(IGCSE) Computer Studies Oct/Nov 2013 paper 1 variant 3
Question paper found on page 12 / 20 pages total, pdf
12 10 (a) The following pseudocode was written to input 1000 dates. 1 2 3 4 5 For Examiner's Use count = 1 repeat input day, month, year count = count + 1 until count = 1000 (i) Describe why the loop only inputs 999 dates instead of 1000. [1] (ii) What needs to be changed or added to the above code
(IGCSE) Computer Studies Oct/Nov 2012 paper 1 variant 2
Mark scheme found on page 12 / 12 pages total, pdf
Page 12 Mark Scheme IGCSE – October/November 2012 Syllabus 0420 Paper 12 17 (a) sample program: x = 0: y = 0 input number while number < > -1 do if number > 1000 then x = x + 1 else if number < 1000 then y = y + 1 input number endwhile print x, y (1 mark) (1 mark) (
(IGCSE) Computer Studies Oct/Nov 2012 paper 1 variant 1
Mark scheme found on page 12 / 12 pages total, pdf
Page 12 Mark Scheme IGCSE – October/November 2012 Syllabus 0420 Paper 11 17 (a) sample program: x = 0: y = 0 input number while number < > -1 do if number > 1000 then x = x + 1 else if number < 1000 then y = y + 1 input number endwhile print x, y (1 mark) (1 mark) (
(IGCSE) Computer Studies Oct/Nov 2012 paper 1 variant 2
Question paper found on page 18 / 20 pages total, pdf
18 17 (a) Write an algorithm, using pseudocode or a program flowchart only, that: • • • For Examiner's Use inputs a series of positive numbers (-1 is used to terminate the input), outputs how many numbers were less than 1000 and outputs how many numbers were greater than 1000. [4] © UCLES 2012 0420/12/O/N/12
(IGCSE) Computer Studies Oct/Nov 2012 paper 1 variant 1
Question paper found on page 18 / 20 pages total, pdf
18 17 (a) Write an algorithm, using pseudocode or a program flowchart only, that: • • • For Examiner's Use inputs a series of positive numbers (-1 is used to terminate the input), outputs how many numbers were less than 1000 and outputs how many numbers were greater than 1000. [4] © UCLES 2012 0420/11/O/N/12
(IGCSE) Computer Studies Oct/Nov 2014 paper 1 variant 3
Question paper found on page 22 / 24 pages total, pdf
22 16 A customer wants to compare prices of 1000 items sold in two supermarkets (price1 and price2). Write an algorithm, using pseudocode or a flowchart, which: • • • • inputs the two prices for all 1000 items outputs how many items were more expensive in supermarket 1 outputs how many items were more expensive in supermarket 2 outputs the largest price difference ......
(IGCSE) Computer Studies Oct/Nov 2007 paper 1
Mark scheme found on page 9 / 11 pages total, pdf
Page 9 Mark Scheme IGCSE – October/November 2007 Syllabus 0420 Paper 01 15 (a) Any two advantages from: easier to know when to re-order automatic re-ordering easier/faster to update easier/faster to access information more up to date stock levels fewer mistakes takes up less storage space [2] (b) (i) Any one from: double entry visual check/comparison with original [1]
(IGCSE) Computer Studies Oct/Nov 2010 paper 1 variant 2
Mark scheme found on page 11 / 11 pages total, pdf
Page 11 Mark Scheme: Teachers’ version IGCSE – October/November 2010 Syllabus 0420 Paper 12 (c) Any one from: – stored maps out of date (instructions go to incorrect roads) – inaccurate positioning – loss of signal – errors in original data/setting up – sends vehicles down inappropriate routes – over reliance by driver on the sat nav [1] (d) Any one from: –
(IGCSE) Computer Studies Oct/Nov 2010 paper 1 variant 1
Mark scheme found on page 11 / 11 pages total, pdf
Page 11 Mark Scheme: Teachers’ version IGCSE – October/November 2010 Syllabus 0420 Paper 11 (c) Any one from: – stored maps out of date (instructions go to incorrect roads) – inaccurate positioning – loss of signal – errors in original data/setting up – sends vehicles down inappropriate routes – over reliance by driver on the sat nav [1] (d) Any one from: –
(IGCSE) Computer Studies May/June 2014 paper 1 variant 2
Question paper found on page 16 / 24 pages total, pdf
16 13 An algorithm has been written to check that code numbers are valid on input. They must be in the range 1000 to 9999. Five hundred codes are being entered and the percentage of entered codes which are incorrect is output. There is a flowchart on the opposite page. It has some statements missing. Complete the flowchart. Use statement numbers only, chosen from the list below.
