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Aloiza [94]
3 years ago
11

How do I center images in HTML. Also I need to have one image lay over another. How do I do this in HTML?

Computers and Technology
1 answer:
11111nata11111 [884]3 years ago
5 0
HTML isn't really used for this anymore, it's  done via CSS (Cascading Style Sheets). On the web currently, HTML pretty much just describes what to be displayed, CSS describes how it's to be displayed and JavaScript is used to provide function to a web page.

In HTML, you could use: align="center" as an attribute of the img tag to center it. Now it's preferable to use text-align: center CSS for the object containing the image (a div or p).

Positioning things on top of each other brings in z-axis and position CSS. Check out the CSS tutorial at http://www.w3schools.com . It's free.
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3. List and explain FIVE (5) types of services performed by<br>operating system?​
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Memory Management
Processor Management
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7 0
3 years ago
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Describe how you could obtain a statistical profile of the amount of time spent by a program executing different sections of its
Mazyrski [523]

Answer:

Explanation:

It can be said that the best way to obtain such a statistical profile would be to issue a periodic timer interrupt, then you would simply need to monitor which what code was running when the interruption took place. This information is especially helpful to the programmers as it would allow them to optimize the specific sections of the code that are consuming the most CPU resources, and thus making the overall program more efficient.

7 0
3 years ago
Drag each label to the correct location. Each label can be used more than once. Match the device to the port through which it co
son4ous [18]

Answer:

Mouse - USB

Monitor - display port, HDMI, and thunderbolt port

External hard drive - USB and thunderbolt port

Flash drive - USB

Explanation:

A computer mouse is an input device used to interact with a computer system. It connects with the computer through the USB port.

A Monitor is an output device that is used to display information on a computer system. It can be connected to the system through the display ports, HDMI, and the thunder port.

The External hard drive is a storage device that holds data for a long period of time. It has adapters to connect to the computer through the USB ports or thunderbolt ports. The flash drive is similar in function to the hard drive but small in size and storage space. It only connects with the computer through USB ports.

5 0
3 years ago
It takes 2 seconds to read or write one block from/to disk and it also takes 1 second of CPU time to merge one block of records.
Alexxx [7]

Answer:

Part a: For optimal 4-way merging, initiate with one dummy run of size 0 and merge this with the 3 smallest runs. Than merge the result to the remaining 3 runs to get a merged run of length 6000 records.

Part b: The optimal 4-way  merging takes about 249 seconds.

Explanation:

The complete question is missing while searching for the question online, a similar question is found which is solved as below:

Part a

<em>For optimal 4-way merging, we need one dummy run with size 0.</em>

  1. Merge 4 runs with size 0, 500, 800, and 1000 to produce a run with a run length of 2300. The new run length is calculated as follows L_{mrg}=L_0+L_1+L_2+L_3=0+500+800+1000=2300
  2. Merge the run as made in step 1 with the remaining 3 runs bearing length 1000, 1200, 1500. The merged run length is 6000 and is calculated as follows

       L_{merged}=L_{mrg}+L_4+L_5+L_6=2300+1000+1200+1500=6000

<em>The resulting run has length 6000 records</em>.

Part b

<u><em>For step 1</em></u>

Input Output Time

Input Output Time is given as

T_{I.O}=\frac{L_{run}}{Size_{block}} \times Time_{I/O \, per\,  block}

Here

  • L_run is 2300 for step 01
  • Size_block is 100 as given
  • Time_{I/O per block} is 2 sec

So

T_{I.O}=\frac{L_{run}}{Size_{block}} \times Time_{I/O \, per\,  block}\\T_{I.O}=\frac{2300}{100} \times 2 sec\\T_{I.O}=46 sec

So the input/output time is 46 seconds for step 01.

CPU  Time

CPU Time is given as

T_{CPU}=\frac{L_{run}}{Size_{block}} \times Time_{CPU \, per\,  block}

Here

  • L_run is 2300 for step 01
  • Size_block is 100 as given
  • Time_{CPU per block} is 1 sec

So

T_{CPU}=\frac{L_{run}}{Size_{block}} \times Time_{CPU \, per\,  block}\\T_{CPU}=\frac{2300}{100} \times 1 sec\\T_{CPU}=23 sec

So the CPU  time is 23 seconds for step 01.

Total time in step 01

T_{step-01}=T_{I.O}+T_{CPU}\\T_{step-01}=46+23\\T_{step-01}=69 sec\\

Total time in step 01 is 69 seconds.

<u><em>For step 2</em></u>

Input Output Time

Input Output Time is given as

T_{I.O}=\frac{L_{run}}{Size_{block}} \times Time_{I/O \, per\,  block}

Here

  • L_run is 6000 for step 02
  • Size_block is 100 as given
  • Time_{I/O per block} is 2 sec

So

T_{I.O}=\frac{L_{run}}{Size_{block}} \times Time_{I/O \, per\,  block}\\T_{I.O}=\frac{6000}{100} \times 2 sec\\T_{I.O}=120 sec

So the input/output time is 120 seconds for step 02.

CPU  Time

CPU Time is given as

T_{CPU}=\frac{L_{run}}{Size_{block}} \times Time_{CPU \, per\,  block}

Here

  • L_run is 6000 for step 02
  • Size_block is 100 as given
  • Time_{CPU per block} is 1 sec

So

T_{CPU}=\frac{L_{run}}{Size_{block}} \times Time_{CPU \, per\,  block}\\T_{CPU}=\frac{6000}{100} \times 1 sec\\T_{CPU}=60 sec

So the CPU  time is 60 seconds for step 02.

Total time in step 02

T_{step-02}=T_{I.O}+T_{CPU}\\T_{step-02}=120+60\\T_{step-02}=180 sec\\

Total time in step 02 is 180 seconds

Merging Time (Total)

<em>Now  the total time for merging is given as </em>

T_{merge}=T_{step-01}+T_{step-02}\\T_{merge}=69+180\\T_{merge}=249 sec\\

Total time in merging is 249 seconds seconds

5 0
3 years ago
___ allows you to select a consistently colored area without having to trace its outline.
Nezavi [6.7K]

Answer:

Magic Wand Tool

Explanation:

4 0
4 years ago
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