APCSP - Unit 2

Question 1

What type of input do physical apps expect? (I have a Dream)

Answer 1

Tactile

Question 2

What type of output do physical apps generate? (I Have a Dream)

Answer 2

Audible

Question 3

What is MIT App Inventor an example of?

Answer 3

A programming language
An Integrated Developement Environment (IDE)
A cloud application
A software system for developing mobile apps

Question 4

What elements would be considered part of the user interface for an app?

Answer 4

Color of the background screen
Button that appears on screen
Error message that appears after something goes wrong
Audible click that sounds when the user taps a button

Question 5

What palette drawer contains the “Player” component?

Answer 5

The Media drawer

Question 6

What is true about algorithms

Answer 6

Consist of a combination of sequences, repetitions, and or selections
Step-by-step procedures
Sequence of precise instructions

Question 7

Pseudocode is…

Answer 7

Easy to read
Not a programming language
Mix between natural and programming language

Question 8

Sequencing in algorithms means that each step of the algorithm is executed…

Answer 8

In the order that they are given

Question 9

Computing innovation includes a program as an integral part of its function. What would be considered a computing innovation.

Answer 9

Office software, a mobile app, self-driving cars

Question 10

Why are “IF” blocks used in the “I Have a Dream” app?

Answer 10

They are used to determine, when the buttons are clicked, whether a speech is already playing.

Question 11

What are examples of good names for a button?

Answer 11

ClearButton, MLKButton, ButtonClear, DogButton

Question 12

What is hardware?

Answer 12

A computer’s electronic and mechanical components. (ex: integrated circuits, motherboard, memory chips.)

Question 13

What is software

Answer 13

A program that controls a computer. (ex: iOS, Firefox browser, Excel)

Question 14

What is CPU

Answer 14

Central Processing Unit
It carries out, or processes, the instruction in a computer program.

Question 15

What is the difference between low-level and high-level programming langauges?

Answer 15

A high-level programming language must be run through software programs into low-level machine languages before they can be run on a computer.

Question 16

Give examples of events on your phone.

Answer 16

Clicking a button, shaking the phone, changing location

Question 17

How long is a millisecond?

Answer 17

1/1000 of a second.

Question 18

What is abstraction?

Answer 18

A general representation that stands for some collection of individual instances.

Question 19

Give an example of abstraction and other terms for it.

Answer 19

Ex: the word “dog.”
Condensing and Simplifying

Question 20

List these hardware components from lowest to highest abstraction: Logic gate, motherboard, integrated circuit, RAM chip, physical circuit.

Answer 20

Physical circuit, logic gate, integrated circuit, RAM chip, motherboard

Question 21

What is an AND gate?

Answer 21

A gate where the output is only true if both inputs are true.

Question 22

What is an OR gate?

Answer 22

A gate where the output it true of one or both of the inputs are true.

Question 23

What is a general purpose computer?

Answer 23

A device that can run many different programs. ex: tablet, smartphone, laptop, desktop

Question 24

What is a computer’s main memory?

Answer 24

Stores data, called RAM, disappears when the computer loses power, stores program instructions used by the CPU.

Question 25

Define a program

Answer 25

A sequence of instructions that controls the computer.

Question 26

What is machine language?

Answer 26

A type of programming language that is readable by the CPU.

Question 27

What is a motherboard

Answer 27

It is a piece of electronics that controls all of the computer's main electronic components.

Question 28

What is a chip?

Answer 28

An informal way of describing an integrated circuit consisting of millions of tiny circuits.

Question 29

What is a character?

Answer 29

Any type of symbol that requires one byte of storage.

Question 30

What is data?

Answer 30

Distinct information that is formatted in a special way. It exists in many forms like text on paper, or bytes in electronic memory.

Question 31

What is a bit?

Answer 31

Is a 1 or a 0 in binary code that determines how to tell the computer what the user wants to do.

Question 32

What is intellectual property?

Answer 32

Any property that is created using an original thought. (Patents, copyrights, and trademarks.)

Question 33

What is a network?

Answer 33

A group of two or more computer systems linked together.

Question 34

What is a disk drive?

Answer 34

A randomly addressable and rewritable storage device.

Question 35

What is a data center?

Answer 35

Virtual and physical infrastructure used by enterprises that house computer, server, and networking systems, and the components needed for the company's IT.

Question 36

What is a data network?

Answer 36

A telecommunications network which allows computers to exchange data.

Question 37

List a social media app. If you were the developer of this app, how would you reduce the harmful effects?

Answer 37

Snapchat. I would remove the ability to see other locations and I would not have the users input any unnecessary information. Not seeing locations would secure their privacy even more.

Question 38

How is Computer Science more than just programming?

Answer 38

Computer Science is programming, problem-solving, understanding, creativity, and designing. Much more than just programming.

Question 39

Why is it important to use “meaningful” names for your variables and components?

Answer 39

When you are coding your app, you will know what every variable controls, and when you get to more complex code, it would be extremely difficult to remember what “Variable1” and “Variable 34” mean.