APCSP.CodeHS with JS.Mid-Way Review (Units 1-4) v2

JavaScript

A high-level programming language

Compiler

Special program that converts high level program into binary machine code

Machine code

Zeros and ones that represent simple instructions executed by a CPU

CPU (Central Processing Unit)

The key chip on the motherboard

Computer chip

Silicon chip containing the circuitry for a computer processor

Motivation to develop programs

Express creativity, satisfy curiosity, create new knowledge, satisfy common need

Uses of computer programs

Implement algorithms for: autopilots, defibrillators, facial recognition, creativity in other fields, computer art, colors on screen, medical diagnostics, gaming and more

Interactive media

Computer interaction that responds to your actions; for example by presenting text, graphics, animation, video, audio, or games

computer console

A computer program run using text-only interface

code (noun)

An organized list of laws and rules such as computer code, genetic code, honor code

Example of low-level programming language

100001010101001111

procedure synonym

function

bit

"binary digit"; single unit of information: 0 or 1.

Byte

8 bits

Binary Number System

The binary number system is base 2, using only bits 0 and 1.

Floating point notation

Computer method to encode decimal numbers with a coefficient, an exponent, and the number of significant figures. From −9.999999×10^96 through 9.999999×10^96. Some numbers must become approximations.

string

Variable data type made of "text" characters (starting with a letter, $, or _ in JavaScript).

MOD (modulus operator)

Evaluates the remainder when a is divided by b (positive integers). Symbolized by % in Javascript and MOD in APCSP exam.

++

Increment operator (add one)

--

Decrement operator (subtract one)

Integers

Variable data type whole numbers

Canvas

User interface acts as digital screen to manipulate pixels for image construction

Canvas coordinates

like reading a book, 0,0 starts top left, x goes to the right, y goes down (not like in math)

Boolean

A variable data type which can be set to either true or false.

CONSTANT

Defined above the start function in CAPITALS, a variable that does not change

Console

Text based user interface

Property

A characteristic used to describe a variable object, such as color in rect.setColor

Value

The property's assignment, such as red in (Color.red);