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chapter 2 computers


byte a group of 8 bits
bit the smallest unit of data a digital computer can recongnize; represented by a 0 or a 1
petabyte (PB) approximately 1,000 terabytes
stylus an input device that is used to write electronically on the display screen
RFID reader a device used to read RFID tags
barcode a machine-readable code that represents data as a set of bars
digital camera an input device that takes pictures and records them as digital images
monitor a display device for a desktop computer
printer an output device that produces output on paper
speakers output devices that provide audio output