IGCSE Computer Science Paper 2 Crossword: 7b Decomposition and Sub-systems (Modules 94–106)
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Date:
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Crossword
Read each clue and write the matching term in the grid. Numbers in brackets show the letters in each word.
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2
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9
10
Across
- 1. Data that goes into a system from a user, a sensor or a file, such as a typed name, a temperature reading or a line read from a stored file. (5)
- 6. Each sub-problem is tested on its own before being joined to the rest, so an error is traced to the part that causes it and only that part needs fixing, not the whole program. Word 5 of: ____ each sub-_______ __________ (10)
- 9. Data the solution must keep, in a variable, file or database, so it can be used again later. It is not the same as input or output. (7)
- 10. A smaller part of a computer ______ that does one job within the whole ______, such as the CPU, memory or storage in a computer. It is not the whole ______. Word 2 of: sub-______ (6)
Down
- 2. A small part of a bigger ______. It is easier to understand and solve than the whole, so splitting a ______ up makes it manageable and makes mistakes easier to find. Word 2 of: sub-_______ (7)
- 3. Each sub-system can be split into smaller sub-______, level by level, until every part does one simple job. A sub-system at one level is a system at the next. Word 1 of: _________ of sub-_______ (9)
- 4. An action or calculation a solution carries out on its data, such as adding a total, comparing a value with a limit, sorting or searching, or making a decision. (7)
- 5. Word 4 of the term in 3 Down: _________ of sub-_______ (7)
- 7. The result a solution gives out, such as a message on screen, a printout, a sound or a signal that switches a device on or off. (6)
- 8. Word 1 of the term in 6 Across: ____ each sub-_______ __________ (4)
Answer Key
IGCSE Computer Science Paper 2 · Modules 94–106
1I
N
2P
U
T
R
O
3H
B
I
4P
L
5S
6S
E
P
A
R
A
T
E
L
Y
7O
R
O
M
S
U
A
C
8T
T
9S
T
O
R
A
G
E
E
E
P
C
10S
Y
S
T
E
M
U
H
S
T
S
T
Y
Across
1INPUT — Data that goes into a system from a user, a sensor or a file, such as a typed name, a temperature reading or a line read from a stored file.
6SEPARATELY — Each sub-problem is tested on its own before being joined to the rest, so an error is traced to the part that causes it and only that part needs fixing, not the whole program. Word 5 of: ____ each sub-_______ __________
9STORAGE — Data the solution must keep, in a variable, file or database, so it can be used again later. It is not the same as input or output.
10SYSTEM — A smaller part of a computer ______ that does one job within the whole ______, such as the CPU, memory or storage in a computer. It is not the whole ______. Word 2 of: sub-______
Down
2PROBLEM — A small part of a bigger ______. It is easier to understand and solve than the whole, so splitting a ______ up makes it manageable and makes mistakes easier to find. Word 2 of: sub-_______
3HIERARCHY — Each sub-system can be split into smaller sub-______, level by level, until every part does one simple job. A sub-system at one level is a system at the next. Word 1 of: _________ of sub-_______
4PROCESS — An action or calculation a solution carries out on its data, such as adding a total, comparing a value with a limit, sorting or searching, or making a decision.
5SYSTEMS — Word 4 of the term in 3 Down: _________ of sub-_______
7OUTPUT — The result a solution gives out, such as a message on screen, a printout, a sound or a signal that switches a device on or off.
8TEST — Word 1 of the term in 6 Across: ____ each sub-_______ __________