CP102 Lecture Notes - Lecture 8: Digital Living Network Alliance, Short Message Service, Liquid-Crystal Display
Document Summary
Single unifying device: media, internet, entertainment, and telephony needs. Telephony use of equipment to provide voice communicaions over a distance. Cellular (cell) phones: mobile, cellular technology. Data is stored in separate internal memory chips. Addiional memory: micro sd lash card. Primary input devices: microphone, touch pad. Output devices: speaker, liquid crystal display (lcd, oled: newer display screen. Available sotware: google play, app store. Two main ways to transfer informaion: wired, wireless. Wired soluions: usb port, flash card. Short message service (sms: short text messages, up to 160 characters, convenient and quick, uses cell phone network. Connecion speed will depend on which technology you are using: 3g, 4g, lte. Calls can be placed anywhere you have internet access. Drawbacks: sound quality and reliability, loss of service at home if power is out, security risks. Enhanced 911 program: automaically gives precise locaion. Built and operated by the us department of defense.
