حل واجبات الجامعة العربية المفتوحة O544321455 - OO966544321455
ايميل : [email protected]
سكايبي: a_al_shora
واتس اب: OO966544321455
Arab Open University
Faculty of Computer Studies
M150 Data, computing and information
M150A
TMA01 – Fall 2013/2014
Cut-off date: 14-Dec-13
Total marks: 80
Arab Open University
Faculty of Computer Studies
M150 Data, computing and information
Question 1 [20 marks]
1. Read section 8.2 of the M150 course companion (You should have had a copy of it with the course material and you can also view a soft copy of it in the course CD ROM 1).
a. Briefly define the term plagiarism. [2]
b. How can you avoid plagiarism when writing your TMAs? [2]
2. Explain the difference between the Internet and the . [4]
3. Define a search engine. Give examples on two search engines you use. [4]
4. Representations play a central role in facilitating communication by establishing a relationship between some form and some meaningful subject to some convention; mention the two conditions for effective representation. [4]
5. From your understanding of the term “complex representation”, briefly explain why traffic signs are considered to be complex representations?
Explain the advane of complex representations using the traffic signs as an example. [4]
Question 2 [20 marks]
1. Any feature of the analogue world can be taken inside the boundary of the computer using two-steps process. Mentions the two steps with brief explanation giving an example that illustrates the steps. [6]
2. Show all the steps required to convert the binary value 111000101 to its decimal representation. [4]
3. Show all the steps required to convert the decimal value 1980 to its octal representation. [4]
4. Consider an image of size 1000 X 720 pixels which requires 2160000 bytes to be stored inside the computer. Find the number of bits used to represent each pixel, the pixel amplitude and the coloring system used for the image. [6]
Question 3 [20 marks]
1. What is the function of the following: [3]
a. Control Unit.
b. Main Memory.
c. Compiler.
2. Use truth tables to show whether the following two Boolean expressions are alent or not. [6]
NOT (A AND NOT B) NOT A OR B
3. The following flowchart diagram shows a loop structure program. [11]
a. From the diagram, specify: The condition, the loop body, and any instruction(s) that is (are) not in the loop body.
b. How many times will the loop be executed?
c. What is the exact output after these instructions have been executed?
You need to draw a simple tracing table that shows how you got your answer.
d. What will be the output if the condition "NOT (a>10)" is replaced by " NOT (a>10) AND (b>1)"?
Question 4 [20 marks]
1. a. Write program to calculate area and volume of a cube. The program should work according to the following specifications: [6]
−Read the edge length of a cube.
−Calculate the area and volume of the cube using the following formulas:
Area = 6 *(edge length)2
volume = (edge length)3
−Print the edge length, area and volume in the output
b. Run your program with two different values of edge length. In your Solution insert two screenshots showing the different resulted output.
2. a. Using nested if-else statement, write program that works according to the following specifications: [14]
– Ask the user if he wants to buy a "pc" or a "laptop". Read the answer from the user and store it in a variable.
– If the user selected a "laptop" then ask the user to select which color he wants "white" or "black". Read the answer from the user and store it in a variable.
– Calculate the price of the user selection as follows:
- PC: 1700$.
- Black laptop: 2500$.
- White laptop: 3000$.
– Give the following discount on the price and calculate the discounted price as follows:
- PC: 20%.
- Black laptop: 15%.
- White laptop: 10%.
– Print the user selection, price and discounted price in the output
– Assume that all strings used in the program and entered by a user are in small letters.
b. Test your program and run it to make sure it works properly. In your Solution insert three screenshots for the output:
– One showing the case when the user selected to buy a PC.
– One showing the case when the user selected to buy a black laptop.
– One showing the case when the user selected to buy a white laptop.
حل واجبات الجامعة العربية المفتوحة O544321455 - OO966544321455
ايميل : [email protected]
سكايبي: a_al_shora
واتس اب: OO966544321455
