Usama

I forgot name of a game.

I used to play this mobile game on my Sony Ericsson w200i. It was a maze game with a top-down view. There were two characters(both girl). One was supposed to stay under light and if she got into darkness she dies. While the other character was to stay under darkness. We can shift to other character anytime and can use them simultaneously to stay alive and solve the maze. We could step onto a platform to raise the gates/doors. I think it was similar to Playdead's Inside.

Thats all i remember. I hope someone can come up with the name.

Thanks.

So i have made a two wheel self balancing robot using MPU6050, L298, Arduino Uno, BO wheels and BO motors and it worked perfectly. But after a couple of days my MPU6050 got defected. After i replaced MPU6050, one of wheel is working in both clockwise and anti-clockwise direction, but the other wheel is only moving in anti-clockwise direction. I have double checked the connections and components.

But im still unable to find the fault in it.

Find out the probability of error if a bipolar signal with rectangular shape of amplitude 10 volts and duration 10-1 s is detected using the matched filter assuming noise power spectral density N0 is 10-5.

c) Repeat a) assuming that orthogonal signals are being used for communication.

d) Why root raised cosine pulse shaping is performed?

e) What is the reason for performing matched filtering? Explain?

A) How much bandwidth is needed to support bit rate of 100 symbols per second assuming that the raised cosine pulse shaping is used with filter roll off equal to 0.5 and communication takes place in base band. 

B) Is bandwidth related to symbol rate or bit rate? 

C) Can we have symbol rate greater than bit rate? Why

Iam learning how to use Autocad and right now iam using Autocad 2019 on Macbook. I have seen many tutorial but they didnt solve my problem.

So I was already using matlab2013 on my previous laptop without any issue but now I shifted to Apple MacBook Pro and I tried installing the same version MATLAB 2013 on windows10 but I keep getting this error "Exception calling main" whenever I open the setup file.

I have also tried to install MATLAB 2009 but I keep getting the same error.

a) If crystal oscillator frequency is 1MHz. Make a delay subroutine which will generate

a delay of 800microseconds.

b) Write an assembly language code that will check the content of memory location

$139. If it is equivalent 5 put value 0x11 in it else put $22 in it.

c) The AVR’s Stack is as Big as its RAM Memory? (yes/no)

Write a code that will show “MPS-ROCK” on LCD using 8-bit data. You can write a program in assembly or C language.

A nuclear launch code in the form of numbers is made and its integrity is of highest priority so that it won't go into the wrong hands. Let those codes are ($12, $45, $09, $0B, $49, $0A, $21) is encrypted using a checksum key (As checksum key will only validate the authenticity of codes).

Part-A: Write a code that will take the above number as an input, store them, and then find the checksum key and validate the authenticity of the key.

Part-B If codes are changed and going to misuse, how will you detect and stop the launch. If you detect codes are tempered shut all necessary communication that stops the transmission of codes. (hint: use a port as a control port for communication control purpose)

Consider a 16MHz crystal oscillator is connected to AVR Atmega32. Find the value of a counter (use timer2) that needed to be initialized if a square wave is of 32 microseconds is generated. Use normal mode with a pre-scaler = 1:64

Write a program that will create a square wave of 40 % duty cycle on bit 5 port B.

assume crystal oscillator of 2 MHz is connected to the microcontroller, generate a delay 0.25 seconds use that delay to control the duty cycle. During the ON time switch on the LED connected to even pin of PORTD, while in OFF time switch on the LEDs connected to odd pins of PORTD. Also, show the calculation of 0.25 seconds delay subroutine.

y"+3y'+2.25y=-10e^-1.5x

while y(0)=1, y'(0)=0

y'+3+5.7y+6.5y^2=3

-ydx+xdy=0

y'sin(πx)=ycos(πx)

Q1) Two balls are randomly selected without replacement from a box containing three black balls numbered 1, 2, 3 and two white balls numbered 4 and 5. Assuming that all outcomes are equally likely. 

Find out the probabilities of following events.

a) Probability that the color of second ball is white.

b) Probability that the color of second ball is black.

c) Probability that both balls are black.

d) Probability that both balls are white.