(IGCSE) Computer Studies Oct/Nov 2013 paper 1 variant 3
Mark scheme found on page 7 / 13 pages total, pdf
Page 7 9 Mark Scheme IGCSE – October/November 2013 Syllabus 0420 Paper 13 (a) 8 [1] (b) (i) 1515 1801 (–1 mark for each error) [2] (ii) – – checks whether new goods have (yet) to be ordered to maintain stock levels (c) (Price of item ($) > 2) < - - - - 1 mark
(IGCSE) Computer Studies Oct/Nov 2007 paper 1
Question paper found on page 17 / 20 pages total, pdf
17 16 (a) Fuel economy for a car is found using the formula: Fuel Economy = For Examiner's Use Distance Travelled (km) Fuel Used (litres) What would be the Fuel Economy of a car travelling 40 km on 10 litres of fuel? [1] (b) The Fuel Economy for 1000 cars is to be calculated using the formula in Question 16(a). Write an
(IGCSE) Computer Studies Oct/Nov 2010 paper 1 variant 1
Question paper found on page 20 / 20 pages total, pdf
20 17 A school is doing a check on the heights and weights of all its students. The school has 1000 students. For Examiner's Use Write an algorithm, using pseudocode or a flowchart, which • • • inputs the height and weight of all 1000 students outputs the average (mean) height and weight includes any necessary error traps for the input of height and weight [5]
(IGCSE) Computer Studies Oct/Nov 2012 paper 1 variant 3
Question paper found on page 9 / 20 pages total, pdf
9 Complete the trace table for the following data: For Examiner's Use 1500, 1000, 100, 10, 999, 99, 2000, 5, -3, 0 C H T1 T2 T3 number OUTPUT [6] © UCLES 2012 0420/13/O/N/12 [Turn over
(IGCSE) Computer Studies Oct/Nov 2010 paper 1 variant 2
Question paper found on page 20 / 20 pages total, pdf
20 17 A school is doing a check on the heights and weights of all its students. The school has 1000 students. For Examiner's Use Write an algorithm, using pseudocode or a flowchart, which • • • inputs the height and weight of all 1000 students outputs the average (mean) height and weight includes any necessary error traps for the input of height and weight [5]
(IGCSE) Computer Studies Oct/Nov 2014 paper 1 variant 3
Mark scheme found on page 13 / 13 pages total, pdf
Page 13 Mark Scheme Cambridge IGCSE – October/November 2014 Syllabus 0420 Paper 13 16 Marking points: • • • • • • • • initialise largest and two totals control loop for 1000 items check if price 1 > price 2 and increment total 1 (inside loop) check if price 2 > price 1 and increment total 2 (inside loop) calculate price difference (inside loop)
(IGCSE) Computer Studies Oct/Nov 2008 paper 1
Mark scheme found on page 11 / 11 pages total, pdf
Page 11 Mark Scheme IGCSE – October/November 2008 Syllabus 0420 Paper 01 18 (a) customer code/borrower number/customer number [1] (b) Any three points from: computer reads record from book file compares date due back ……. ……. 11 th November 2008/this date if date due back < November 11 th …… ……. using borrower number/customer code/customer
(IGCSE) Computer Studies Oct/Nov 2003 paper 1
Question paper found on page 14 / 16 pages total, pdf
14 16 (a) Write an algorithm, using pseudocode or otherwise, which; • • • • inputs 50 numbers checks whether each number is in the range 1000 to 9999 outputs how many of the input numbers were out of range outputs the percentage of input numbers which were out of range. .................................
