Technology-Chapter 17

Question 1

Programming

Answer 1

is the act of formulating an algorithm or program, it entails developing a systemic means of solving a problem so that an agent can follow the instructions and produce the intended result for every input, every time.

Question 2

Adele Koss

Answer 2

one of the first professional programmers, summarized programing the Univac I in 1950.

Question 3

Java Script

Answer 3

a modern programming language that is especially effective for Web applications

Question 4

Names are seen as titles that having

Answer 4

changing values

Question 5

Names are called ,

Answer 5

variables, a term that reminds us that their values vary

Question 6

assignment

Answer 6

most commonly used programing language operation is the command to change the value of a variable, that command is this

Question 7

addresses

Answer 7

memory locations that have different values at different times

Question 8

identifier

Answer 8

the letter sequence that makes up a variable’s name, and can not contain any spaces, and are case sensitive

Question 9

declaring variables

Answer 9

first thing you do when writing any program is to state what variables will be used, and we do it using a command called declaration

Question 10

statement terminator in Java Script is

Answer 10

a semicolon

Question 11

every variable used in a program must ..

Answer 11

be declared

Question 12

undefined

Answer 12

when the names is declared but there is no value assigned yet

Question 13

initialize

Answer 13

when javascript allows us to set the initial value as part of the declaration, it does this to the variable

Question 14

three types of data in java script programs

Answer 14

numbers, strings, and Booleans

Question 15

numbers

Answer 15

the values assigned to the variables

Question 16

strings

Answer 16

sequences of keyboard characters, can initialize a declaration

Question 17

rules for writing strings in JavaScript

Answer 17

• surrounded by quotes,
• the enter, backspace,tab, and \ key are not allowed inside a quote
• any number of characters are allowed
• double quoted can contain single quoted and vice versa
• apostrophe is the same as a single quote
• empty string-min. number of characters is zero

Question 18

literals

Answer 18

the numbers and strings

Question 19

Boolean Value (Booleans)

Answer 19

only two values, true or false

Question 20

data types or value types

Answer 20

different kinds of a programming language

Question 21

meta-brackets

Answer 21

to separate language that is being defined you use angle brackets called this

Question 22

assignment statement

Answer 22

changes a variable’s value , it is the workhorse of programing

Question 23

in the computer, an assignment statement causes the value in the memory locations corresponding to the variable to be

Answer 23

replaced by the new value resulting from the expression

Question 24

expression

Answer 24

describe the means of preforming the actual computation

Question 25

operators

Answer 25

expressions are built off of this, are the standard arithmetic operations

Question 26

the symbols used for basic arithmetic are

Answer 26

arithmetic operators

Question 27

Binary operators

Answer 27

operate on two values called operands, and unary operators

Question 28

modulus (mod) operation

Answer 28

divides two integers and returns the remainder

Question 29

relational operators

Answer 29

are used to make comparisons between numerical values

Question 30

operator overload

Answer 30

the use of an operator with different data types

Question 31

concatenation

Answer 31

when we use + with strings , it joins the stings by the operation of this

Question 32

conditional statement

Answer 32

to test numbers and strings easier

Question 33

compound statement

Answer 33

when we group the statements by surrounding them in curly brackets which then collects them to become a single statement