11. It retains its content when power is removed. What type of memory is this?
A. Volatile memory
B. Nonvolatile memory
C. RAM
D. SRAM
Answer: B
Nonvolatile devices are those which always retain their content even when an abrupt change occurs and nonvolatile memory is a kind of such device. But RAM is a volatile memory which is primary storage that can only access its data only when the device is powered and SRAM is a type of RAM which is called Static RAM.
12. Name a volatile memory.
A. RAM
B. EPROM
C. ROM
D. EEPROM
Answer: A
Volatile memory is those which can access data only when the device is powered.
13. Name a nonvolatile memory.
A. ROM
B. RAM
C. SRAM
D. DRAM
Answer: A
Non-volatile memory is the one that retains its content even when the power is removed. This is done by an on-chip read-only memory (ROM) or an external EPROM. The software that it contains the program which is capable of obtaining the full software from another source within or outside of the system. This initialization routine is also referred to as a bootstrap program or routine.
14. The initial routine is often referred to as
A. Initial program
B. Bootstrap program
C. Final program
D. Initial embedded program
Answer: B
ROM contains the program which is capable of obtaining the full software from another source within or outside of the system. This initialization routine is also referred to as a bootstrap program or routine.
15. What kind of socket does an external EPROM to plugged in for prototyping?
A. Piggyback
B. Single socket
C. Multi-socket
D. Piggyback reset socket
Answer: A
Some controllers use a special package called a piggyback socket on the top of the package to allow the EPROM for prototyping.
16. Which one of the following is UV erasable?
A. Flash memory
B. SRAM
C. EPROM
D. DRAM
Answer: C
EPROM is an erasable program and it can be erased by ultraviolet radiation. SRAM and DRAM are volatile memories. Flash memory to is a volatile memory but it is not UV erasable.
17. What kind of memory does an OTP have?
A. SRAM
B. RAM
C. EPROM
D. DRAM
Answer: C
OTP is one-time programming so it should possess a nonvolatile memory and EPROM is a nonvolatile memory whereas SRAM, DRAM, and RAM are volatile memories.
18. Which type of memory is suitable for low volume production of embedded systems?
A. ROM
B. Volatile
C. Non-volatile
D. RAM
Answer: C
The devices which use non-volatile memory allow the software to download and returned to the device. UV erasable EPROM is favorable but EEPROM is also gaining favor. Therefore, this type of memory is used in low volume production.
19. Which is the single device capable of providing prototyping support for a range of microcontrollers?
A. ROM
B. Umbrella device
C. OTP
D. RAM
Answer: B
The umbrella device is capable of providing prototyping support for a range of microcontrollers.
20. What type of memory is suitable for high volume production?
A. RAM
B. ROM
C. EPROM
D. EEPROM
Answer: B
Read-Only Memory is suitable for high volume production since it is a nonvolatile memory.
