260 + Interview Questions in Memory Devices in Digital Circuits Page 4 InterviewSolution

151.	Which part of a Flash memory architecture manages all chip functions?(a) Program verify code(b) Floating-gate MOSFET(c) Command code(d) Input/Output pinsThe question was asked in class test.My question is based upon Programmable Read Only Memory in section Memory Devices of Digital Circuits
Answer» Right answer is (b) Floating-gate MOSFET Explanation: MOSFET technology is the best ONE in the MANUFACTURING of chip because it has HIGH flexibility and storage capacity. Thus, Floating-Gate MOSFET part of a FLASH Memory architecture manages all chip functions.

Discussion

152.	How can ultraviolet erasable PROMs be recognized?(a) There is a small window on the chip(b) They will have a small violet dot next to the #1 pin(c) Their part number always starts with a “U”, such as in U12(d) They are not readily identifiable, since they must always be kept under a small coverThe question was asked in a national level competition.I want to ask this question from Programmable Read Only Memory topic in portion Memory Devices of Digital Circuits
Answer» Correct choice is (a) There is a small window on the chip Best EXPLANATION: An ULTRAVIOLET erasable PROMs have small window on the chip with BLACK marked. Such type of PROMS are called EPROMS which are cleared by exposing it to UV radiation. They are re-programmable.

Discussion

153.	The bit capacity of a memory that has 2048 addresses and can store 8 bits at each address is ___________(a) 4096(b) 16384(c) 32768(d) 8129The question was asked in class test.I'm obligated to ask this question of Programmable Read Only Memory in chapter Memory Devices of Digital Circuits
Answer» Right ANSWER is (b) 16384 Explanation: 1 address can store 8 bits. Therefore, TOTAL capacity of a memory having N addresses = 8 * n. Therefore, for 2048 addresses, total capacity of a memory = 2048 * 8 = 16384 bits.

Discussion

154.	How many 8 k × 1 RAMs are required to achieve a memory with a word capacity of 8 k and a word length of eight bits?(a) Eight(b) Two(c) One(d) FourI had been asked this question by my college director while I was bunking the class.The query is from Programmable Read Only Memory topic in division Memory Devices of Digital Circuits
Answer» RIGHT OPTION is (a) Eight The explanation: RAM stands for Random Access Memory in which any memory address can be accessed in any ORDER. It requires WORD of length 8 bits. So, one word NEEDS of 1 bit and 8 bit requires 8 bits.

Discussion

155.	Which of the following best describes the fusible-link PROM?(a) Manufacturer-programmable, reprogrammable(b) Manufacturer-programmable, one-time programmable(c) User-programmable, reprogrammable(d) User-programmable, one-time programmableThis question was posed to me during an interview.Asked question is from Programmable Read Only Memory in section Memory Devices of Digital Circuits
Answer» The CORRECT CHOICE is (d) User-programmable, one-time programmable To explain: The fusible-link PROM is user programmable and one time programmable. It means that a written program can not be reprogrammed. EPROMs can be ERASED and re-programmed.

Discussion

156.	Which of the following is programmed electrically by the user?(a) ROM(b) EPROM(c) PROM(d) EEPROMThe question was asked by my school principal while I was bunking the class.This key question is from Programmable Read Only Memory topic in portion Memory Devices of Digital Circuits
Answer» The correct CHOICE is (c) PROM Easiest EXPLANATION: Programmable ROMs can be programmed electrically by the USER but can’t be reprogrammed. EEPROMs can be electrically ERASED and re-programmed by the user.

Discussion

157.	PROMs are available in ___________(a) Bipolar and MOSFET technologies(b) MOSFET and FET technologies(c) FET and bipolar technologies(d) MOS and bipolar technologiesThis question was addressed to me during an online interview.My question is from Programmable Read Only Memory in portion Memory Devices of Digital Circuits
Answer» Correct choice is (d) MOS and bipolar TECHNOLOGIES The explanation: PROMs (Programmable ROMs) can be programmed electrically by the USER but can’t be REPROGRAMMED. PROMs are AVAILABLE in both bipolar and MOS (Metal Oxide Semiconductor) technologies.

