal TM...
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    A question about Qubit (number of states)

    thank you for this information now i understand how the Qubit works :smile:
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    A question about Qubit (number of states)

    i will give example: if we use the direction of Electron spin to represent the Qubit,spin up= 1 spin down=0 each electron could be spin up and down simultaneously (two states at the same time) but if we have 3 Qubits, we will get a 8 states simultaneously , that mean each Qubit has a 8...
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    A question about Qubit (number of states)

    i don't understand :confused: should i study quantum theory carefully to understand the qubit ? or i just need the basic concept of this theory ?
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