Answer:
Appearances
Explanation:
In your dashboard, click on Appearance → Customize → Widgets. Choose the location where you'd like to place the widget on your site. Common options here include the Footer and Sidebar, but this may be different depending on your theme..
Go to Appearance > Widgets in the WordPress Administration Screens. Choose a Widget and either drag it to the sidebar where you wish it to appear, or click the widget, (select a destination sidebar if your theme has more than one) and click the Add Widget button.
[ RevyBreeze ]
 
        
             
        
        
        
Answer:
They use principles of light to scan document
Magnetic scanning
Explanation:
 
        
             
        
        
        
Answer:
As you know the on going situation we are in, barcodes can be really useful for an example using them to check into a building that way when there is a infected person it is a really esay process to track down people that have been in that area.
 
        
             
        
        
        
Answer:
Implicit type casting means the type casting done by the compiler during compilation of program whereas Explicit type casting means the programmer explicitly type casts the variables. This is the difference implicit and explicit type casting. 
Explanation: 
Type casting means the conversion of one data type into another data type. There are two types of type casting. They are Implicit type casting and Explicit type casting.
<u>Implicit type casting:</u> The type casting which is done by the compiler during the compilation of a program. This occurs when we assigning smaller data type to larger data type and also both the data type are compatible. Below example clears the above concepts.
Ex:  
 

In the above example " i "  is " int " data type whereas  " l " is long data type but as we assigned the value of " i " to " l ". Here " int " and " long " are compatible data types and we assigned smaller data type ( int - i ) to larger data type  ( long - l ) implicit type casting occurs. 
<u>Explicit type casting:</u> The type casting which is done by the programmer explicitly to convert one data type into other data type. If we want to assign a value of larger data type to smaller data type explicit type casting is required. Below example clears the above concepts.
Ex: 

In the above example " d " is " double " data type whereas " l " is " long " data type. Here we are explicitly type casting to change larger data value ( double - d ) to smaller data value ( long - l ).  
 
        
                    
             
        
        
        
Answer:
numAccounts = SavingsAccount.numberOfAccounts
Explanation:
In object oriented programming, when you have created an object of class, you can create several instances (objects) from that class by referencing the className.classFeild.  In this instance SavingsAccount is the class name and
numberOfAccounts is a feild (or data member). to create a new numAccount,  we use the syntax as above in the answer