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3 years ago

10

These devices: monitor, earphone, speakers are examples of what? Input devices Storage devices Output devices All answer are cor

rect

Computers and Technology

2 answers:

Arlecino [84]3 years ago

6 0

Output devices. Because they give you some sort of information from the PC.

solmaris [256]3 years ago

4 0

They are examples of Output devices.

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The Monte Carlo method is commonly used to approximate areas or volumes of shapes. In this problem, we will use Monte Carlo to f

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Answer:

import numpy as np

import matplotlib.pyplot as plt

def calculate_pi(x,y):

points_in_circle=0

for i in range(len(x)):

if np.sqrt(x[i]**2+y[i]**2)<=1:

points_in_circle+=1

pi_value=4*points_in_circle/len(x)

return pi_value

length=np.power(10,6)

x=np.random.rand(length)

y=np.random.rand(length)

pi=np.zeros(7)

sample_size=np.zeros(7)

for i in range(len(pi)):

xs=x[:np.power(10,i)]

ys=y[:np.power(10,i)]

sample_size[i]=len(xs)

pi_value=calculate_pi(xs,ys)

pi[i]=pi_value

print("The value of pi at different sample size is")

print(pi)

plt.plot(sample_size,np.abs(pi-np.pi))

plt.xscale('log')

plt.yscale('log')

plt.xlabel('sample size')

plt.ylabel('absolute error')

plt.title('Error Vs Sample Size')

plt.show()

Explanation:

The python program gets the sample size of circles and the areas and returns a plot of one against the other as a line plot. The numpy package is used to mathematically create the circle samples as a series of random numbers while matplotlib's pyplot is used to plot for the visual statistics of the features of the samples.

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3 years ago

In 4-bit two's complement representation, what is the binary encoding of the number -5?

Katena32 [7]

Answer:

a) 1011

Explanation:

In 4 bit two's complement representation, the first bit is the sign bit.

If the sign bit is 1, the number is negative.

If the sign bit is 0, the number is positive.

What is the magnitude of the sign bit?

In n-bit two's complement representation, the magnitude of the sign bit is:

$2^{n-1}-1$

So, in 4-bit two's complement representation, the magnitude of the sign bit is:

$2^{4-1}-1 = 8$

Since the number is negative, the value of this bit is -8.

The other bits are magnitude bits, positive.

We have that the sum of these bits must be -5, and we already have -8. So what should be the value of these last 3 bits?

First, i am going to solve this equation to find the decimal value of the last three bits.

$-5 = -8 + x$

$x = 3$

So, the last three bits are:

$3_{10} = (011)_{2}$

The binary encoding of the number -5 is:

a) 1011

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3 years ago