Answer:
Printer - displays text or pictures on paper
Scanner - creates a digital representation of paper
Optical Mouse - translates muscle movements onto a cursor
External hard drive - used for storing files
VOIP phone - places phone calls using the VOIP protocol
In this program, there are three variables: data, count, and value. In the first loop, a user is requested to enter the number of values to be later processed in the second loop. This number is requested repeatedly until the user gives a positive value. The variable data is used to store the latest input read, and there is no possibility for the program to guess what values the user will enter.
The variable value is used similarly in the second loop: it stores the latest input, and there is no known relation between its successive values.
The variable count, however, behaves very differently. Once it has been initialized its future values will be known exactly: it will step downwards one by one until it reaches its limiting value, i.e. zero.
In the following the variables data and value are said to have the role most-recent holder (as they store the latest value in some value succession - user input in this case), and the variable count is said to be a stepper. These roles occur in programs again and again. In fact, only ten roles are needed to cover 99 % of all variables in novice-level programs.
The production capacity in farming and animal husbandry has increase due to use of computer in agriculture field . There are less losses due to work are monitored by computer. By using computer in traditional field like agricultural field we can increase the productivity and minimize the error happen.
A. flashes o lights.................
