The document discusses Android's Sensor Manager and how it works with sensors. It covers the SensorManager class, which allows apps to access sensor data, and the SensorEventListener interface that apps must implement to receive sensor updates. It also lists some of the different types of sensors available on Android devices like accelerometers, gyroscopes, and light sensors.
This document discusses BroadcastReceivers in Android. A BroadcastReceiver is an intent-based publish-subscribe system that allows apps to receive system events like SMS messages. BroadcastReceivers can receive and react to system broadcasts, broadcasts from other apps, and initiate broadcasts to other apps. They are registered either dynamically in code or statically in the AndroidManifest.xml file. Broadcasts are sent using the sendBroadcast or sendOrderedBroadcast methods and an Intent. Ordered broadcasts are executed in a defined order while normal broadcasts run asynchronously. The BroadcastReceiver object is only valid during the onReceive method call.
The document discusses Android's Sensor Manager and how it works with sensors. It covers the SensorManager class, which allows apps to access sensor data, and the SensorEventListener interface that apps must implement to receive sensor updates. It also lists some of the different types of sensors available on Android devices like accelerometers, gyroscopes, and light sensors.
This document discusses BroadcastReceivers in Android. A BroadcastReceiver is an intent-based publish-subscribe system that allows apps to receive system events like SMS messages. BroadcastReceivers can receive and react to system broadcasts, broadcasts from other apps, and initiate broadcasts to other apps. They are registered either dynamically in code or statically in the AndroidManifest.xml file. Broadcasts are sent using the sendBroadcast or sendOrderedBroadcast methods and an Intent. Ordered broadcasts are executed in a defined order while normal broadcasts run asynchronously. The BroadcastReceiver object is only valid during the onReceive method call.
1. The document discusses the Android application lifecycle and how activities can transition between different states like onCreate, onStart, onResume, onPause, onStop, and onDestroy.
2. It also covers the activity lifecycle methods and how they relate to different states, as well as how to save and restore activity instance states.
3. Additionally, it provides comparisons between the Android and Windows lifecycles and messaging systems, and introduces concepts like handlers, loopers, threads, and the context class in Android.
This document provides an overview of cloud computing fundamentals. It defines cloud computing as on-demand access to configurable computing resources over the internet. The document discusses key cloud concepts like deployment models (private, public, hybrid, community clouds), service models (IaaS, PaaS, SaaS), and requirements for cloud services. Popular cloud providers like AWS, Azure, Google Cloud are presented for each service model. Benefits of cloud computing are also highlighted such as reduced costs, flexibility, and global access to resources.
This document summarizes the analysis of bias for a BJT (bipolar junction transistor) circuit. It includes:
1. An overview of different BJT amplifier configurations - common emitter (CE), common base (CB), and common collector (CC).
2. A description of the bias point as the quiescent operating point in the active mode.
3. An analysis of the bias for a CE amplifier using a Thevenin equivalent circuit and equations for the base-emitter loop and collector-emitter loop to solve for collector current and CE voltage.
4. Guidelines for selecting resistor values in the bias network, including RB being greater than 10k立, RE being
This document discusses the different cloud service models of Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). IaaS provides basic computing resources like servers and storage. PaaS provides development tools and platforms for building applications. SaaS provides complete software solutions that are accessed via the internet. Popular providers for each service model are also mentioned.
1. The document discusses different cloud deployment models including private, public, community, and hybrid clouds.
2. Private clouds can be either on-premise or outsourced to a third party, and provide a high level of security but have constraints around budget and SLAs.
3. Public clouds are highly scalable and affordable but have challenges around security, data privacy, and organizational autonomy.
This document discusses cloud computing architecture and concepts. It covers the different layers of a cloud architecture including the user/client layer, network layer, cloud management layer, hardware resource layer, and components including applications, platforms, infrastructure, virtualization, and physical hardware. It also discusses public cloud access and networking, the drawbacks of traditional web applications compared to cloud applications, and key features of cloud computing such as elasticity.
This document discusses cloud computing fundamentals. It defines cloud computing as a model for enabling ubiquitous, on-demand access to a shared pool of configurable computing resources over the internet. The document outlines key cloud service providers like AWS, Azure, and Google Cloud. It also discusses deployment models including private, public, hybrid and community clouds. The document lists requirements for cloud like security, portability, and flexibility. Finally, it notes benefits of cloud like reduced costs, accessibility, and improved flexibility.
![2018 る碁覦伎れロ旧 蠍磯 螻(100)
Smart Device M2M
Date: 2018-06-08
1. Bluetooth螳 Arduino Smartphone 旧 レ 4螳讌 伎 . (20)
- Smartphone Bluetooth HW SW螳 企 蟲豢 螳覦 Arduino
Bluetooth襷 螻ろ覃
- Bluetooth BLE(Bluetooth Low Energy)襯 讌覩襦 伎 螳ロ
- Bluetooth Master-Slave 蟲譟磯ゼ 讌覩襦 Arduino 覿谿 Bluetooth 譴
Slave mode襦 所
- Bluetooth れ profile 螻牛覩襦 SPP(Serial Port Profile)襯 伎覃 Arduino
serial port襦 所 郁屋
2. れ Arduino Code襯 . (30)
1) SoftwareSerial(SWS)襦覿 start襯 ル朱 sensor 覲企ゼ SWS
- SWS Rx 10覯, Tx 11覯 郁屋, 郁屋 9600 bps
- SWS 覓語 ル StringTok.inputSerial(SoftwareSerial & sws)
- Sensor analog #0覯 郁屋, format: getsen [sensor 覲]
#include <SoftwareSerial.h>
#include <StringTok.h>
#define SERIAL_BPS (9600)
#define DELAY_MS (1000)
SoftwareSerial mySerial(10, 11);
void setup() {
mySerial.begin(SERIAL_BPS);
}
void loop() {](https://image.slidesharecdn.com/testsdic2018-2answer-180615022740/85/Test-SDIC2018-2-answer-1-320.jpg)
