1. How many 1K × 4 RAM chips would be required to build a 1K × 8 memory system ?

2

4

8

16

Answer: 2

Explanation:


2. A PLA can be ?

as a microprocessor

as a dynamic memory

to realize sequential logic

to realize a combinational logic

Answer: to realize a combinational logic

Explanation:

PLA is a fixed architecture logic device with programmable AND gates followed by programmable OR gates. PLA can be used to implement a complex combinatorial circuits


3. The internal structure of PLA is similar to ?

RAM

ROM

both RAM and ROM

neither RAM nor ROM

Answer: neither RAM nor ROM

Explanation:

Note, that PLA has programmable AND array whose product term output feeds a programmable OR array .So the structure is not like a RAM or ROM


4. As access time is decreased, the cost of memory ?

remains the same

increases

decreases

may increase of decrease

Answer: increases

Explanation:

As the access time of memory is decreased its cost will increase. Fast memories are costly


5. How many address bits are needed to select all memory locations in the 2118 16K × 1 RAM ?

8

10

14

16

Answer: 14

Explanation:


6. An 8-bit address code can select ________ ?

8 locations in memory

256 locations in memory

65,536 locations in memory

131,072 locations in memory

Answer: 256 locations in memory

Explanation:


7. How many storage locations are available when a memory device has 12 address lines ?

144

512

2048

4096

Answer: 4096

Explanation:


8. How many 2K × 8 ROM chips would be required to build a 16K × 8 memory system ?

2

4

8

16

Answer: 8

Explanation:


9. Which memory requires periodic recharging ?

All ROMS

ALL RAMS

Static RAM

Dynamic RAM

Answer: Dynamic RAM

Explanation:

D-RAMs, needs periodic refreshing


10. Which memory does not require programming equipment ?

RAM

EPROM

EEPROM

UVPROM

Answer: RAM

Explanation: