Answer:
A bar code reader scanner captures the pattern in a barcode and sends it to the computer, where special software translates the pattern into meaningful data.
Explanation:
A barcode reader is a handheld device that captures and reads information that is contained in a bar code. It consists of a scanner, a decoder and a cable that connects the barcode reader into a computer. This scanner works by directing a beam or red light across the black and white elements of a barcode. This amount of light energy that is reflected back is measured and converted into electrical energy which is then converted into readable data by the decoder and forwarded to a computer.
 
        
             
        
        
        
Answer:
ethics
Explanation:
The set of principles that guides the ordering of values is known as ethics. Scenario, challenge, or event in which a person has to choose between various morally correct or bad behaviors. The moral principles and norms that govern conduct in the business world.  The rules or norms that regulate a specific individual or a group's behavior. It is also the ethical ideas and standards that society accepts as right or good as opposed to immoral or undesirable.
 
        
             
        
        
        
The answer is firewall. It is a network security device that observes inbound and outbound network traffic and chooses whether to allow or block specific traffic based on a well-defined set of security rules. Firewalls have been a first line of protection in network security for over 25 years. The firewall present a barrier between measured and secured internal networks that can be trusted and untrusted outside networks, for example the Internet. A firewall can be software, hardware, or even both.
        
             
        
        
        
Answer:
 Normal Margin is fit on the page. The default margins for Microsoft Word is normal margin.                                       
Explanation:
The paper visual effect give the document’s theme and quality. Margins send visual effects. Making a document right helps you to send the right message to readers. Use a small paper and adding a border.
You can change the page layout that people notice first with size, orientation, and margins. 
Page margins make your document readable. Margins make the document more readable, make text look inviting, and given reviewers.
With narrower margins, you can reduce more words on-page.
To many words in a line make it difficult to read the document. 
Margins are of many types
- Normal Margin
 - Narrow margins
 - Moderate margins
 - Wide margins
 
 
Normal gives an equal inch to all sides of the page.
Narrow margins give little room to each column.
 Average margins squeeze words from left and right.
 Wide gives space when proofing the manuscript.
 
 
        
                    
             
        
        
        
Answer:
Slaves are the people thought as conquered People
Explanation:
In ancient times, slaves works without any remunerations. These people are captured or purchased by rich peoples. Their whole life spends in slavery. The people who are also prisoners of wars worked as slaves for their rest of the life.