7-8.
The (a) address lines and the (b) I/O data
lines are usually tied to what buses?
1.
(a)
(b)
2.
(a)
(b)
3.
(a)
(b)
4.
(a)
(b)
Computer or memory system
bus
Computer or memory system
bus
Computer or memory system
bus
Data bus
Data bus
Computer or memory system
bus
Data bus
Data bus
7-9.
During a SRAM read cycle, what is (a) the
status of the write enable and (b) the mode
of the data buffers?
1. (a) True (b) input
2. (a) True (b) output
3. (a) False (b) input
4. (a) False (b) output
IN ANSWERING QUESTION 7-10, REFER TO
FIGURE 6-32 ON PAGE 6-25 OF THE TRAMAN.
7-10.
Each dynamic RAM cell consists of which
of the following devices?
1. One MOS transistor only
2. One tiny capacitor only
3. One MOS transistor and one tiny
capacitor only
4. Many MOS transistors and several
tiny capacitors
7-11.
DRAM cells do not retain their charged
state for more than a few milliseconds.
This degradation is due to which of the
following factors?
7-12.
To retain their charged state, DRAMs must
be refreshed. Of the following methods,
which one is (a) more cost effective
because it uses what (b) device?
1.
(a)
(b)
2.
(a)
(b)
3.
(a)
(b)
4.
(a)
(b)
Internal
Battery backup
Internal
Single refresh address
generator
External
Battery backup
External
Single refresh address
generator
7-13.
In DRAM organization, the data input and
data output lines may be tied together in
what type of application, if any?
1. One that uses a unidirectional data bus
2. One that uses a bidirectional data bus
3. None, they are never tied together
7-14.
Compared to a SRAM, a DRAM has all
except which of the following advantages?
1. It retains its charged state
2. It has lower power consumption
3. It has higher density
4. It is less complex
7-15.
Programs stored on ROM are often referred
to as firmware for which of the following
reasons?
1. They are software only
2. They are hardware only
3. They are more hardware than software
4. They write data into the ROM address
1. Time only
2. Temperature only
3. Time and temperature
4. Temperature and power
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