(IGCSE) Computer Studies Oct/Nov 2010 paper 1 variant 3
Question paper found on page 12 / 20 pages total, pdf
12 13 A spreadsheet has been set up to compare the monthly costs of five mobile phone networks. Normally a text message costs 2 cents and one minute of talk time costs 15 cents for all networks (100 cents = $1). A Network name Lemon Yodafone C-mobile O-3 T-world 1 2 3 4 5 6 7 B Monthly charge ($) 65 65 65 65
(IGCSE) Computer Studies Oct/Nov 2013 paper 1 variant 2
Mark scheme found on page 9 / 16 pages total, pdf
Page 9 Mark Scheme IGCSE – October/November 2013 Syllabus 0420 Paper 12 (8) 1 mark for error + 1 mark for suggested correction to error (max of FOUR errors) description of possible error suggested correction to error line 20 lowest = 0 lowest = 100 (or even bigger value) line 30 loop count is 1 to 100 count should be 1 to 1000
(IGCSE) Computer Studies Oct/Nov 2013 paper 1 variant 1
Mark scheme found on page 9 / 16 pages total, pdf
Page 9 Mark Scheme IGCSE – October/November 2013 Syllabus 0420 Paper 11 (8) 1 mark for error + 1 mark for suggested correction to error (max of FOUR errors) description of possible error suggested correction to error line 20 lowest = 0 lowest = 100 (or even bigger value) line 30 loop count is 1 to 100 count should be 1 to 1000
(IGCSE) Computer Studies Oct/Nov 2007 paper 1
Question paper found on page 15 / 20 pages total, pdf
15 (e) The following chart has been produced from the spreadsheet. For Examiner's Use 4500 4000 3500 3000 2500 2000 1500 1000 500 0 Value ($) Year 1 Value ($) Year 2 Value ($) Year 3 Value ($) Year 4 Which cells must have been selected to create and label the chart shown? [2]
(IGCSE) Computer Studies Oct/Nov 2009 paper 1
Mark scheme found on page 10 / 10 pages total, pdf
Page 10 Mark Scheme: Teachers’ version IGCSE – October/November 2009 Syllabus 0420 Paper 01 (c) Any two from e.g. destination airport starting airport name(s) of passenger(s) passport number/nationality special requirements number of passengers dates/times of flights cost of tickets full flight itinerary special offers information about the airlines information about flight facilities sort on cheapest/fastest routes/flights ability to check availability
(IGCSE) Computer Studies Oct/Nov 2008 paper 1
Question paper found on page 16 / 16 pages total, pdf
16 19 The manufacturing cost of producing an item depends on its complexity. A company manufactures three different types of item, with costs based on the following calculations: For Examiner's Use Item type 1: item cost = parts cost * 1.5 Item type 2: item cost = parts cost * 2.5 Item type 3: item cost = parts cost * 5.0 The company makes 1000 items
(IGCSE) Computer Studies Oct/Nov 2013 paper 1 variant 2
Question paper found on page 10 / 20 pages total, pdf
10 8 A piece of pseudocode was written to input 1000 positive numbers and then output the highest and lowest numbers. 10 20 30 40 50 60 70 80 90 highest = 0 lowest = 0 for count = 1 to 100 input number if number > highest then number = highest if number < lowest then number = lowest count = count + 1 next count
(IGCSE) Computer Studies Oct/Nov 2013 paper 1 variant 1
Question paper found on page 10 / 20 pages total, pdf
10 8 A piece of pseudocode was written to input 1000 positive numbers and then output the highest and lowest numbers. 10 20 30 40 50 60 70 80 90 highest = 0 lowest = 0 for count = 1 to 100 input number if number > highest then number = highest if number < lowest then number = lowest count = count + 1 next count
(IGCSE) Computer Studies May/June 2005 paper 1
Question paper found on page 6 / 16 pages total, pdf
6 6 The following spreadsheet shows the 2-Night Bargain Break holiday bookings during a three month period. A 1 B C D E F 2-Night Bargain Break Holiday Bookings 2 3 Priced at $ 100 4 Bookings 5 Hotel Nov Dec Jan Total Bookings Income ($) 6 7 Beach Resort 3 5 1 9 900 8 Oriental Hotel 7 8 5 20 2000 9 Palace Hotel 8 9
(IGCSE) Computer Studies Oct/Nov 2003 paper 1
Mark scheme found on page 11 / 11 pages total, pdf
Page 10 16 Mark Scheme INTERNATIONAL GCSE– NOV 2003 Syllabus 0420, 0421 (a) wrong = 0 for count = 1 to 50 input number if number < 1000 or number > 9999 then wrong = wrong + 1 endif next count percent = wrong * 2 output wrong, percent (accept flow charts but not essays) Paper 1 (1 mark) (1 mark)
(IGCSE) Computer Studies Oct/Nov 2011 paper 1 variant 1
Question paper found on page 20 / 20 pages total, pdf
20 17 (a) Write an algorithm, using pseudocode or flowchart only, which: • • For Examiner's Use inputs three numbers outputs the largest of the three numbers [3] (b) Write an algorithm, using pseudocode or flowchart only, which: • • inputs 1000 numbers outputs how many of these numbers were whole numbers (integers) (You may use INT(X) in your answer e.g.
