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#KEYBOARD CLASS 9 SOLUTIONS HOW TO#
#KEYBOARD CLASS 9 SOLUTIONS UPDATE#

It does not perform any kind of data processing.ĪLU (Arithmetic logic unit): This unit performs the arithmetic calculations like addition, subtraction, multiplication and division and logical operations like comparison, selection and matching of data. Random access memory (RAM) is a part of the storage unit.Ĭontrol unit: This unit controls the working of other parts of the computer. Storage unit: This unit stores the information and supplies it to other units when required. It controls the working of all the parts of computer, such as keyboard, mouse, etc. It consists of various smaller components such as motherboard, hard disk, random access memory (RAM), etc. It is the heart and brain of the computer. These parts along with their functions is described below: (iii) Microsoft powerpoint: It enabled me to make interactive presentations for various topics present in science.Ĭ.

#KEYBOARD CLASS 9 SOLUTIONS HOW TO#

(ii) Microsoft excel: It is helpful in making me understand how to plot graphs between various physical quantities present in science. (i) Calculator: It helps in verifying the calculations done in subjects like physics and chemistry. Following are the application softwares which I find useful while learning science:

It has enabled the broadcasting of information related to agriculture to farmers living in remote areas to improve their agriculture productivity and sustainability.ī.

It has enabled scientists gather information related to happening in the space.

A prototype of new research in the field of science can be build in various program softwares which run on a computer.

Some experiments and concepts in science can be demonstrated effectively using simulations and animations.

It provides information on almost every topic.

With the help of internet, one can collect scientific information and also share them with the help of emails or other social networking sites.

It has enabled to predict and forecast weather conditions by studying meteors.

do-while loop is an exit-controlled loop.A. The role and importance of information communication in science and technology are following: If the condition is true, loop will perform the next iteration otherwise program control will move out of the loop. for and while loops are entry-controlled loops.Īn exit-controlled loop checks the condition after executing its body. Only if the condition is true, the program control enters the body of the loop.

Body of the loop which consists of the statements that needs to be repeatedly executed.ĭefine the following with their constructs:Īn entry-controlled loop checks the condition at the time of entry.

#KEYBOARD CLASS 9 SOLUTIONS UPDATE#

An update expression to modify the loop control variable after every iteration.A condition-loop will iterate as long as this condition remains true.An initial value for the loop control variable.The following parameters are commonly used in a for loop: What are the parameters needed to create a for loop? Name the different types of loop statements. It is executed at the end of each iteration.

Once it becomes false, execution of the loop is stopped. Loop iterates as long as this condition remains true. i <= 12 is the condition part of the for loop, it is executed before the start of each iteration.

int i = 1 is the initialization part of the for loop, it is executed only once when the loop gets executed for the first time. This for loop prints the table of 2 till 12. Which of the following statements uses a case called default? How many times the loop, for (i=1 i++), will execute, if there is no statement to terminate the loop? To find the sum of whole numbers upto 10, a loop runs: Which of the following loop checks the condition first and then execution begins? Which of the following statement uses multiple branches? To execute a loop 10 times, which of the following statement satisfies: Which of the following loop does not execute even once if condition is false in the beginning? Which of the following statement is exit controlled loop? When the statements are repeated sequentially a number of times in a program, the construct is known as: Chapter 8 Iterative Constructs In Java Class 9 - APC Understanding Computer Applications with BlueJ