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-2V

a. b. +2V. -2V. 8 bit. ADC. a. Tetik. 8. ADC (Analog to Digital Conversion):. a: Analog, b: Dijital. 0. +2V. a=-0.45 ise b=156.1875 →b=156. -2V. 255=2 8 -1. 8 bitlik hasssasiyet. 156-128=28. 28-16=12. 128 64 32 16 8 4 2 1. 12-8=4. 1. 0. 0. 1.

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-2V

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  1. a b +2V -2V 8 bit ADC a Tetik 8. ADC (Analog to Digital Conversion): a: Analog, b: Dijital 0 +2V a=-0.45 ise b=156.1875→b=156 -2V 255=28-1 8 bitlik hasssasiyet 156-128=28 28-16=12 128 64 32 16 8 4 2 1 12-8=4 1 0 0 1 1 1 0 0 4-4=0 8. 7. 6. 5. 4. 3. 2. 1. bit ASCII: American Standard Code for Information Exchange 156 £ Alt tuşu ve 156 1 byte=8 bit Örnekleme Frekansı: fs

  2. ASCII Kod Tablosu

  3. 0 +5V a b -5V 4095=212-1 Hassasiyet: 12 bitlik ADC ile kaydedilen ölçüm bilgisi: 13x256 + 106 Referans gerilimleri sırası ile 5 V (tüm bitler 0) ve –5 V (tüm bitler 1) Ölçüm bilgisinden ölçülen gerilim değeri=? 13 x 256 + 106 = 3434 a=-3.4 V 32 bitlik bir ADC de kaydedilen 4 karakter %cA= ise b = (37) 2563 + (99) 2562 + (65) 2561 + (61) 2560 = 627261757 1 V aralık için hassasiyet: 1/(2^32-1)/2 = 1.16e-10 32 bitlik bir ADC de b = 367896332 ise kaydedilen 4 ASCII karakteri: 367896332 / 2563 = 21.9283, b1 = 367896332 – (21) 2563 = 15574796 15574796 / 2562 = 237.6525, b2 = 15574796 – (237) 2562 = 42764 42764 / 2561 = 167.0469, b3 = 42764 – (167) 2561 = 12 Yanıt: 021, 237, 167, 012 nolu karakterler

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