AS Level Computer
Science 2026 | Study
Guide, Practice Questions,
Answers, Rationales &
Exam Review | Complete
Ethics Study Guide
Updated 2026 Questions and Answers
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Included
,State what an algorithm is A series of steps that are needed to be performed in order to perform a task
Why is it important for algorithms to be in the correct So that it can run correctly without any errors
order?
What is the purpose of a sub-step? To break down a step in the algorithm so that it is clearer and easier to follow.
Most algorithms have 3 parts to it..They are. Input. Process. Output
A condition in an algorithm... allows for an algorithm to be solved in different ways.
Why use conditions in an algorithm. It may make the task easier or faster to complete.
A condition in an algorithm is made up of three steps which IF.THEN.ELSE
are.
Another name for a condition is called... Selection
Another name for a loop is Repetition or Iteration
"How many ways can you express an algorithm and what are they?",3.1. Psuedo Code2. Structured English3. Flow Chart
What is the shape of an input/output in a flow chart? Parallelogram
What is the shape for a condition/selection in a flow chart? Kite
, Which is the shape for a loop/repetition/iteration in a flow Eclipse
chart?
What is the structured english for assigning a value for Set weight to 100
giving someone the weight of 100
There are 3 ways to use negative numbers in Binary? Magnitude1's Complement2's Complement
What are they?
State the problems with using the magnitude method It leads to calculation errors due to the fact it has a positive and negative zero.It
struggles to calculate positive and negative numbers.
State the difference between 2's Complement and 1's 2's complement of a binary number is 1 added to the 1's complement of the binary
Complement Binary number.
State what is meant by Structured English A subset of English Language that consists of command statements used to
describe an algorithm.
State what is meant by Pseudocode A way of using keywords and identifiers to describe an algorithm without following
the syntax of a particular programming language.
State what is meant by Flowchart Shapes linked together to represent the sequential steps of an algorithm
State what is meant by Assignment A value is given a name (identifier) or the value associated with a given identifier is
changed.
State what is meant by Selection "Under certain conditions some steps are performed, otherwise different (or no)
steps are performed."
State what is meant by Repetition A sequence of steps is performed a number of times. This is known as iteration or
looping.
State what is meant by Input/Process/Output "Many problems we try to solve with a computer involve data which can be inputted,
processed, or outputted."
Science 2026 | Study
Guide, Practice Questions,
Answers, Rationales &
Exam Review | Complete
Ethics Study Guide
Updated 2026 Questions and Answers
100% Verified Exam Prep and Comprehensive
Rationales
Included
,State what an algorithm is A series of steps that are needed to be performed in order to perform a task
Why is it important for algorithms to be in the correct So that it can run correctly without any errors
order?
What is the purpose of a sub-step? To break down a step in the algorithm so that it is clearer and easier to follow.
Most algorithms have 3 parts to it..They are. Input. Process. Output
A condition in an algorithm... allows for an algorithm to be solved in different ways.
Why use conditions in an algorithm. It may make the task easier or faster to complete.
A condition in an algorithm is made up of three steps which IF.THEN.ELSE
are.
Another name for a condition is called... Selection
Another name for a loop is Repetition or Iteration
"How many ways can you express an algorithm and what are they?",3.1. Psuedo Code2. Structured English3. Flow Chart
What is the shape of an input/output in a flow chart? Parallelogram
What is the shape for a condition/selection in a flow chart? Kite
, Which is the shape for a loop/repetition/iteration in a flow Eclipse
chart?
What is the structured english for assigning a value for Set weight to 100
giving someone the weight of 100
There are 3 ways to use negative numbers in Binary? Magnitude1's Complement2's Complement
What are they?
State the problems with using the magnitude method It leads to calculation errors due to the fact it has a positive and negative zero.It
struggles to calculate positive and negative numbers.
State the difference between 2's Complement and 1's 2's complement of a binary number is 1 added to the 1's complement of the binary
Complement Binary number.
State what is meant by Structured English A subset of English Language that consists of command statements used to
describe an algorithm.
State what is meant by Pseudocode A way of using keywords and identifiers to describe an algorithm without following
the syntax of a particular programming language.
State what is meant by Flowchart Shapes linked together to represent the sequential steps of an algorithm
State what is meant by Assignment A value is given a name (identifier) or the value associated with a given identifier is
changed.
State what is meant by Selection "Under certain conditions some steps are performed, otherwise different (or no)
steps are performed."
State what is meant by Repetition A sequence of steps is performed a number of times. This is known as iteration or
looping.
State what is meant by Input/Process/Output "Many problems we try to solve with a computer involve data which can be inputted,
processed, or outputted."
