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a group of 8 bits
a quantity expressed as the number of pixels per row by the number of pixels per column
contains mostly unprintable characters
data that varies in a continuous manner
Nyquist's Theorum
the smallest addressable area in an image
a number system that uses 0 and 1
a system that does not involve computers
a text file with one record per line and the fields of each record separated by commas
a step or sequence of steps that are repeated until some condition is satisfied or while some condition is satisfied
shows the effect on the current state of an FSM of particular inputs and any corresponding output
a decision-making step
a whole composed of parts in orderly arrangement
the number of bits used to represent the colour of a single pixel in a bitmapped image
things that can be used to reach a goal and impose constraints
created when the pixels of an image are mapped to positions in memory that store binary codes representing the colour of each pixel
the value of the calling code's variable is copied to the routine's parameter
records geometric and other information about the objects that make up an image
a sequence of printable characters, organised line by line
a group of bytes
a careful step-by-step simulation on paper of how an algorithm would be executed by a computer
a number system that uses 0 to 9
a variable declared in a program block and accessible only within the program block
a routine that is called as part of an expression and returns a value
a location in memory that contains one or more data values
a table that shows the outcome for given logical condition
a number system that uses 0 to 9 and A to F
a sequence of zero or more characters
a variable declared at the beginning of a program and accessible from anywhere in the program
establishing the limits or rules about what can and cannot be done when solving a problem. these limits are a type of constraint
defines an ordered set of values such as integer, character, Boolean and enumerated types
a way of representing the sounds made by a musical instrument
a language that has English-like keywords and commands to express the basic constructs of sequence, selection and iteration
breaks a problem into smaller problems that are easier to work on
a collection of values of the same ordinal type with no associated order
the process of breaking a problem down through successive steps into smaller problems
an initial situation
consecutive steps or groups of steps processed one after another in the order that they arise
a component of a vector graphic such as a line, rectangle or circle
converts analogue signal into an equivalent digital signal
when a program does not compile because of syntax or lexical errors
returns only the whole number part of a division
a routine that may or may not return a value
a description, independent of any programming language, of a process that achieves some task. it is a step-by-step procedure for solving a problem
a system that is unlikely to malfunction
any letter, numeral or symbol in the given character set
a set of system objectives
something that shows the data entered and the result from the program
a number with a decimal point and a fractional part
a variable that's part of a record
updating a program to correct faults or improve features
the part of the routine that lists the parameters used to pass data into and out of the routine
when the program crashes or gets stuck in a loop
a system for representing negative numbers
converts digital signal into an equivalent analogue signal
an ordered set of values
a check made by a program to see that the data entered is reasonable
a branch of computing that studies the use of computers to perform computational processes normally associated with human intelkect
a whole number
a machine gthat consists of a fixed set of possible stated with a set of allowable inputs that change the state and a set of possible values
a value that does not change throughout the program
the difference between the original amplitude and its sampled value
a process for coding sampled anagloue signals by recording the height of each sample in a binary electrical equivalent
code that resembles a programming language but that uses less syntax to express an algorithm and is independent of any real programming language
use digital means to generate audio signals resembling instrument sounds or the human voice
an electrical signal with voltage changes that are abrupt or in discrete steps
the study of a complex process in order to improve its efficiency
can be one of two possible values
a given where it is not immediately how to reach the goal
a unique name given to a variable, procedure or function
data that takes the form of discrete values
a set of system objectives
the act or process of calculating or determining something by mathematical, logical or interactive methods
the study of natural and artificial information processes
a way of describing a FSM graphically. each state is represented by a circle and each transition by an arrow labelled with the input that causes the transition plus any output
a program that translates source code into executable object code
a description in a programming language of a process that achieves some useful result
a process that samples analogue signals at regular time intervals and produces electrical pulses of height proportional to the original signal's amplitude at the instant of samplin
a data structure that groups a number of variables
an electrical signal that varies in a continuous manner
a list of planned tests with their data or referring to a set of test data
placeholders for variables supplied at call time
a single binary digit
a very restricted subset of the English language
the quantity expressed as the number of dots/pixels per inch/cm
a desired outcome
a self-contained entity that results when a problem is divided into subproblems; each corresponding to a subproblem
measures what can and cannot be computed
returns True or False
the list of drawing commands that recreate a vector graphic
without guessing a solution before confirming it
used to challenge assumptions, establish facts and rules and define the boundaries of problem solving
the variable inside the routine uses a reference to the same memory location. the reference is the variable passed as a parameter
squeezes data into a smaller number of bytes than the data would occupy if uncompressed
an indented, numbered list of steps produced by stepwise refinement
when the programmer has made a mistake and the program output is incorrect
an operation that assigns a value to a variable
of a vector graphic object, describes things such as the size, direction, thickness, shading, font size and typeface

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