(IGCSE) Computer Studies Oct/Nov 2011 paper 1 variant 2
Question paper found on page 20 / 20 pages total, pdf
20 17 (a) Write an algorithm, using pseudocode or flowchart only, which: • • For Examiner's Use inputs three numbers outputs the largest of the three numbers [3] (b) Write an algorithm, using pseudocode or flowchart only, which: • • inputs 1000 numbers outputs how many of these numbers were whole numbers (integers) (You may use INT(X) in your answer e.g.
(IGCSE) Computer Studies Oct/Nov 2011 paper 1 variant 3
Mark scheme found on page 11 / 11 pages total, pdf
Page 11 Mark Scheme: Teachers’ version IGCSE – October/November 2011 16 Marking points initialise variables correct loop control input (in correct place) correct check on type of weather (if, case, etc.) adding number of days of each type of weather check for the highest temperature check for the lowest temperature output (all items in the correct place) Sample algorithm c = 0: r = 0:
(IGCSE) Computer Studies Oct/Nov 2008 paper 1
Question paper found on page 12 / 16 pages total, pdf
12 15 A database has been produced showing solar system statistics. Name of planet Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto Distance from sun (x10 6 ) (km) 58 108 150 228 778 1427 2871 4497 5914 Number of moons 0 0 1 2 16 18 15 8 1 Maximum surface Number of temperature rings ( o
(IGCSE) Computer Studies Oct/Nov 2007 paper 1
Question paper found on page 14 / 20 pages total, pdf
14 14 The following spreadsheet shows how the value of certain items of computer equipment changes over time. Cells B8 and C2:E8 contain formulae. 1 A B C D E Equipment Value ($) Year 1 Value ($) Year 2 Value ($) Year 3 Value ($) Year 4 2 PC System 1600 800 400 200 3 Laptop Computer 2000 1000
(IGCSE) Computer Studies Oct/Nov 2006 paper 1
Mark scheme found on page 13 / 14 pages total, pdf
Page 13 (c) Mark Scheme IGCSE - OCT/NOV 2006 Syllabus 0420 Paper 1 Any three points from: number of cars in both directions are totalled computer compares this total ….. ….. with values stored in memory/simulation results changes lights/takes action if necessary if no data received, default timing is used [3] (d) Any one point from: all lights change to red/amber
(IGCSE) Computer Studies Oct/Nov 2011 paper 1 variant 3
Question paper found on page 16 / 20 pages total, pdf
16 12 A database has been set up to show details about countries. Part of the database is shown below. Country code CH IN PO BO TI BR RO SA ZA Country China India Poland Bolivia Tibet Brazil Romania Saudi Arabia Zambia Area Population (millions (millions) sq km) 9.6 1320 3.8 1150 0.3 39 1.1 9 1.2 2 8.5 192 0
(IGCSE) Computer Studies Oct/Nov 2012 paper 1 variant 3
Mark scheme found on page 6 / 12 pages total, pdf
Page 6 Mark Scheme IGCSE – October/November 2012 Syllabus 0420 (c) Any two from: e.g. - change font size/type - change font colour/type - use of columns - search and replace words Paper 13 [2] 9 C H T1 T2 T3 number 1 0 0 0 0 1500 2 1500 1 1000 2 100 3 4 1 5
(IGCSE) Computer Studies Oct/Nov 2009 paper 1
Mark scheme found on page 8 / 10 pages total, pdf
Page 8 Mark Scheme: Teachers’ version IGCSE – October/November 2009 Syllabus 0420 Paper 01 (d) Any two from: no film processing to be done/doesn’t run out of film/cost of buying film instantaneous checks camera won’t need manual emptying (e) (i) 400/0.4 = 1000 images alternative answer 400/0.0004 = 1 000 000
(IGCSE) Computer Studies Oct/Nov 2011 paper 1 variant 1
Mark scheme found on page 11 / 11 pages total, pdf
