Computer Science - Midterm fr this time

Two digits that are used in computers when representing information

1 and 0

The total amount of numbers represented with 8 bits

256

The smallest number that can be made using four bits

16

Abstraction

Creating simplified representations of something more complex. Hides complexity

TCP

Internet protocol that is more important when reassembling and requesting missing packets

IP Address

Unique to every person, which help to give information to the right person

Interviewing users, and observing them as they attempt to use the app

Two most important steps when it comes to app design and development

Sequential programming

Program statements run in order, from top to bottom

event-driven progamming

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

Quotations

Must be included to be read as a string

Comments - Helpfulness 1

Help debug issues within a code

Comments - Helpfuness 2

help document how code was written for other programmers

Comments - Helpfulness 3

enable programmers to track their work throughout the development process

1 var slice

2 var fuzz

3 slice = 12

4 fuzz = 25

5 = 300

6 = 500

7 console.log(fuzz)

500

1 var hey = 20;

2 hey = hey + 2;

3 hey = hey + 4;

4 hey = hey + 6;

5 console.log(hey)';

32

1 var hey = 20;

2 hey = hey + 2;

3 hey = hey + 4;

4 hey = hey + 6;

5 console.log(“hey”);

“hey”

Function benefits

Removes repeated lines

Function benefits 2

Help keep you organized

function benefits 3

Easier to update your code

Good time to use a function

When multiple lines of code are repeated

True && False

False

! True

False

False && True

False

False || False

False

True && True

True

False && False

False

! False

True

True || True

True

True || False

True

False || True

True

When using the &&, both must be __ for the boolean expression to evaluate as true

True

When using the ||, either must be __ for the boolean expression to evaluate as true

True

When using __, The results are the opposite of the Boolean value

!

.

Equality Operator

.

Inequality Operator

.

Greater than operator

.

Greater than or equal operator

.

Less than Operator

.

Less than or equal operator

.

OR Boolean Operator

.

AND Boolean Operator

.

NOT Boolean Operator

When would you use this?

Used to assign a value to an already existing variable

When should this be used?

Used to declare a variable

Expression

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

Assignment Operator

allows a program to change the value represented by a variable

Variable

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

String

An ordered sequence of characters

Boolean Value

A data type that is either true or false

Comparison Operators

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

Logical operator

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

Conditional Statement

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

Function

A named group of programming instructions. Also referred to as a “procedure.”

Function Call

A command that executes the code within a function