a digital value of 0x8f represents what analog voltage if the range is 1 to 5 volts. the adc is 8bits?

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a digital value of 0x8f represents what analog voltage if the range is 1 to 5 volts. the adc is 8bits?

2007-12-13 03:38:54 · 1 answers · asked by Anonymous in Science & Mathematics ➔ Engineering

1 answers

0x8F is 143 decimal.

143/255 is the ratio of full scale, which is 0.56078.

0.56078 * 4 volts (full scale) = 2.243 volts
Add 1 volt to that (the low end of the scale starts at 1v), and you end up with 3.243 volts.

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2007-12-13 04:08:46 · answer #1 · answered by tlbs101 7 · 0⤊ 0⤋