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3 years ago

What are the differences between analog and digital signals?

1 answer:

4 0

Or a digital signal might be a discrete representation of an analog waveform. ... That's the big difference between analog and digital waves. Analog waves are smooth and continuous, digital waves are stepping, square, and discrete.

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To keep files organized, related documents are often stored in ____ (also called directories) located on the storage medium.

-Dominant- [34]

Answer:

Folder

Explanation:

8 0

2 years ago

Assume that the population of Mexico is 128 million and that the population increases 1.01 percent annually. Assume that the pop

horrorfan [7]

Answer:

//Define class

public class Main {

//define main method

public static void main(String[] args)

{

//declare and initialize the double type variable to 128

double mexico = 128;

//declare and initialize the double type variable to 323

double us = 323;

//declare and initialize the integer type variable to 0

int yr = 0;

//set the while loop to check which is greater

while (mexico < us)

{

//increment in the variable by 1

yr++;

//initialize in the variables acc. to the percentage

mexico *= 1.0101;

us *= 0.9985;

}

//print the following results

System.out.println("Population of the Mexico will be exceed the population U.S. in " + yr + " years");

System.out.println("Population of the Mexico will be " + mexico + " million");

System.out.println("and population of the U.S. will be " + us + " million");

}

Output:

Population of the Mexico will be exceed the population U.S. in81 years

Population of the Mexico will be 288.88435953355025 million

and population of the U.S. will be 286.0198193927948 million

Explanation:

Following are the description of the program.

Firstly, we define the class 'Main' and inside it, we define the main method.
Then, declare two double data type variables which are 'mexico' and 'us' and initialize in it to 128 and 323.
Declare integer data type variable 'yr' and initialize in it to 0.
Set the while loop and pass the condition to check that the variable 'mexico' is less than the variable 'us' then, increment in the variable 'yr' by 1 and multiply the variables 'us' and 'mexico' by the following percentage.
Finally, print the following results with the message.

6 0

3 years ago

Create a program asks a user for an odd positive integer. If the user gives and even number or a number that is negative it prom

KiRa [710]

Answer & Explanation:

//written in java

import java.util.Scanner;

public class Main {

public static void main(String[] args) {

// variable for number imput and for the output to

//to be calculated

int number, output = 0;

//a do while loop to first ask for user input

//and check if its a odd number and a positive integer

do {

System.out.println("Please enter a positive odd integer");

//scanner class to accept user input

Scanner input = new Scanner(System.in);

number = input.nextInt();

//the next line make sure input is a

// positive integer and also odd

//number

} while (number % 2 == 0 || number < 1);

//for to sum all value of odd numbers between

//1 and the inputted value

for (int i = 3; i < number; i = i + 2) {

output = output + i;

}

//print out output

System.out.println("sums of all the odd numbers between 1 and the " + number + " is " + output);

}

...............................................................................................................................................

Sample of the program output

> Please enter a positive odd integer

< 12

> Please enter a positive odd integer

< 13

> sums of all the odd numbers between 1 and the 13 is 35

6 0

3 years ago

2. Suppose a computer using direct mapped cache has 220 words of main memory and a cache of 32 blocks, where each cache block co

Advocard [28]

Answer:

(a) The block size = 16 words (b) the format for the sizes of the tag, block, and word fields are stated below:

Tag Block Offset

11 bits 5 bits 4 bits

(c)The memory address 0DB63 will map to 22nd block and 3 byte of a block. (d) The main advantage of the cache is, when the cache block is made larger or bigger then, there are fewer misses. this occur when the data in the block is used.

One of the disadvantage is that if the data is not used before the cache block is removed from the cache, then it is no longer useful. here there is also a larger miss penalty.

Explanation:

Solution

(a)The Cache of 32 blocks and the memory is word addressable

The main memory size is not stated, so let's consider it as 2^20

The main memory size = 2^20

The block size = 16 words

The Number of blocks = main memory size/ block size = 2^20/16. = 2^16= 64 K words.

(b) The Main memory is 2^20, which says it is 1 M words size and it requires 20 bits

Now,

From which 32 cache block requires 2^5, 5 bits and block size means offset requires 2^4, 4 bits

Thus, the sizes of the tag, block, and word fields are stated below:

Tag Block Offset

11 bits 5 bits 4 bits

(c)The hexadecimal address is 0DB63 , its binary equivalent is

0000 1101 1011 0110 0011

The tag = ( first 11 bits) = 0000 1101 101

block = ( next 5 bits ) = 1 0110

offset = ( next 4 bits ) = 0011

Therefore, the memory address 0DB63 will map to 22nd block and 3 byte of a block.

(d) The main advantage of the cache is that, when the cache block is made larger or bigger then, there are fewer misses. this occur when the data in the block is used.

One of the disadvantage is that if the data is not used before the cache block is removed from the cache, then it is no longer useful. here there is also a larger miss penalty.

3 0

3 years ago

Processor speeds are in bytes. True or False

Aneli [31]

Answer:

true

Explanation:

Mainly true, but partly false. There are two bits in a computer that supply speed: The processor (measured in hertz eg. 2Ghz Processor) and RAM (bits and bytes eg 2GB of RAM). The processor is more to do with the speed programs run and load at, and RAM let's you use lots of memory intensive programs at the same time, although this also comes down to the processor and vice versa. Hope I helped :)

5 0

3 years ago

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