MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -In binary logic the two levels are logical high and logical low, which generally correspond to binary numbers 1 and 0 respectively or truth values true and false respectively. Signals with one of these two levels can be used in boolean algebra for digital circuit design or analysis.

Detailed explanation-2: -"Logic 0” and “logic 1” represent binary digits (0 and 1) or Boolean logic conditions (true and false). Thinking in terms of logic 0 and logic 1 allow engineers to design circuits and logic gates at a high level of abstraction that is removed from implementation considerations.

Detailed explanation-3: -Logic 0 or Logic 1 A binary 1 is also referred to as a HIGH signal and a binary 0 is referred to as a LOW signal. The strength of a signal is typically described by its voltage level.

Detailed explanation-4: -This means the output is active low. That just means that when the output is active it has a logic low value, rather than a logic high. So, when the corresponding value is present on the inputs (1001 for example) the corresponding output (9) will be low and the rest will be high.

Detailed explanation-5: -Ground is 0 V not because we define it like so, but because we measure its voltage with respect to itself. Ground is the point we choose to measure all voltages in the circuit with reference to.