logic gates

Question 1

What does digital mean

Answer 1

Digital signals are a series of pulses consisting of two states: ON (1) or OFF (0). There are no values in between. DAB (Digital Audio Broadcast) radio is transmitted as digital signals.

Question 2

what does analogue mean

Answer 2

Music and speech vary continuously in frequency and amplitude. In the same way, analogue signals can vary in frequency, amplitude, or both. FM (Frequency Modulated) and AM (Amplitude Modulated) are two types of radio signals

Question 3

For an AND gate, how many of the inputs have to be 1 for the output to be 1?

Answer 3

For the output of an AND gate to be 1, both inputs need to be 1

Question 4

Describe AND logic gates

Answer 4

output is at logic 1 when, and only when all its inputs are at logic 1, otherwise the output is at logic 0

Question 5

Describe OR logic gates

Answer 5

Output is at logic 1 when one or more at logic 1. If all inputs are at logic 0, output is at logic 0

Question 6

Describe NAND logic gates

Answer 6

output is at logic 0 when, and only when all its inputs are at logic 1, otherwise the output is at logic 1

Question 7

Describe NOR logic gates

Answer 7

Output is at logic 0 when one or more of its inputs are at logic 1. If all the inputs are at logic 0, the output is at logic 1

Question 8

describe NOT logic gates

Answer 8

Output is at logic 0 when its only input is at logic 1, and at logic 1 when its only input is at logic 0. That’s why it is called an INVERteR