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3 years ago

Convert each of the following 8-bit 2's-complement numbers to decimal form. (16 points) a) 01001000 b) 01010101 c) 10101010

Computers and Technology

2 answers:

kherson [118]3 years ago

7 0

Answer:

a) 72

b) 85

c) -86

Explanation:

A 2's-complement numbers is converted to decimal form by multiplying each instance of 1 by 2^(position -1) and adding the sub-results.

a) 01001000 =>

1* 2^(7-1) + 1*2^(4-1) = 64+8 = 72

b) 01010101 =>

1* 2^(7-1) + 1*2^(5-1) + 1*2^(3-1) + 1*2^(1-1) = 64+16+4+1 = 85

c) 10101010

1's complement of the given number by bit inversion is 01010101

2's complement is obtained by adding 1 to the 1's complement.

=01010110

In decimal this is : 1*2^(7-1)+1*2^(5-1)+1*2^(3-1)+1*2^(2-1) = 64+16+4+2 = 86

So the original number is negative of this = -86

Tju [1.3M]3 years ago

4 0

Answer:hsgshh

Explanation:

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A drowsy cat spots a flowerpot that sails first up and then down past an open window. The pot is in view for a total of 0.50 sec

GaryK [48]

Answer:

2.342m

Explanation:

Given

Time = 0.5 s

Height of Window = 2m

Because the pot was in view for a total of 0.5 seconds, we can assume that it took the cat 0.25 seconds to go from the bottom of the window to the top

Using this equation of motion

S = ut - ½gt²

Where s = 2

u = initial velocity = ?

t = 0.25

g = 9.8

So, we have.

2 = u * 0.25 - ½ * 9.8 * 0.25²

2 = 0.25u - 0.30625

2 + 0.30625 = 0.25u

2.30625 = 0.25u

u = 2.30625/0.25

u = 9.225 m/s ------------ the speed at the bottom of the pot

Using

v² = u² + 2gs to calculate the height above the window

Where v = final velocity = 0

u = 9.225

g = 9.8

S = height above the window

So, we have

0² = 9.225² - 2 * 9.8 * s

0 = 85.100625 - 19.6s

-85.100625 = -19.6s

S = -85.100625/19.6

S = 4.342

If 4.342m is the height above the window and the window is 2m high

Then 4.342 - 2 is the distance above the window

4.342 - 2 = 2.342m

6 0

3 years ago

QUESTION 2 Fruit is an enumerated type with values apple, banana, grape, and orange, in that order. Which of the following state

Llana [10]

Answer:

Option A i.e., snack = Fruit.orange;

Explanation:

It is the user-defined data type which is mainly used to initialize the names or titles to integral constants so in the following statement 'Fruit' is the enumerate data type function and its values are the followings given in the statement, 'snack' is the variable of the function 'fruit' that is an enum type, so the initialization is done by the following type in the Java Programming Language.

6 0

3 years ago

Define the missing function. licenseNum is created as: (100000 * customID) + licenseYear. Sample output:

Juliette [100K]

Answer:

#include <iostream>

using namespace std;

class DogLicense{

public:

void SetYear(int yearRegistered);

void CreateLicenseNum(int customID);

int GetLicenseNum() const;

private:

int licenseYear;

int licenseNum;

};

void DogLicense::SetYear(int yearRegistered) {

licenseYear = yearRegistered;

}

void DogLicense::CreateLicenseNum(int customID) {

licenseNum = (100000 * customID) + licenseYear;

}

int DogLicense::GetLicenseNum() const {

return licenseNum;

}

int main() {

DogLicense dog1;

dog1.SetYear(2014);

dog1.CreateLicenseNum(777);

cout << "Dog license: " << dog1.GetLicenseNum() << endl;

return 0;

}

Explanation:

You can see the whole code above, but let me explain the fixed function.

void DogLicense::CreateLicenseNum(int customID) {

licenseNum = (100000 * customID) + licenseYear;

}

The function header is already declared in the class. It takes customID as a parameter. To find out the lisenseNum, we need to apply the given formula (100000 * customID) + licenseYear.

6 0

4 years ago

Read 2 more answers

How does the team know what to work upon during the iteration? (1 correct answer)

andrezito [222]

Answer:

Explanation:

In iteration, the entire team participates. A list of backlog and upcoming tasks is made and plan for the execution of these tasks is decided mutually.

6 0

3 years ago

A data set includes data from 500 random tornadoes. The display from technology available below results from using the tornado l

EastWind [94]

Answer:

The answer is:

$H_0:\mu=2.2\\H_1:\mu> 2.2$

Explanation:

$H_0:\mu=2.2\\H_1:\mu> 2.2$

The test value of statistic t= $\frac{\bar x-\mu}{\frac{s}{\sqrt{n}}}$

$=\frac{2.31688-2.2}{0.206915}\\\\=0.56$

The value of P = P(T>0.56)

=1-P(T<0.56)

=1-0.712

=0.288

Since the P value exceeds its mean value (0.288>0.05), the null assumption must not be rejected. Don't ignore H0.
This assertion, it mean length of the tornado is greater than 2.2 miles also isn't backed by enough evidence.

6 0

3 years ago