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computing p2 GCSE > 2 > Flashcards

2 Flashcards

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1
Q

things that keep a program maintained?

A

comments

indentation

suitable variable names

sub programs

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2
Q

what is defensive design?

A

anticipates how users might misuse their program then attempt to prevent that

ensure code is well maintained

reduce errors through testing

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3
Q

two types of errors?

A

logic error

syntax error

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4
Q

what is a syntax error?

A

when the compiler/interpreter doesnt understand part of the code because it doesnt follow the programming language

causes the whole code to not run

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5
Q

what is a logic error?

A

when the compiler or interpreter is able to run the program but it does something unexpected

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6
Q

what are the two types of testing?

A

iterative testing

final testing

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7
Q

what is iterative testing?

A

testing the program while it is being developed

repeating a section of code

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8
Q

what is final testing?

A

testing the whole program when it is finished to check it works as intended

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9
Q

what is normal data?

A

what the user is likely to input

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10
Q

what is boundary data?

A

values at the limit of what the program can handle

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11
Q

what is invalid data?

A

inputs with the correct dats type that should be rejected by the program

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12
Q

what is erroneous data?

A

incorrect data type that should be rejected by the program

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13
Q

what is a trace table?

A

give a simple way of testing if code works correctly

keeps track of values and variables as you go through the code

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14
Q

what is a translator?

A

translates the code from high level to low level for the computer to read

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15
Q

example of high level language?

A

python

CC+

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16
Q

example of low level language?

A

machine code

assembly language

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17
Q

what type of code do computers only understand?

A

machine code
1s and 0s

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18
Q

two types of translators?

A

compilers

interpreters

19
Q

what is a compiler?

A

translates a high level language directly into machine code

creates one executable file

20
Q

what is an interpreter?

A

take each instruction and call sub routines to carry out that instruction

SIMPLE:

translates and runs the source code one instruction at a time and doesn’t create an executable file

21
Q

what does IDE stand for?

A

integrated development environment

22
Q

what is an IDE?

A

a piece of software that provides features to help a programmer develop their program

23
Q

examples of IDE’s?

A

error diagnostics

syntax highlighting

automatic indents

24
Q

what is error diagnostics?

A

helps the programmer find where they made a mistake

25
Q

what is syntax highlighting?

A

displays different variables of the code in colours

26
Q

what is computational thinking?

A

steps taken to find the best solution to a complex problem

27
Q

what are the three types of computational thinking?

A

decomposition

algorithmic thinking

abstraction

28
Q

what is decomposition?

A

breaking a complex problem down into smaller more manageable problems to solve individually

29
Q

what is algorithmic thinking?

A

a logical way of getting the problem to the solution

30
Q

what is abstraction?

A

removing useless details from a problem and focusing on the important parts

31
Q

what is pseudocode?

A

not an actual programming language but follows a similar structure to roughly read like one

shows steps without displaying finer details (syntax)

32
Q

advantages of pseudocode?

A

quick and easy to write

easy to understand for beginners

easy to convert into any programming language

33
Q

what is a flowchart?

A

diagram used to represent data in a program

34
Q

why are flowcharts important?

A

help programmers develop the most efficient coding because they can clearly see where the data is going to end up

35
Q

start/stop

A

rounded rectangle

36
Q

input/output

A

parallelogram

37
Q

process

A

rectangle

38
Q

decision

A

diamond

39
Q

arrow

A

arrow

40
Q

diamond

A

decision

41
Q

input/output

A

parallelogram

42
Q

rounded rectangle

A

start/stop

43
Q

rectangle

A

process

computing p2 GCSE (2 decks)

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