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PLTW Digital Electronics - Final Review Set 1, PLTW Digital Electronics - Final Review Set 2, PLTW Digital Electronics - Final Review Set 3, Digital Electronics - PLTW Review Test

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PLTW Digital Electronics - Final Review Set 1, PLTW
Digital Electronics - Final Review Set 2, PLTW Digital
Electronics - Final Review Set 3, Digital Electronics -
PLTW Review Test
If an integrated circuit has been damaged and you smell smoke, you
should__________________.
Turn the power off for a few minutes before pulling out the damaged integrated circuit.
In scientific notation, which prefixes are used for values smaller than a whole
value?
Micro, nano, milli
What is the value of the resistor with colors blue, grey, red , gold ?
6.8 K Ω ±5 %
What are the color bands for a 390 Ω (±10) resistor?
ORANGE-WHITE-BROWN-SILVER
In a parallel circuit, you measure 1.5 mAmps flowing through a 600 Ω resistor.
What is the voltage drop across the resistor? Use Ohms law.
900 m Volts
What is the decimal equivalent to the binary number 0101102?
22 power of 10
In the eight-bit binary number shown below, which bit is the Least Significant Bit
(LSB)?
b7b6 b5 b4 b3 b2 b1 b0
10110101
B 0 (zero)
Which of the following is a rule of Boolean algebra?

1. AA • 0 = A
2. AB • 1= 1
3. A • A = A
4. AC • A = 1
A•A=A
What is the binary equivalent to the decimal number 1310?
1101
What is the decimal equivalent to the binary number 0101102?
22 base 10
What is the binary equivalent to the hexadecimal number CH
11002
Which of the following equations is the un-simplified Sum-Of-Products equation
for the truth table shown below with F as the Output?

XYZF
0000
0011

,0101
0110
1000
1010
1101
1110
F = X' Y' Z + X' Y Z' + X Y Z'
What is the letter symbol for current?
I
Which of the following is a correct DeMorgan's Identity?
1.. XY" = X'•Y'
2. XY" = X'•Y
3. XY" = X' + Y'
4. XY = X + Y
XY" = X' + Y'
. Which of the following is the simplified equivalent for the Boolean equation
shown?
F = Y' +XY'
1. F = X ''Y''
2. F = X
3. F = X Y'
4. F = Y'
F = Y'
Which Boolean equation is in Product-Of-Sums form?

1. F = X Y Z + X Y + X Y Z
2. F = X Y Z + Z (X + Y)
3. F = (X + Y)(X+ Z)(Y + Z)
4. F = X Z(Y + Z)(Y + Z)
F = (X + Y)(X+ Z)(Y + Z)
Which of the following Boolean equation is in Sum-Of-Products form?
1. F = A B' C + A B C + A
2. F = (A')(B')(BC)(ABC)
3. F = (10010)11101001)
4. F = A' (B + C) A (B' + C)
F = A B' C + A B C + A
What is the minimum number of flip-flops needed to build a Mod-10
Asynchronous counter?
1. 32
2. 64
3. 4
4. 10
4
Which of the following statements applies to asynchronous counters?

1. Asynchronous counters are faster than synchronous counters.

, 2. Asynchronous counters require more power than synchronous counters.

3. All the flip-flops in an Asynchronous counter are clocked at the same time by a
common external clock.

4. Asynchronous counters are also called ripple counters.
Asynchronous counters are also called ripple counters.
Propagation delay is _________________________.

1. A measure of the ability of a logic gate to drive further logic gates.

2. The difference in chip temperature from when the power is off to when the
power is on.

3. The difference between what a logic gate outputs as a valid logic voltage and
what the input of the next gates expects to see as a valid logic voltage.

4. The time required for a signal to travel from
the input of a logic gate to the output.
The time required for a signal to travel from
the input of a logic gate to the output.
Name the type of gate that is off when it is switched to the on position

1. And
2. Nand
3. Or
4. Inverter
Inverter
Name three processes for simplifying circuits

1.Boolean Algebra, Boolean Equations, Karnaugh maps
2.Boolean Geometry, Demorgans Theroem, Break the bar change the sign
3.Karnaugh Mapping, Demorgans Theorem, Boolean algebra
4.Simplify terms, karnaugh mapping, looping like terms
Karnaugh Mapping, Demorgans Theorem, Boolean algebra
What type of gates can be used to replace an AOI circuit to make it smaller?

1. Exclusive OR/NOR
2. OR/AND
3. Inverter/NAND
4. NAND/NOR
NAND/NOR
How many flip-flops are required to implement a divide-by-4 circuit?
1. 4
2. 3

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