The types of data exchanged between a computer and peripheral are summarized below.
●Analog
“Analog” information is expressed as a continuous value. Changes occur
in a wave-like pattern since time is continuous. Attenuation and noise become more pronounced as the transmission distance increases.
Size
Time
Computer system
Size
Chapter 8
●Digital
“Digital” information is expressed as a concrete numerical value. Changes
occur in a bar graph pattern due to numerical value conversion. Digital information is not prone to attenuation and noise as the transmission distance
increases.
Time
A computer processes information based on electrical signals that have
been converted into numerical values. In other words, a computer handles
and processes digital information. In the exchange of electrical signals between a computer and peripheral, the interface acts as an intermediary. Input/output interfaces used for data transmission are divided into “serial interfaces”, “parallel interfaces”, and “wireless interfaces.”
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