APCSP Unit 2 Study Guide

 APCSP

Unit 2 Study Guide

What type of input does the I have a Dream app expect

tactile

What type of output does the I have a Dream app generate

audible

List seven components in the User Interface drawer

Button, Image, Label, Date picker, List picker, List view Notifier

List five components found in the Layout drawer

Vertical scroll arrangement, Vertical arrangement, Table arrangement, Horizontal Scroll Arrangement, Horizontal arrangement

What event handlers could you use with a player component? What do these components do

Call_player.stop, call_player.start, call_player.pause, and call_player.vibrate. These cause the player to stop, start, pause and vibrate.

When you add components to the screen they are set with default values of what

properties

What programming style does App Inventor use

Event driven programming

What tool is used to test your code without using a real phone or tablet

emulator

How do you add components in the Design view

You drag and drop them from the palette on the left and side of the screen

Where can you find a conditional block in App inventor

Under the control section

What are the parts of a conditional statement? What do they do

If then and else. Allows the user to choose between different actions

What are some examples of good names for a button

Dogbutton mlkbutton etc.

What is hardware? Give four examples

The electronic and mechanical components that carry out the instructions of a computer program. Motherboard RAM CPU monitor/screen

What is software

The program(s) that control a computer

What is a CPU

A Central Processing Unit which is the part of the computer's hardware that interprets and runs the computer program.

What do you call someone who writes programs

programmer

What is the difference between low-level and high-level programming languages

Low level programming languages are understandable to a computer. High level programming languages are understandable to humans.

Give an example of an event on your phone

Me clicking on an app

How long is a millisecond

1/1000th of a second

Define abstraction

An abstraction is the simplification of a complicated concept or object

List the following hardware components from the lowest to highest level of abstraction. RAM chip motherboard physical circuit logic gate integrated circuit

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

What is an AND gate? OR gate

An AND gate's output is only true when both of its inputs are true. An OR gate's output is only true when one or both of its inputs are true.

What is behavior

How your program responds to various events

What is a general purpose computer

A general purpose computer is a computer that can run many different programs

What is pseudocode

A mix of english and programming languages that is easy to read and understand

What is a computer’s main memory

RAM. stores data that disappears when the computer loses power. Stores instructions read by the CPU

Define a program

A sequence of instructions

What is machine language

A programing language that can be read by a computer's CPU without translation

What is a motherboard

Houses the computer's main electronic components

What is a chip

An Integrated Circuit made up of millions of tiny circuits

What is a character

A symbol that uses one byte of storage

What is data

Distinct information that is formatted in a specific way

What is a bit

A binary digit

What is intellectual property

Created using original thought

What is a network

A group of two or more computer systems linked together

What is a disk drive

A randomly addressable and re-writable storage device.

What is a data center

houses computers servers, networking systems, and components for a company’s IT needs.

What is a data network

A telecommunications network which allows computers to exchange data.

What is Moore’s Law

Growth density of integrated circuits.The number of transistors in an integrated circuit will double each year.

How is Computer Science more than just “programming"

it is Programming, designing, problem-solving, creativity

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

so that when you are coding you will know what the variable stands for and what the component means.