Question

What is the function of 8-bit converter?

(a) It divides the signal into 64 steps

(b) It divides the signal into 256 steps

(c) It divides the signal into 1024 steps

(d) It divides the signal into 128 steps

This question was addressed to me in homework.

Query is from Instrumentation and Control in chapter Instrumentation and Control of Fermentation Technology

Answer 1

The correct option is (b) It divides the signal into 256 steps

For explanation: The 8-bit converter works in the range of 0 to 255. It is, therefore, able to divide the signal into 256 steps. This gives maximum accuracy of 100/256, which is approx 0.4 %.