AQA A Level Computer Science Full Course Study Bundle Updated 2024!

Hardware - Answer A generic term for the physical parts of the computer, both internal and external. AND gate - Answer Output will only be ON if BOTH inputs are ON NOT gate - Answer Inverts the input e.g. Output OFF if the input is ON System Software - Answer A range of programs tha...

Define algorithm - Answer An algorithm is a sequence of steps that can be followed to complete a task. Define decomposition - Answer Decomposition means breaking a problem into a number of sub-problems, so that each subproblem accomplishes an identifiable task, which might itself be furth...

Data - Answer A general term for facts and figures. Before items of data are input into a computer system, they have not been processed or organised. Information - Answer Data that has been processed or organised by the computer. It is the output from a computer system. Data processing - A...

recursive subroutine [1] - Answer a subroutine that calls itself base case [1] - Answer the circumstances when a recursive subroutine does not call itself components of a stack frame [4] - Answer local variables; return address; parameters; register values; static data structure [3...

Abstract data type (ADT) - Answer A data type whose properties are specified independently of any particular programming language. Abstraction - Answer Representation that is arrived at by removing unnecessary details. Algorithm - Answer A sequence of unambiguous instructions for solving...

What is an integer? - Answer A positive or negative whole number What is a Real or Float number? - Answer A positive or negative number that can have a fractional part. What is a Boolean? - Answer True or False What is a character? - Answer A single letter, number or symbol What ...

What is a bus? - Answer A set of parallel wires connecting two or more components of a computer What are the three computer buses and what do they do? - Answer - Address Bus carries addresses sent by the processor to access particular memory locations - Data Bus carries data from memory - ...

Arithmetic Logic Unit (ALU) - Answer The part of the central processing unit that performs arithmetic computations and logical operations Control Unit - Answer Coordinates activities in the CPU, memory and peripherals Clock - Answer A continuous sequence of clock pulses to step the contr...

Absolute Error - Answer The difference between the actual number and the nearest representable value. Abstract data type (ADT) - Answer A data type whose properties are specified independently of any particular programming language. Abstraction - Answer Representation that is arrived at ...

Natural number - Answer A positive whole number including zero. Integer - Answer Any whole positive or negative number including zero. Rational number - Answer Any number that can be expressed as a fraction or ratio of integers. Irrational number - Answer A number that cannot be rep...

Baud Rate - Answer The maximum possible number of signal changes that can occur in a wire per second. Bit Rate - Answer The number of bits that can be sent down a wire per second. Integer - Answer A whole number that can be positive, negative or zero. Examples: -3, 0, 7, 2013588. N...

Analysis - Answer Gather information from users about what happens now and what the new system is required to do Design - Answer How will the new system meet its requirements? Input, Output, Processing and Storage designed Implementation - Answer Building the new system. In order to be r...

computer - Answer machine that processes data computer system - Answer consists of hardware and software that work together to process data / complete tasks. hardware - Answer physical components of a computer e.g. (cpu, motherboard, monitor) software - Answer programs that a comput...

What is hardware? - Answer The electrical or electro-mechanical parts of a computer What is software? - Answer Software comprises all of the programs that are written to make computers function. What is system software? - Answer System software is the software needed to run the computer...