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Flura [38]
3 years ago
10

What is PCM system? essay

Computers and Technology
1 answer:
brilliants [131]3 years ago
7 0

A PCM system consists of a PCM encoder (transmitter) and a PCM decoder (receiver). The essential operations in the PCM transmitter are sampling, quantizing and encoding. All the operations are usually performed in the same circuit called as analog-to digital convert Early electrical communications started to sample signals in order to multiplex samples from multiple telegraphy sources and to convey them over a single telegraph cable. The American inventor Moses G. Farmer conveyed telegraph time-division multiplexing (TDM) as early as 1853. Electrical engineer W. M. Miner, in 1903, used an electro-mechanical commutator for time-division multiplexing multiple telegraph signals; he also applied this technology to telephony.

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Match each of the following steps of SDLC development to its position in the development process.
Arisa [49]

Answer:

Step One - problem/opportunity identification  (V)

Step Two - Analysis (III)

Step Three - Design (II)

Step Four - Development (I)

Step Five - Testing and Installation (IV)

Explanation:

In the field of software development, or systems engineering, SDLC which refers to software development cycle refers to a systematic way of building software applications, it shows unique stages with the outcome of each stage dependent on the previous, step has a unique task which range from the planning, analysis, development, testing and installation of the information system.

5 0
4 years ago
What is the name of a computer or application program that intercepts user requests from the internal secure network and then pr
defon
A proxy server is a server that intercepts user requests from the internal secure network and then processes that request on behalf of the user.
The proxy server can be a computer or application program<span> that gets the requests from clients and seeks resources from other </span>servers. It is a <span>intermediary point between the end user and the backbone network.</span>
8 0
3 years ago
Indentation is useful to make the document easier to read. To increase the indentation of the paragraph, you press the increase
jeka94

Answer:

The correct answer to this question is given below in the explanation section.

Explanation:

The correct answer is Home.

Indentation is useful to make the document easier to read. To increase the indentation of the paragraph, you press the increase indentation in the   <u>Home</u> tab.

you can increase/ decrease indentation in Home tab under the Paragraph groups of command.

Othe options are not correct because:

View tab has settings related to how the document looks like. Insert tab has settings related to the insertion of image, shape, pages, tables, illustration, and links, etc into a document. The review tab allows you to review the document with different available settings.

4 0
3 years ago
Which formula is properly constructed
kirill115 [55]

Answer:

Option 4 is correct ,=(B2+C9)

Explanation:

In excel a formula starts with an equal sign followed by the expression.

In first option the formula is incorrect inside the brackets. where 4 is equating to bracket. In 2nd option opening and closing brackets are not same. First closing bracket is missing an opening bracket. In third option all the formula is correct except the part where # is used in formula. Hash tags cannot be used in formula as a value. Here in option D  B2 and C9 are cell in excel, whereas parentheses are only used for better readability.

7 0
3 years ago
2.17.5 coders answers
BlackZzzverrR [31]

Answer:

start();

if(colorIs(Color.blue)){

paint(Color.red);

if(frontIsClear());

move();

}else{

if(colorIs(Color.red)){

paint(Color.blue);

if(frontIsClear());

move();

}

}

if(colorIs(Color.blue)){

paint(Color.red);

if(frontIsClear());

move();

}else{

if(colorIs(Color.red)){

paint(Color.blue);

if(frontIsClear());

move();

}

}

if(colorIs(Color.blue)){

paint(Color.red);

if(frontIsClear());

move();

}else{

if(colorIs(Color.red)){

paint(Color.blue);

if(frontIsClear());

move();

}

}

if(colorIs(Color.blue)){

paint(Color.red);

if(frontIsClear());

move();

}else{

if(colorIs(Color.red)){

paint(Color.blue);

if(frontIsClear());

move();

}

}

if(colorIs(Color.blue)){

paint(Color.red);

if(frontIsClear());

move();

}else{

if(colorIs(Color.red)){

paint(Color.blue);

if(frontIsClear());

move();

}

}

if(colorIs(Color.blue)){

paint(Color.red);

if(frontIsClear());

move();

}else{

if(colorIs(Color.red)){

paint(Color.blue);

if(frontIsClear());

move();

}

}

if(colorIs(Color.blue)){

paint(Color.red);

if(frontIsClear());

move();

}else{

if(colorIs(Color.red)){

paint(Color.blue);

if(frontIsClear());

move();

}

}

if(colorIs(Color.blue)){

paint(Color.red);

if(frontIsClear());

move();

}else{

if(colorIs(Color.red)){

paint(Color.blue);

if(frontIsClear());

move();

}

}

if(colorIs(Color.blue)){

paint(Color.red);

if(frontIsClear());

move();

}else{

if(colorIs(Color.red)){

paint(Color.blue);

if(frontIsClear());

move();

}

}

if(colorIs(Color.blue)){

paint(Color.red);

if(frontIsClear());

}else{

if(colorIs(Color.red)){

paint(Color.blue);

if(frontIsClear());

}

}

function start(){

}

Q. 5.1.3: Move to Wall

Ans:

function start(){

while(frontIsClear()){

move();

}

}

I apologize if its incorrect

5 0
2 years ago
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