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Explain the function of the pins PSEN and EA of 8051.
PSEN: PSEN stands for program store enable. In 8051 based system in which an external ROM holds the program code, this pin is linked to the OE pin of the ROM.
EA :EA stands for external access. When the EA pin is linked to Vcc, program fetched to addresses 0000H through 0FFFH are directed to the internal
ROM and program fetches to addresses 1000H by FFFFH are directed to external ROM/EPROM. When the EA pin is grounded, all addresses fetched by program are directed to the external ROM/EPROM.
What do you mean by Macro? MACRO : A sequence of instructions to that a name is assigned is termed as macro. Macros and subroutines are same. Macros are utilized for short se
Critical Rate of Rise of Current The maximum rate of increase of current during on state which the SCR can tolerate is called the critical rate of rise of current f
Q. An n-channel enhancement MOSFET operates in the active region with very large V A , v GS = 6V, V = 4 V, and i = 1 mA. Calculate K.
Explain the Cylindrical or Round Rotors? All synchronous machines have a similar stator design and it is actually the rotor construction that makes them different. The rotor is
explain compensation and charge neutrality in GaAs
Q. Explain Continuous-data and discrete-data systems? A continuous-data system is one in which the signals at various parts of the systemare all functions of the continuous-tim
Q. A particular BJT has a nominal value of α 0.99. Calculate the nominal β.If α can easily change ±1%, compute the percentage changes that can occur in β.
Develop and execute a PSpice program to solve for the current I 2 in Figure.
Consider the point-to-point radio link introduced in problem 9. By how much must transmit power be increased to maintain the maximum BER of 10-5 if the channel is flat Rayleigh-fad
Ask question #Minimum 10gzhahahaau0 words accepted#
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