Thursday, August 6, 2009

chapter 5

this chapter is about input and output..input is data or instructions entered into the memory of computer..input device is any hardware component used to enter data or instructions into a computer..the device is such as keyboard, mouse, trackball, touch pad, control pad, game pad, light pen, touch scree, stylus and many more. beside that, there are also have other input device such as voice input, audio input, digital camera, web cam, scanner, turnaround document, optical reader, and others..

then, output is data that has been processed into a useful form, called information. example of output device are monitor, printer, audio output device such as speakers, earphones, and earbuds, voice output such as internet telephony, fax machine, data projector and many more.

at the end of lesson, i get information about input and output so much. now i can differentiate between what is output device and input device..

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