AP CSP

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53 Terms

1

Expression

a combination of operators and values that evaluates to a single value

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2

Assignment Operator

allows a program to change the value represented by a variable

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3

Variable

a named reference to a value that can be used repeatedly throughout a program.

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4

String

an ordered sequence of characters.

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5

Boolean Value

a data type that is either true or false.

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6

Comparison Operators

<, >, <=, >=, ==, != indicate a Boolean expression

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7

Logical operator

NOT, AND, and OR, which evaluate to a Boolean value.

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8

Conditional Statement

affects the sequential flow of control by executing different statements based on the
value of a Boolean expression.

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9

Function

a named group of programming instructions. Also referred to as a "procedure".

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10

Function Call

a command that executes the code within a function

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11

User Interface

the inputs and outputs that allow a user to interact with a piece of software. User interfaces
can include a variety of forms such as buttons, menus, images, text, and graphics.

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12

Input

data that are sent to a computer for processing by a program. Can come in a variety of forms, such as
tactile interaction, audio, visuals, or text.

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13

Output

any data that are sent from a program to a device. Can come in a variety of forms, such as tactile
interaction, audio, visuals, or text.

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14

Program Statement

a command or instruction. Sometimes also referred to as a code statement.

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15

Program

a collection of program statements. Programs run (or "execute") one command at a time.

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16

Sequential Programming

program statements run in order, from top to bottom.

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17

Event Driven Programming

some program statements run when triggered by an event, like a mouse click or
a key press

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18

Documentation

a written description of how a command or piece of code works or was developed.

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19

Comment

form of program documentation written into the program to be read by people and which do not
affect how a program runs.

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20

Pair Programming

a collaborative programming style in which two programmers switch between the roles of
writing code and tracking or planning high level progress

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21

Debugging

Finding and fixing problems in an algorithm or program.

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22

Development process

the steps or phases used to create a piece of software. Typical phases include
investigating, designing, prototyping, and testing

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23

Event

associated with an action and supplies input data to a program. Can be generated when a key is
pressed, a mouse is clicked, a program is started, or by any other defined action that affects the flow of
execution.

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24

Computing Device

a machine that can run a program, including computers, tablets, servers, routers, and
smart sensors

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25

Computing System

a group of computing devices and programs working together for a common purpose

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26

Computing Network

a group of interconnected computing devices capable of sending or receiving data.

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27

Path

the series of connections between computing devices on a network starting with a sender and ending
with a receiver.

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28

Bandwidth

the maximum amount of data that can be sent in a fixed amount of time, usually measured in bits
per second.

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29

Protocol

An agreed-upon set of rules that specify the behavior of some system

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30

IP Address

The unique number assigned to each device on the Internet.

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31

Internet Protocol (IP)

a protocol for sending data across the Internet that assigns unique numbers (IP
addresses) to each connected device

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32

Router

A type of computer that forwards data across a network

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33

Packet

A chunk of data sent over a network. Larger messages are divided into packets that may arrive at the
destination in order, out-of-order, or not at all.

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34

Redundancy

the inclusion of extra components so that a system can continue to work even if individual
components fail, for example by having more than one path between any two connected devices in a network.

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35

Fault Tolerant

Can continue to function even in the event of individual component failures. This is important
because elements of complex systems like a computer network fail at unexpected times, often in groups.

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36

HTTP

HyperText Transfer Protocol - the protocol used for transmitting web pages over the Internet

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37

Domain Name System (DNS)

the system responsible for translating domain names like example.com into IP
addresses

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38

Internet

a computer network consisting of interconnected networks that use standardized, open
(nonproprietary) communication protocols.

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39

World Wide Web

a system of linked pages, programs, and files.

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40

Digital Divide

differing access to computing devices and the Internet, based on socioeconomic, geographic,
or demographic characteristics

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41

Binary

A way of representing information using only two options.

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42

Decimal

A way of representing information using ten options.

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43

Bit

A contraction of "Binary Digit"; the single unit of information in a computer, typically represented as a 0 or
1

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44

Byte

8 bits

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45

Overflow Error

Error from attempting to represent a number that is too large.

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46

Round-off Error

Error from attempting to represent a number that is too precise. The value is rounded.

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47

Analog Data

Data with values that change continuously, or smoothly, over time. Some examples of analog
data include music, colors of a painting, or position of a sprinter during a race.

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48

Digital Data

Data that changes discretely through a finite set of possible values

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49

Sampling

A process for creating a digital representation of analog data by measuring the analog data at
regular intervals called samples.

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50

Lossless Compression

A process for reducing the number of bits needed to represent something without
losing any information. This process is reversible.

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51

Lossy Compression

A process for reducing the number of bits needed to represent something in which
some information is lost or thrown away. This process is not reversible.

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52

Intellectual Property

A work or invention that is the result of creativity, such as a piece of writing or a design,
to which one has rights and for which one may apply for a patent, copyright, trademark, etc.

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53

Creative Commons

A collection of public copyright licenses that enable the free distribution of an otherwise
copyrighted work, used when an author wants to give people the right to share, use, and build upon a work that
they have created

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