graphical symbol original
51OS/2 — A typical OS/2 Warp 4 desktop Company / developer IBM Microsoft …
52Portable Document Format — PDF redirects here. For other uses, see PDF (disambiguation). Portable Document Format Adobe Reader icon Filename extension .pdf Internet media type application/pdf application/x pdf application/x bzpdf application/x gzpdf …
53Phase-shift keying — Passband modulation v · d · e Analog modulation AM · …
54Coulomb's law — Electromagnetism Electricity · …
55Apple IIc — Mac specs| 65C02 CPUspeed=1.023 MHz|OS=ProDOS|RAM=128 KB (up to 1.125 MB)|RAMtype=| Discontinued=August 1988The Apple IIc, the fourth model in the Apple II series of personal computers, was Apple Computer’s first endeavor to produce a portable… …
56Crazy Taxi (series) — Crazy Taxi The Crazy Taxi logo Genres Score attack, racing Developers Hitmaker …
57AOL — For other uses, see AOL (disambiguation). AOL Inc. Type Public company Traded as NYSE: AOL …
58Microsoft — Coordinates: 47°38′22.55″N 122°7′42.42″W / …
59Morse code — Chart of the Morse code letters and numerals Morse code is a method of transmitting textual information as a series of on off tones, lights, or clicks that can …
60Yoshi's Story — North American box art Developer(s) Nintendo EAD Publisher(s) …
