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Hardware Basics 601

Vocab. from Teaching Tech. ch. 2

RAM Random Access Memory
CPU central processing unit
ALU arithmetic logic unit
ROM Read Only Memory
binary coding system made of ones and zeros, units are called bits
megahertz one million cycles per second (processing speed)
gigahertz one billion cycles per second (processing speed)
OCR Optical Character Recognition software
CRT cathode ray tube (type of tv or computer monitor)
LCD liquid crystal display (type of tv or computer monitor
dpi dots per inch, a measure of resolution for printers
data projection unit fancy name for projector
document camera an Elmo!
AT (assistive technology) devices or software for special needs students
PAC Mate a computer system for designed for the blind or visually impaired
Created by: AndreaHope