5.5 Logic Circuits Flashcards

1
Q

What does binary 0 typically represent?

A

0 Volts

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2
Q

What does Binary 1 typically Represent?

A

+5 Volts

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3
Q

What does Binary 0 actually represent?

A

0 to 0.8V

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4
Q

What does Binary 1 actually represent?

A

2 and 5 Volts

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5
Q

Boolean 0 and 1 do not represent actual numbers but the state of a voltage variable, which is called?

A

Logic Level

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6
Q

In Boolean algebra what are the 3 basic operations?

A

AND, OR, NOT

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7
Q

Logic circuits are formed by?

A

Combining many logic gates.

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8
Q

What gate is this?

A

OR

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9
Q

Which gate does this table belong to?

A

OR

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10
Q

Which gate does this circuit belong to?

A

OR

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11
Q

Which gate is this?

A

AND

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12
Q

Which gate does this table belong to?

A

AND

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13
Q

Which gate does this circuit belong to?

A

AND

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14
Q

What does the small circle on a gate denote?

A

Inversion

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15
Q

Which gate is this?

A

NOT

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16
Q

Which gate does this table belong to?

A

NOT

17
Q

How are 3 input AND gates constructed?

A

By adding 2 AND gates together.

18
Q

If at the end of any logic gate circuit it ends with an OR gate and has a single input of 1 what will the output be?

A

Always 1.

19
Q

Which gate is this?

A

NAND

20
Q

Which gate is this?

A

NOR

21
Q

Which gate does this circuit belong to?

A

NOR, Note switches below output

22
Q

What are the Universal gates?

A

NOR and the NAND

23
Q

Describe the Buffer.

A

Single input device which has a gain of 1 , mirroring the input at the output.

24
Q

Describe the inverting buffer

A

Single input device producing the state opposite of the input

25
Q

What do these 2 IEEE symbols represent?

A

Buffer (Top) and Inverting Buffer

26
Q

What is the purpose of a Flip Flop?

A

It stores a Single Bit of Binary data, it will maintain a state of 1 or 0 until directed to change its state.

27
Q

What are the common applications of Flip Flops?

A

Counters, Registers, Frequency Divider Circuits and Data Transfer.

28
Q

A circuit that has 2 stable states is called a?

A

Flip flop or Latch Circuit.

29
Q

What is required to latch an SR Flip Flop Circuit?

A

A Pulsed input.

30
Q

Describe what happens in an Invalid State.

A

When the inputs cause the outputs to be either all high or all low.

31
Q

When is a NAND SR in the invalid state?

A

Both inputs LOW

32
Q

When is a NOR SR in an invalid state?

A

Both inputs HI

33
Q

What can be used to prevent the presence of switch bounce?

A

NAND latch.