Page 11 Mark Scheme: Teachers’ version IGCSE – October/November 2011 Syllabus 0420 Paper 11 (d) Any two from: – processor should consume as little power as possible (thus prolonging the battery life) – processor should run as cool as possible (minimising problems associated with heat dissipation) – no fans needed to cool processor (thus reducing the load on the internal battery) [2] 17
(IGCSE) Computer Studies Oct/Nov 2011 paper 1 variant 2
Mark scheme found on page 11 / 11 pages total, pdf
Page 11 Mark Scheme: Teachers’ version IGCSE – October/November 2011 Syllabus 0420 Paper 12 (d) Any two from: – processor should consume as little power as possible (thus prolonging the battery life) – processor should run as cool as possible (minimising problems associated with heat dissipation) – no fans needed to cool processor (thus reducing the load on the internal battery) [2] 17
(IGCSE) Computer Studies May/June 2007 paper 1
Mark scheme found on page 12 / 12 pages total, pdf
Page 12 Mark Scheme IGCSE – May/June 2007 Syllabus 0420 Paper 01 19 General marking points: loop – 1 mark input in correct place – 1 mark checks on code – 1 mark correct use of if/then/else or case statements – 1 mark increment all totals – 1 mark error recognition/validation – 1 mark correct output in correct place – 1 mark [5] Sample program
(IGCSE) Computer Studies May/June 2009 paper 1
Mark scheme found on page 5 / 12 pages total, pdf
Page 5 8 9 Mark Scheme: Teachers’ version IGCSE – May/June 2009 Syllabus 0420 Paper 01 (a) any two from: need to re-train de-skilling possible loss of jobs/redeployment loss of social interaction [2] (b) any one from: reduced costs to the company because of e.g. fewer staff/less office space can offer 24/7 customer services can advertise/offer new services
(IGCSE) Computer Studies May/June 2006 paper 1
Question paper found on page 5 / 16 pages total, pdf
5 7 The spreadsheet shows the computer equipment on loan to a staff member in a company. Cells B13 and C7:E13 contain formulae. A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 B C D For Examiner's Use E PC Software Development Ltd Computer equipment on loan to: Ref: 2106 S. Harrison Item Year 1 Year 2 Year
(IGCSE) Computer Studies May/June 2008
Examiner report found on page 3 / 6 pages total, pdf
0420 Computer Studies June 2008 Question 12 Part (a) was very badly answered with very few candidates showing an understanding of basic pseudocode. This was a fairly straightforward question requiring only the basics of repeat … until and for … to loops. For example, count = 0 repeat input x count = count + 1 until count = 20 and, for count = 1 to 20 do input
(IGCSE) Computer Studies Oct/Nov 2008
Examiner report found on page 1 / 7 pages total, pdf
COMPUTER STUDIES 0420 Computer Studies November 2008 Paper 0420/01 Paper 1 General comments The standard of work from candidates was, in general, significantly lower than in previous years. Whilst there were two or three new style questions this year, the answers given in some of the more “traditional questions” were very disappointing. The areas of concern are discussed later under the individual question reviews. Candidates
(IGCSE) Computer Studies Oct/Nov 2003
Examiner report found on page 5 / 7 pages total, pdf
0420 Computer Studies November 2003 Question 14 (a) Many candidates scored two marks here for temperature sensor and pH/ acidity sensor. Quite a few just gave the word “sensor” which was not worth any marks. Other answers could include: ADC, DAC, actuators, etc. No marks were awarded for items such as heaters, printers, screens, etc. which did not answer the question. (b)