1) to listen to music,we need a) a mouse b) speakrs c) a monitor d) a printer 2) these are used to enter data and give instructions to the computer  a) output devices b) processing device c) input devices 3) you can move things easily with the.... a) screen b) mouse c) microphone d) speakers 4) it's used to input sounds a) scanner b) keyboard c) microphone d) printer 5) the ......allows us to output the text and images on paper a) printer b) scanner c) speaker d) screen 6) the output of 20+30 will be a) 50 b) 20 c) 30

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