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IT293 Unit 2 Glossary of Terms
Terms for Unit 2- IT293
20
Computer Science
Undergraduate 2
08/21/2010

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Term
Binary Operators
Definition
Operators that require an operand on both sides of the operator.
Term
Condition
Definition
Expression involving relational and/or logical operators.
Term
ANSI Character Set
Definition
Numeric representation for every key on the keyboard and for other assorted characters.
Term
Relational Operators
Definition
Value of a relational expression will always be True or False. Expressions are evaluated from left to right with no order of operations.
Term
Logical Operators
Definition
Used with Boolean expressions.
Term
Boolean Expression
Definition
Expression that evaluates to either True or False is said to have Boolean data type.
Term
If Block
Definition
Block of code that causes the program to take a course of action based on whether a condition is true.
Term
ElseIf Clauses
Definition
Extension of the If block allows for more than two possible alternatives.
Term
Nested If Blocks
Definition
One If block contained inside another If block.
Term
Select Case Block
Definition
Efficient decision-making structure that simplifies choosing among several actions. It avoids complex nested If constructs.
Term
Selector
Definition
Determines the value of an expression Select Case choices.
Term
valueList
Definition
Itemizes the values of the selector for which the action should be taken.
Term
Block-level Scope
Definition
Variable declared inside an If … Then or Select Case block has block level scope and the variable cannot be referred to outside the block.
Term
Loop
Definition
Structures in programming used to repeat a sequence of statements a number of times.
Term
Do Loop
Definition
Repeats a sequence of statements either as long as or until a certain condition is true.
Term
Infinite Loops
Definition
Loops that never end.
Term
Counter
Definition
Numeric variable that keeps track of the number of items that have been processed.
Term
Accumulator
Definition
Numeric variable that totals numbers.
Term
Flag
Definition
Variable that keeps track of whether a certain situation has occurred.
Term
Nested Loop
Definition
Statements inside a loop that contain another loop.
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