Discussion

158.	The time from the beginning of a read cycle to the end of tACS/tAA is called as ____________(a) Write enable time(b) Data hold(c) Read cycle time(d) Access timeI got this question during a job interview.Asked question is from Programmable Read Only Memory in section Memory Devices of Digital Circuits
Answer» Right choice is (d) Access time Easy explanation: The time from the beginning of a READ cycle to the END of tACS/tAA is called as access time. It is the time in which data is FETCHED from the storage.

Discussion

159.	Why did PROM introduced?(a) To increase the storage capacity(b) To increase the address locations(c) To provide flexibility(d) To reduce the sizeThe question was posed to me by my college director while I was bunking the class.I'm obligated to ask this question of Programmable Read Only Memory topic in division Memory Devices of Digital Circuits
Answer» Right OPTION is (c) To provide flexibility Easiest explanation: In order to provide some flexibility in the possible applications of ROM, PROM is INTRODUCED. PROM STANDS for Programmable ROM, in which the ROM is programmed by the USER.

Discussion

160.	ROMs are used to __________(a) Store bootstrap program(b) Character generation(c) Code conversion(d) All of the MentionedI have been asked this question by my school principal while I was bunking the class.Question is taken from Read Only Memory (ROM) in chapter Memory Devices of Digital Circuits
Answer» Correct option is (d) All of the Mentioned To explain I would say: ROM stands for Read Only MEMORY in which data is permanently stored, EVEN when the power is turned off. It is USED to store BOOTSTRAP PROGRAM, character generation and code conversion.

Discussion

161.	What does CS mean in a chip?(a) Storing Capacity(b) Custom Select(c) Chip Select(d) Custom StorageI got this question by my college professor while I was bunking the class.This key question is from Read Only Memory (ROM) in division Memory Devices of Digital Circuits
Answer» CORRECT answer is (c) Chip Select The best I can explain: CS means chip select and with the HELP of CS a chip is activated/deactivated. It is used for enabling or disabling the function of the chip.

Discussion

162.	Which of the following has the capability to store the highest bits of data?(a) TMS 45276(b) IC 74188(c) IC 74187(d) IC 74185The question was asked in an interview.My question is from Read Only Memory (ROM) topic in chapter Memory Devices of Digital Circuits
Answer» Correct option is (a) TMS 45276 For explanation I would say: TMS 45276 has the capability to store the highest BITS of data because of 32768 * 8 = 12,62,144 ORGANIZATION.

Discussion

163.	TMS 45276 is of __________(a) 32 KB(b) 56 KB(c) 8 bits(d) 4 bytesI got this question in an interview.I'm obligated to ask this question of Read Only Memory (ROM) topic in portion Memory Devices of Digital Circuits
Answer» CORRECT choice is (a) 32 KB To explain I would SAY: TMS 45276 is known as MOS static ROM and it is made up of MOSFETS. In ROM, the data remains even when the power is switched off. TMS 45276 is of 32 KB.

Discussion

164.	Which of the following is known as MOS static ROM?(a) TMS 45276(b) TMS 45278(c) TMS 45279(d) TMS 45275This question was posed to me at a job interview.The query is from Read Only Memory (ROM) in portion Memory Devices of Digital Circuits
Answer» Right CHOICE is (a) TMS 45276 Explanation: TMS 45276 is KNOWN as MOS STATIC ROM and it is MADE up of MOSFETs.

Discussion

165.	Which IC is known as bipolar ROM?(a) IC 74187(b) IC 74189(c) IC 74188(d) IC 74186This question was posed to me by my college professor while I was bunking the class.My question is based upon Read Only Memory (ROM) in division Memory Devices of Digital Circuits
Answer» The correct choice is (c) IC 74188 To EXPLAIN: IC 74188 is known as bipolar ROM SINCE it is MADE up of TTL logic.

Discussion

166.	How many address location a bipolar ROM has?(a) 16(b) 32(c) 64(d) 8The question was asked in final exam.The query is from Read Only Memory (ROM) in division Memory Devices of Digital Circuits
Answer» Correct OPTION is (B) 32 Easy explanation: BIPOLAR ROM means IC 74188 and it is organized as 32 * 8. Thus, it has 32 rows and 8 columns. So, it has 32 ADDRESS locations and each of which has 8 bits of storage.

