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Digital Electronics and Logic Gates
Quick questions on Binary and logic levels explained: O-Level Electronics Digital Electronics
2short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What are the two logic levels?Show answer
A digital signal is allowed only two voltage levels:
What are binary numbers?Show answer
Binary is the base-two number system, using only the digits 0 and 1, which matches the two logic levels exactly. Each binary digit (bit) has a place value that is a power of two. For a four-bit number the place values, from left to right, are:
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