Bridging Activity for September A level Computer Science. Why do I need to complete a bridging activity?

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1 Why do I need to complete a bridging activity? The purpose of this activity is to aid your preparation for advanced level study and make the transition from GCSE study as smooth as possible. Some activities are written pieces of work, some are researchbased and some are practical. They should be completed to the best of your ability and they will give you the opportunity to start to showcase your talent for your chosen subjects. As these are compulsory activities, it is vital that you put in the time and effort to ensure they are completed to the highest standard. When should I hand this in? You should complete this activity for the start of your first lesson in September. How will I be given feedback? Feedback appropriate to the task will be given to you by your teacher. Summary of the activity Write a 300 word essay on Computer Hardware & Software Student Name (to be completed by the student) 1

2 Code & Algorithms: clearly you need to be able to program so attempt the following: Study the following code and answer the following questions: Program AlphaFurniture; Uses WinCrt; Var OFCode : Integer; // this is the code for office furniture Var Quantity, SCTotal, SCATotal, FCTotal, DSTotal, DLTotal, TOTAL : real; Var NumProd : Integer; Begin Writeln ('Swivel Chair Code =308'); Writeln ('Swivel Chair Arms Code = 460'); Writeln ('Filing Cabinet = 200'); Writeln ('Desk Small =305'); Writeln ('Desk Lamp =900'); Writeln('*******************************************'); Writeln('Select the item of furniture required'); Writeln('Input the furniture code '); for NumProd :=1 to 3 do begin Readln(OFCode); Case OFCode of 308 : Begin Writeln ('Swivel Chair price 57.90'); Writeln ('Input quantity'); readln(quantity); SCTotal := Quantity * 57.9; Writeln('Total is ', SCTotal :2:2); End; //Close Conditional Expression : Begin Writeln ('Swivel Chair Arms price 89.90'); Writeln ('Input quantity'); Readln (Qantity); SCATotal := Quantity * 89.9; Writeln('Total is ', SCATotal :2:2); End; //Close Conditional Expression 2} Question 1 In the following program identify the following writing the letter clearly next to the relevant section (using brackets where required): a) Two examples of an output b) Declaration of variables c) The start of an iteration or loop d) A comment line e) Two examples of an input f) The start and end of a select or if type statement g) A procedure or operation 2

3 h) Formatting i) Identify a variable which is a whole number Question 2 a) What does the extract from the program do? b) What is the code that will be input to select a Desk Lamp? c) Why is the variable Quantity declared as a decimal value? d) What does the loop do in this program? e) Why is formatting required in this program? f) Why would the code for the 'Swivel Chair Arms not work? 3

4 Question 3 Write out a program (using pseudo code or simplified English or in a programming language of your choice) which does the following: Write a program to input 2 numbers representing the length and width of a room in metres. Calculate and display the amount of flooring needed for the room in square meters, and the cost of the required amount of flooring, assuming the carpet for the room costs per metre. If the room is not carpeted but tiling is laid the price is Allow the user to select flooring type. Allow the user to select a number of rooms at the start of the program showing total cost at the end. Note: ensure you show variables 4

5 Section B Calculations Binary and Hexadecimal IN ALL CASES SHOW WORKING 1. Convert the decimal number 45 into binary. (2) Convert the binary number into decimal. (2) 3. Convert the decimal number 165 into hexadecimal. (2) 4. Convert the hexadecimal number B6 into decimal. (2) 5. Convert the hexadecimal number 9B into binary. (2) 5

6 6. Convert the binary number into hexadecimal. (1) Section C Writing Assessment Writing Assessment 300 Words Minimum (on a separate sheet which is word processed). Discuss the following components: 1) CPU 2) RAM 3) ROM 4) Different types of storage devices and their capabilities 5) What is the role of an operating system and how would you contrast that to application software? 6