42
4-66. To increase the value of a word by one
power of 2, how many shifts are
required?
1. 1
2. 2
3. 3
4.
0
4-67. Which of the following operations takes
the longest time?
1. Serial in, parallel out
2. Serial in, serial out
3. Parallel in, serial out
4. Parallel in, parallel out
4-68. Shifting a word in a shift register 3
places to the left is equal to multiplying
the number by how much?
1. 1010
2. 210
3. 810
4. 410
4-69. Logic families are identified by which
of the following means?
1. Logic polarity required
2. The types of elements used
3. Size and cost of manufacture
4. Packaging (DIP, TO, flat packs)
4-70. A TTL logic circuit would use which of
the following types of elements?
1. Diode-transistor
2. Resistor-transistor
3. Transistor-transistor
4. Complementary metal oxide
semiconductors
