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- Morse code (33777 bytes)
1: ...b|right|Portrait of Samuel F. B. Morse.Image provided by [http://classroomclipart.com Classroom Clip A...
2: ...orse code is the only digital [[modulation]] mode designed to be easily read by humans without a compu...
4: ...rly form of a digital code. International Morse code is composed of six elements:
11: ...by more regular formats, including the [[Baudot code]] and [[ASCII]].
13: ...s, became known as Railroad or [[American Morse code]], and is now very rarely used. - Computer hardware (4023 bytes)
1: ...ns or operates on, and the [[software]] that provides instructions for the hardware to accomplish task...
4: ...omputer ([[personal computer]], PC) consists of a desktop or tower case ([[chassis]]) and the followin...
14: ...e controllers, of [[Integrated Drive Electronics|IDE]], [[SCSI]] or other type, that control [[hard di...
15: * [[graphics card|video display controller]] that produces the output fo...
16: ...o connect the computer to external [[peripheral]] devices such as [[computer printer|printer]]s or [[i... - Computer mouse (29399 bytes)
1: ...movement.<br>'''3:''' Optical encoding disks include light holes.<br>'''4:''' Infrared LEDs shine thro...
3: ... The underside of the mouse houses a device that detects the mouse's motion relative to the flat surf...
5: ... because the cord on early models resembled the rodent's tail, and also because the motion of the poin...
9: [[Image:firstmouseunderside.jpg|frame|The first computer mouse held by invent...
11: ....com/3543541.html 3541541]. Ball and wheel by ''Rider'', 9/74, [http://www.freepatentsonline.com/38354... - Wheelchair (2999 bytes)
5: A '''wheelchair''' is a device used for mobility by people for whom [[walkin...
8: ...er). Also known as ''self- propelling. Many are designed so that they can also be pushed by another ...
12: ...th several options including seat size (width and depth), seat to floor height, footrests/legrests, an...
14: ...ls, or by actuating [[motor]]s, usually with a [[joystick]].
16: Experiments have also been made with unusual variant wheels, like the [[omniwheel... - Scooter (7008 bytes)
2: [[Image:honda_nh80.jpg|250px|thumb|A modern scooter]]
3: [[Image:A modern scooter.jpg|thumb|Another scooter]]
8: ...maller than engines on other motorcycles. Most modern motor scooters come with [[two-stroke_cycle]] e...
10: ...e UK from the 1960s, [[Mods]] and [[Skinheads]] rode customised Vespas and Lambrettas, adorned with ma...
14: ... both a classic/retro model and a sporty/modern model.
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