3204 2010 7

3204 2010 7 Signal (Amplitude) (Frequency)

0 1 0 1 data code (American Standard Code for Information Interchange; ASCII) IBM IBM (American National Standards Institute; ANSI) 7 1 8 "0" "1"

(ASCII Code)(Extended Binary Coded Decimal Interchange Code; EBCDIC) 8 28 256

(EBCIDIC) (UNICODE) .. 2536 16 8 65,536 128 2,000

(UNICODE)

(Data transmission) (bit) 0 1 (byte) 8 1 (copper wire) (optical fiber) (laser) (radio) (infra red light)

(Noise)

2 (serial transmission)(parallel transmission)

1 (serial transmission)

0 1 (parallel transmission)

2 (asynchronous transmission) (synchronous transmission) 2 (asynchronous transmission) (synchronous transmission) (asynchronous transmission) Bit Pattern (asynchronous transmission) (synchronous transmission) ( ) (synchronous transmission)