Digital Electronics Review

Express 23,400,000 in Scientific Notation.
a.  2.34 x 10⁶
b.  23.4 x 10⁶
c.  2.34 x 10⁷
d.  23.4 x 10⁷ 

• A.
• B.
• C.
• D.

Express 0.57 in Engineering Notation.
a.  5.7 x 10^-1
b.  570 x 10³
c.  0.57 x 10^-2 
d.  570 x 10^-3

• A.
• B.
• C.
• D.

Find the nominal value of the resistor picture:
 (brown-orange-green-silver)
a.  1.3 MΩ +/- 10%
b.  1.35 Ω +/- 20%
c.  13 MΩ +/- 10%
d.  135 MΩ +/- 5%    

• A.
• B.
• C.
• D.

Find the nominal value of the resistor picture:
 (brown-gray-brown-gold)

a.  1.81 Ω +/- 5%
b.  180 Ω +/- 5%
c.  1.81 kΩ +/- 10%
d.  18 Ω +/- 10%
   

• A.
• B.
• C.
• D.

Find the nominal value of the disc capacitor picture:
a.  100000 F +/- 10%
b.  104 pF +/- 10%
c.  1.04 kF +/- 10%
d.  100 nF +/- 10%

• A.
• B.
• C.
• D.

Digital Signals have how many defined levels?
a.  0
b.  1
c.  2
d.  infinite

• A.
• B.
• C.
• D.

Use Ohm’s law to calculate the unknown quantity.
a.  30.8 kV
b.  0.0308 V
c.  30.8 mV
d.  30.8 V

• A.
• B.
• C.
• D.

In the parallel circuit below, if I_T = 108 mA, find R_T.
a.  155.23 Ω
b.  5.23 k Ω
c.  138.89 Ω
d.  543.3 Ω

• A.
• B.
• C.
• D.

What is the hexadecimal equivalent to the decimal
number 26₁₀?
a.  8_H
b.  1A_H
c.  A1_H
d.  20_H

• A.
• B.
• C.
• D.

When comparing TTL logic gates to CMOS gates, which of the following statements is true?
a.  CMOS is less sensitive to static electricity.
b.  CMOS uses less power.
c.  CMOS IC’s are obsolete.
d.  CMOS and TTL logic gates are identical.

• A.
• B.
• C.
• D.