Answer:
<u><em>Source data entry devices are used for audio input, video input and to enter the source document directly to the computer. Source data entry devices do not require data to be typed-in, keyed-in or pointed to a particular location.</em></u>
Explanation:
<span>Polymorphic message
Methods in different classes with a similar function are given the same name.
- Makes classes easier to use because programmers need to remember fewer method names.
- Employed as much as possible.
- Polymorphic message ex. is the toString method.</span>
Answer:
Subtraction
Explanation:
That is subtracting the values of two cells.
You know because of the "-" sign
