Appendix A. Glossary
2’s complement
An internal method that computers use to represent negative values.
absolute value
The positive representation of a positive number, zero, or a negative number.
abstraction
The name given to an object’s details that are hidden from the view or use of other parts of the program that use the object.
accumulator
A variable that is updated as a program executes.
ActiveX
Prewritten objects that work as controls that you can embed in a web page.
AJAX
Asynchronous JavaScript and XML. JavaScript’s capability to communicate with a web server without submitting a form or loading a page.
algorithm
A common procedure or step-by-step methodology for performing a specific task and producing desired results.
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