1.1 Key Terms Flashcards
Abstraction
Procedural abstraction gives a name to a procedure. People can then use the procedure without worrying about the finer grain details.
Adaptive Technology
Adaptive technology helps increases or maintains the capabilities of a person with a disability
Analog
Analog information has continuous values instead of jumping from one value to another value without passing through the values in between. Most physical information such as position, wind speed, light intensity, or sound pressure, is analog.
Arguments
The values that a program provides to a function.
Authentication
When two parties exchange information so that they trust that each other is who they say they are
Automation
Automation is using a system (often a computer) to do something with less human attention than the task would otherwise require. Examples: automated manufacturing of clothing, security image analysis, or automated vegetable planting.
Backlog
A prioritized list of features or user stories to add to a program
Binary
Binary information is written using only two values: zero and one. Everything can be approximately represented using a binary representation.
Boolean Expression
A Boolean expression is either True or False. Boolean operators include “and,” “or,” and “not.”
Character
Any single typeset unit, including uppercase and lowercase letters, digits, punctuation marks, international characters like letters with accent marks and special characters like tabs and carriage returns
Collaboration
Working together by sharing information, resources, or responsibilities; creating knowledge, services, or goods as a group
Components
Parts of an interface
Concatenate
To tack together two strings of characters, making one longer string
Computational Thinking
Habits that help people solve problems with computers. Computational thinking habits cause a person who is facing a problem to ask how computers could help them be more creative, to communicate, to collaborate, to use data or the Internet, or to use crowdsourcing or simulation, to solve a problem.
Creative Expression
Computing helps people create sound, movies, 2D media such as screen images or paper art, 3D media including computer-controlled subtractive art (milling) or additive art (3D printing), user interface design, user experience design.
Decomposition
A problem solving strategy of breaking a problem apart into smaller subproblems
Default
A default value is a value that a variable will have if no action is taken by the user
Digital
Digital information has discrete values with gaps between the values. Digital information can be exactly represented using a binary representation. Digital information can be duplicated exactly, without loss in quality. Digital information can be transmitted error-free.
Digital Divide
The contrast between two groups’ access to computing resources and the Internet on the basis of race, wealth, or national boundaries
Economic Impact
Economic impacts of computing include changes in the numbers types, and wages of jobs, and changes in the amount, type, and cost of services, goods, and materials produced.
Evaluate
To determine the result of an expression
Event
An action that can trigger an event handler to be executed, such as user input from the mouse or keyboard, or a timer’s alarm
Event Handler
A part of a program that runs when an event occurs
Global Variable
A variable that can be used anywhere in a program, unlike a local variable, which can only be used in one portion of a program. In App Inventor, procedures, event handlers, and for loops can create a local variable that can only be used inside that procedure, event handler, or for loop.
