Discussion
What is the value of analogue output voltage Vo, for an N-bit straight binary digital to analogue converter, for the input 0010? The value of proportionality factor K is 1.
Answer: C
For an N bit straight binary digital to analogue converter the output voltage is the proportionality factor times the decimal value of the binary input.
\[ V_o = K \times (\text{decimal value of input}) \]
The binary input 0010 is 2 in decimal (the bit with weight \(2^1\) is set), and \(K = 1\), so
\[ V_o = 1 \times 2 = 2\ \text{V} \]
The value 1 would be for the input 0001, and 3 for 0011, and 0 for 0000. The answer is 2, option C.
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