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Dovator [93]
3 years ago
14

Thiết kế biểu đồ thực thể liên kết và tập lược đồ cơ sở dữ liệu quan hệ cho các bài toán quản lý sau:

Computers and Technology
1 answer:
Paladinen [302]3 years ago
3 0

Answer:

sorry please write in English than i help.you i don't understand your language

You might be interested in
A nonpipelined system takes 300ns to process a task. The same task can be processed in a 5-segment pipeline with a clock cycle o
Vladimir79 [104]

Answer:

Pipelined architecture is 1.667 times more speedy than non pipelined architecture.

Explanation:

There are five stages to to complete an instruction to execute in pipeline architecture. as

Stage 1:  Instruction Fetch

Stage 2: Instruction Decode

Stage 3: Execute

Stage 4: Memory Access

Stage 5 : Write Back

The pipeline architecture processed instruction as given below. Each Stage take 1 clock cycle, which is represented as CC.

                Stage 1           Stage 2         Stage 3         Stage 4            Stage 5

I1:              1cc                  2cc                 3cc                4cc                   5cc

I2              2cc                 3cc                  4cc               5cc                   6cc

I3              3cc                  4cc                 5cc              6cc                    7cc

I4              4cc                 5cc                  6cc              7cc                    8cc

each four Instructions set takes 8 Clock Cycles.

I5              9cc                  10cc                11cc               12cc                 13cc

I6              10cc                 11cc                  12cc             13cc                 14cc

I7              11cc                  12cc                 13cc              14cc                 15cc

I8              12cc                 13cc                  14cc              15cc                16cc

.

.

.

I97:             193cc            194cc              195cc              196cc               197cc

I98             194cc             195cc             196cc               197cc               198cc

I99            195cc             196cc              197cc              198cc               199cc

I100         196cc                197cc             198cc            199cc                 200cc

<u>Pipelined architecture Time Calculation</u>

So in pipeline architecture 100 instructions takes 200 clock cycles to execute.

1 Clock Cycle time period is = 60ns.

200 Clock Cycle =  60ns * 200 = 12000 ns

<u>Non Pipelined architecture Time Calculation</u>

1 task Time period= 300ns

100 task time period = 100 * 300 =  30000 ns

The difference between pipelined and non pipelined architecture time period is = 30000 - 12000 = 18000 ns

<u>Speedup ratio</u>

<em>Speed up ratio= 30000/18000 =  1.667</em>

7 0
3 years ago
Take the average of some numbers. Show all the numbers that are below average. You can assume that there will not be more than 2
olchik [2.2K]

Here is code in java.

import java.util.*; // import package

class Main //  creating class

{

public static void main (String[] args) // main method

{

Scanner br=new Scanner(System.in); // scanner class for input

       int []a=new int[20]; // declaring array

       int count=0,x,j; // creating variable

       int sum =0;

       System.out.println("Enter a weight (0 to stop):");

       x=br.nextInt(); // taking input

while(x!=0) // iterating over the loop

       {

           a[count] = x;

           count++;

           System.out.println("Enter a weight (0 to stop):");

           x=br.nextInt();

}

       for( j=0;j<count;j++) // iterating over the loop

       {

       sum+=a[j];

       }

       double avg = sum/(double)count;

       System.out.println("The total is: "+sum);

       System.out.println("The average is: "+avg);

       System.out.println("Here are all the numbers less than the average: ");

     for( j=0;j<count;j++) //  // iterating over the loop

       {

           if(a[j]<avg)

           System.out.print(a[j]+" ");

       }

}

}

Explanation:

First create an object of "Scanner" class to read input from the user.

Create an array of size 20, which store the number given by user.Ask user

to give input and keep the count of number in the variable "count". If user

give input 0 then it will stop taking input.And then calculate sum of all the

input.It will calculate average by dividing the sum with count and print it.

It will compare the all elements of array with average value, if the element

is less than average, it will print that element.

Output:

Enter a weight (0 to stop):

1

Enter a weight (0 to stop):

2

Enter a weight (0 to stop):

3

Enter a weight (0 to stop):

4

Enter a weight (0 to stop):

5

Enter a weight (0 to stop):

6

Enter a weight (0 to stop):

7

Enter a weight (0 to stop):

8

Enter a weight (0 to stop):

9

Enter a weight (0 to stop):

10

Enter a weight (0 to stop):

0

The total is: 55

The average is: 5.5

Here are all the numbers less than the average:

1 2 3 4 5

6 0
3 years ago
What is the function of the NOS? Select all that apply.
Zigmanuir [339]

Answer:

.network management

Explanation:

pls need brainliest

3 0
3 years ago
Read 2 more answers
When you merge business letters, how many total documents will you have when you are finished with the merge process?
dlinn [17]

Answer:

You will have one letter for every receiver on the table.

Explanation:

In a new Microsoft Word paper, click on the Mailings label, and in the Start Mail Merge collection, agree on Start Mail Merge.

Agree on Step-by-Step Mail Merge Wizard.

Choose your paper model.

Choose the opening paper.

Preferred beneficiaries.

Address the report and attach your custom entries.

6 0
3 years ago
Read 2 more answers
What is the name of the function below?<br><br> function go(){<br> alert("hello everybody");<br> }
labwork [276]

Answer:

It’s Java script I think and it makes something say hello everybody

Explanation:

6 0
3 years ago
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