GCSE COMPUTER SCIENCE PAST PAPERS SET
OF 5 EXAM-STYLE QUESTIONS AND MODEL
ANSWERS
◉ analogue signal. Answer: a continuous signal which can't be
processed by a computer
◉ argument. Answer: a value that a parameter of a subprogram
actually takes
◉ ALU. Answer: part of CPU that carries out arithmetic and Boolean
operations
◉ array. Answer: data structure where all data is stored and defined
under one variable name
◉ ASCII. Answer: A 7-bit character set consisting of 128 characters
◉ assembler. Answer: a program that turns assembly language into
machine code
◉ assembly language. Answer: low-level langauge
,◉ authentication. Answer: a process for checking user identity
◉ binary. Answer: a counting system using base-2 consisting of 0s
and 1s
◉ binary shift. Answer: moving the bits in a binary number left or
right and filling gaps with 0s
◉ BIOS. Answer: Basic Input Output System
◉ bitmap image. Answer: a graphic made up of pixels
◉ bit. Answer: a binary digit either 0 or 1
◉ bit rate. Answer: number of bits used per second of sampled audio
◉ breakpoint. Answer: a programming tool used to halt a program
at a specific place
◉ byte. Answer: 8 bits
, ◉ casting. Answer: a way of changing from one data type to another
◉ character. Answer: a single alphanumeric symbol
◉ code editor. Answer: part of an IDE where you write and edit your
source code
◉ colour depth. Answer: the number of bits used for each pixel in an
image file
◉ comment. Answer: a note added to source code to say what part
of a program does
◉ comparison operator. Answer: compares two values and outputs
either true or false
◉ compiled code. Answer: an executable file created by a compiler
◉ compiler. Answer: a programming tool to translate source code
into machine code
◉ compression. Answer: process of making the size of a file smaller
OF 5 EXAM-STYLE QUESTIONS AND MODEL
ANSWERS
◉ analogue signal. Answer: a continuous signal which can't be
processed by a computer
◉ argument. Answer: a value that a parameter of a subprogram
actually takes
◉ ALU. Answer: part of CPU that carries out arithmetic and Boolean
operations
◉ array. Answer: data structure where all data is stored and defined
under one variable name
◉ ASCII. Answer: A 7-bit character set consisting of 128 characters
◉ assembler. Answer: a program that turns assembly language into
machine code
◉ assembly language. Answer: low-level langauge
,◉ authentication. Answer: a process for checking user identity
◉ binary. Answer: a counting system using base-2 consisting of 0s
and 1s
◉ binary shift. Answer: moving the bits in a binary number left or
right and filling gaps with 0s
◉ BIOS. Answer: Basic Input Output System
◉ bitmap image. Answer: a graphic made up of pixels
◉ bit. Answer: a binary digit either 0 or 1
◉ bit rate. Answer: number of bits used per second of sampled audio
◉ breakpoint. Answer: a programming tool used to halt a program
at a specific place
◉ byte. Answer: 8 bits
, ◉ casting. Answer: a way of changing from one data type to another
◉ character. Answer: a single alphanumeric symbol
◉ code editor. Answer: part of an IDE where you write and edit your
source code
◉ colour depth. Answer: the number of bits used for each pixel in an
image file
◉ comment. Answer: a note added to source code to say what part
of a program does
◉ comparison operator. Answer: compares two values and outputs
either true or false
◉ compiled code. Answer: an executable file created by a compiler
◉ compiler. Answer: a programming tool to translate source code
into machine code
◉ compression. Answer: process of making the size of a file smaller
