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Date Posted: 17:15:10 07/31/02 Wed
Author: Li
Subject: Technology - unfinished, will complete tonight

System Technology Options

Activity – technology – implications

Playing songs from a MP3 player is like using a…

MP3 decoder in software - software-based MP3 player
MP3 decoder in small-sized hardware – hardware MP3 player, the size can be very small
Audio playback hardware – user must enter play, stop and pause instructions
Plastic/metal push buttons connected with microchips – use buttons as user input
LCD display – visual information about the songs
Mini FM tuner – receives and plays radio

Providing power to a MP3 player is like using a …

AA batteries – enough space to hold at least 2 1.5-volt batteries in the player, 4 hours continuous playing
Lithium battery –10 hours playing capability, must provide built-in battery and cord/adapter for recharging
AC adapter – socket for AC power on the player
Car adapter – socket for AC power compatible with standard car adapters

To store music on a MP3 player is like using…

CD RW – player must read MP3 files from the CD-ROM, size large enough to hold a CD
Memory card – slot for memory cards
Mini hard drive -

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