( 20 )
1 •
2 •
3 •
4 (TCP/IP )
5
6
7
8
9
10 World Wide Web
11 Web API
12
13 git GitHub
14
(6/24 ) / (2 ) OK
/
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←
←
TCP/IP ←
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1
: ( )
(65 (0x41)) (97 (0x61))
ASCII (American Standard Code for Information Interchange)
32 (0x20)
2
: CD ( ) ← CD
44.1kHz 16bit
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→
USB
USB (Universal Serial Bus)
(bus)
→
→
→
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photo by nikoretro
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Communication
1. The exchange of thoughts, messages, or information, as by speech,
signals, writing, or behavior
2. Interpersonal rapport
— “The American Heritage Dictionary”
. . .
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Photo by SLU Madrid Campus
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Protocol
1. the official procedure or system of rules governing affairs of state or
diplomatic occasions
2. the original draft of a diplomatic document, especially of the terms of a
treaty agreed to in conference and signed by the parties
3. a formal or official record of scientific experimental observations
4. Computing a set of rules governing the exchange or transmission of
data between devices
— “Oxford Dictionary of English”
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OSI
OSI : Open Systems Interconnection
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