Time:2 Hrs.Maximum Marks: 75

Transcription

1 Time:2 Hrs.Maximum Marks: 75 Note:1) All questions are compulsory. 2) All questions carry equal marks. Q.1 A. State whether the following statements are True or False : (Attempt any Eight). 1. The third Generation of computers used integrated circuits. T 2. The speeds of Second Generation computers were measured in milli-seconds. F 3. Operating systems were developed in the third generation of computers. F 4. Notepad is not a utility software T 5. The format character %c is used to represent integers. F 6. = and = = is the same in C language. F 7. Break statement takes the control out of the program. T 8. Nested if( ) means one if( ) within another if( ). T 9. The for(x=0; x<=5; x++) will repeat 5 times F y is called a pre-increment of the value of y T Q.1 B. Select the appropriate option from the following : (Attempt any Seven). 1. Memory cards use less power have no moving parts. a) Flash b) IC c) hard disk d) DVD 2. Second generation computers are based on. a) Artificial Intelligence b) Transistors c) Vacuum tubes d) Integrated circuits 3. A formatted input function is a) scanf( ) b) printf( ) c) put( ) d) getchar( ) 4. The Diamond shape in the flowchart signifies a) Processing b) Decision making c) Input / Output d) Start / End 5. Which of these operating systems does not provide a graphical user interface a) Windows XP b) Linux c) Android d) Microsoft DOS 6. Which of these is not a programming language? a) C b) C++ c) Linux d) JAVA 7. The logical operator is written in C as a) && b) ++ c) d) 8. Which of the following is a system software? a) Microsoft Word b) Microsoft Windows XP c) Tally d) Corel Draw 9. Using a single if( ) we can check at the most alternatives a) 1 b) 3 c) 2 d) The hexadecimal number system has a base of a) 2 b) 8 c) 10 d) 16

2 Q.2 Answer the following questions : a. Explain the different kind of secondary memory available 1)HardDisk 2) Solid State Storage a) Flash memory cards b) USB Flash drives 3) Optical Disk b. Convert the following binary numbers to decimal i) ii) i) = 1 x x x x x x 2 0 = 1x32 + 1x = = 49 (110001)2= (49)10 ii) = 1 x x x x x x x 2 0 = = = 0 x x 2-2 = 0 x (0.5) + 1 x (0.25) = 0.25 ( )2 = (78.25)10 c. Differentiate between Analog and Digital Computers 1)Analog computers receive and process data in a continuous form,whereas digital computers do so in the discrete form. 2) Analog computers depend upon the quality of its components for gaining accuracy whereas digital computers are restricted by their size. 3) Analog computers perform the operations simultaneously whereas digital perform sequentially. 4)Analog computers have limited uses whereas digital computer find a variety of business and industry. d. Explain characteristics of a computer 1)Speed 2)Accuracy 3)Diligence 4)Storage 5)Versatility 6)Automation 7)No Common Sense

3 Q.3 Answer the following questions : a. What is E-Commerce? Why is it so popular now? Give the few E-Commerce sites name. Electronic commerce is also called E-commerce.It is the buying and selling of products or services over the Internet. E-Commerce is also use other technologies such as , mobile devices and telephones. example: Amazon, Google Play, Flipkart, Myntra etc. b. Write an algorithm to find the average of two numbers. Step 1: Enter the first number (A) Step 2: Enter the second number (B) Step 3: Calculate total TOTAL= A+B Step 4:Calculate Average AVG= TOTAL / 2 Step 5: Display Average c. Draw the flowchart that read two numbers and prints the larger number START INPUT X,Y IS X >Y? NO BIG = Y YES BIG = X PRINT BIG STOP

4 d. Discuss the applications of computer in relation with social media, website, Advertising Social media: Social media sites like Facebook and Twitter are being used extensively by businesses and keeping in touch with their customers. Websites: Globalisation of businesses attracting new customers, create brand awareness, customer support and other activites are all possible through websites of a business. Advertising: Website are the new medium for advertising. Companies can use the targeted advertising feature of websites----easy availability of presentation--- marketing document can be prepared easily Q.4 Answer the following questions : a. Explain the different storage classes in C. a)automatic storage class b)register storage class c)static storage class d)extern storage class b. Write a program to input the cost Salvage value and estimate life in years of an asset & display the annual depreciation when Depreciation = ( Cost Salvage ) / Life float c,sv,lf,d; printf("enter cost,salvage value and life in year"); scanf("%f%f%f",&c,&sv,&lf); d=(c-sv)/lf; printf("depreation=%.2f\n",d); c. What is the output of the following C program? void main() char i= A ; printf("%c\n",i); printf("%4c\n",i); printf("%-4c\n",i); printf("%04c\n",i); printf("%c\n",i); A printf("%4c\n",i); bbba printf("%-4c\n",i); Abbb printf("%04c\n",i); bbba d. What is the output of the following C program? int t=400, m=200; float x=125.8, y=35.76; printf( %8d %8d\n, t, m); printf( %+10.3f %10.3f\n, x, y); bbbbb400bbbbb200 bb bbbbb35.760

5 Q.5 Answer the following questions : a. Write a program in C to calculate and display the sum of int i=1, s=0; while(i<=100) s+=i; i++; printf( Sum=%d\n,s); int i=1, s=0; while(i<=100) s+=i; i++; printf( Sum=%d\n,s); b. Sales tax is calculated on the basis of sales as follows: Sales Sales tax First 5,000 2% Next 20,000 5% Excess 8% Write a C program to input the bill no.(b) and Sales Amount(s) and Display the Bill No. Sales Amount, Sales tax (t), Total Amount (ta). int b; float s,t,tax; printf("enter the bill number and sales amount"); scanf("%d%f,&b,&s); if(s<=5000) t=s*.02; else if(s>5000 && s<=25000) t=(s-5000)* *.02; else t=(s-25000)* * *.05; tax=s+t; printf("bill no=%d\t sales amount =%.2f\n",b,s); printf("sales tax =%.2f\t total amount=%.2f\n",t,tax); c. Write short notes on Any Threeof the following giving suitable examples: (15) 1) The continue statement The continlue statement is used to by pass a group of statement inside a loop based upon some condition Eg.: continue; 2) for ( ) loop There are three statements inside the for loop separated by semicolons. The first statement give initial value, second statement is condition and third statement increases/decreases the value Eg.: for(intial value; condition; Increment/decrement) Statements;

6 3) while ( ) loop In the while loop the condition is checked first if this condition is satisfied the statement within the loop are executed. This continues till the condition is not satisfied. Eg. While(condition) program statement; program statement; 4) nested if in situations where there are many condition to be evaluated and accordingly execute different set of statement Nested if are used. Eg.: if(condition) statements else if(condition) statements else statements 5) switch( ) Ans. It is used when there are multiple alternatives to be checked as in nested if( ). Each alternative is represented using a case statement Eg.: switch(expression) case value 1: program statements; break; case value 2: program statements; break; default; program statements; break; (as per general form check the example) X-----X-----