Section 8 - Boolean Algebra Flashcards

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1
Q

What 3 gates make up a full adder?

A

AND
OR
XOR

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2
Q

What type of logical circuit is a D-type flip-flop?

A

A sequential logic circuit

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3
Q

What is needed to change the state of D-type flip-flops?

A

A clock or an oscillator

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4
Q

What does the D in D-type flip-flop stand for?

A

Data or delay

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5
Q

What is meant by a positive edge-triggered flip-flop? (D-type flip-flop)

A

A D-type flip-flop can only change the output value from 0 to 1 or vice versa when the clock is at a rising or positive edge. i.e. at the beginning of a clock period.

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6
Q

What is meant by a rising or positive edge in a clock cycle?

A

On a diagram depicting the change in state of a clock, a rising or positive edge is the one that shoots up from 0 to 1. It represents the start of a clock period.

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7
Q

Why are D-type flip-flops important?

A

They can store the state of a bit and act as memory.

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8
Q

What happens in a D-type flip-flop when the clock is not at a positive edge?

A

The input value in the flip-flop is held and does not change.

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9
Q

How is Q (the output) related to D (the input) and C (the clock) in a D-type flip-flop?

A

The output Q assumes the value currently at D whenever the clock reaches a rising edge

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10
Q

Where are flip-flops used in modern CPUs?

A

The registers in the CPUs are all multiple flip-flops constructed in a row to store temporary information within a processor.

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11
Q
A
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