Discussion

167.	Which of the following IC is of 256 bit?(a) IC 74187(b) IC 74189(c) IC 74188(d) IC 74186I got this question during a job interview.My enquiry is from Read Only Memory (ROM) in section Memory Devices of Digital Circuits
Answer» The CORRECT option is (c) IC 74188 The EXPLANATION is: IC 74188 is of 256 BITS. Since, it is ORGANISED as 32 * 8 = 256. Thus, it has 32 rows and 8 columns.

Discussion

168.	How many rows and columns are present in IC 74187?(a) 128, 3(b) 128, 4(c) 256, 3(d) 256, 4I got this question during an interview for a job.Asked question is from Read Only Memory (ROM) in chapter Memory Devices of Digital Circuits
Answer» The correct option is (d) 256, 4 Easy EXPLANATION: IC 74187 is organised as 256 * 4, hence it has 256 rows and 4 columns. IC 74187 is of 1024 bits because it is ORGANIZED as 256 * 4.

Discussion

169.	IC 74187 is of __________(a) 512 bits(b) 1024 bits(c) 256 bits(d) 68 bitsI had been asked this question in an interview for job.The above asked question is from Read Only Memory (ROM) topic in section Memory Devices of Digital Circuits
Answer» CORRECT OPTION is (b) 1024 bits Explanation: IC 74187 is of 1024 bits because it is ORGANISED as 256 * 4. Thus, it has 256 rows and 4 columns.

Discussion

170.	Which IC is a typical MSI/TTL based?(a) IC 74187(b) IC 74189(c) IC 74188(d) IC 74186The question was posed to me at a job interview.Asked question is from Read Only Memory (ROM) topic in chapter Memory Devices of Digital Circuits
Answer» RIGHT choice is (a) IC 74187 Easiest EXPLANATION: MSI/TTL stands for MEDIUM Scale Integration of Transistor-Transistor Logic. IC 74187 is a TYPICAL MSI/TTL based.

Discussion

171.	The total storage capacity of 16 * 8 ROM is __________(a) 8 bits(b) 16 bits(c) 128 bits(d) 64 bitsThis question was posed to me during an online exam.Enquiry is from Read Only Memory (ROM) topic in section Memory Devices of Digital Circuits
Answer» Right option is (c) 128 bits To explain: ROM stands for Read Only Memory in which DATA is stored permanently and wherefrom data can only be read and rarely modified. The total storage CAPACITY of 16 * 8 ROM is 128 bits (i.e. 16 * 8 = 128).

Discussion

172.	Mask programming is also known as __________(a) EPROM(b) PROM(c) Custom programming(d) Both PROM and EPROMThis question was posed to me at a job interview.My question is based upon Read Only Memory (ROM) in portion Memory Devices of Digital Circuits
Answer» Right ANSWER is (c) Custom programming To explain: MASK programming is also known as custom programming. Mask ROM is PERMANENTLY programmed during the manufacturing process. Whereas, PROM(Programmable ROM) is programmed by the user.

Discussion

173.	Which programming is done during the manufacturing process?(a) Mask Programming(b) PROM(c) Both PROM and mask programming(d) EPROMI got this question by my school teacher while I was bunking the class.This interesting question is from Read Only Memory (ROM) in portion Memory Devices of Digital Circuits
Answer» The correct CHOICE is (a) Mask Programming For explanation I WOULD SAY: Mask ROM is permanently PROGRAMMED during the manufacturing process. Whereas, PROM(Programmable ROM) is programmed by the USER.

Discussion

174.	A photographic negative is called a ____________(a) Photo(b) Negative(c) Mask(d) Virtual imageI got this question in an online quiz.My query is from Read Only Memory (ROM) in chapter Memory Devices of Digital Circuits
Answer» Correct option is (c) Mask For EXPLANATION I would say: A photographic negative is called a mask is USED to CONTROL the electrical CONNECTIONS on the chip.

Discussion

175.	ROM may be programmed in _____ ways.(a) 2(b) 3(c) 4(d) 5The question was posed to me during an online exam.Question is from Read Only Memory (ROM) in division Memory Devices of Digital Circuits
Answer» The correct OPTION is (a) 2 The best explanation: ROM may be programmed in two DIFFERENT WAYS: (i) Mask PROGRAMMING & (ii) PROM. Mask Programming is done by the manufacture. Whereas, PROM(PROGRAMMABLE ROM) is programmed by the user.

Discussion

176.	A major disadvantage of the mask ROM is that ____________(a) It is time consuming to change the stored data when system requirements change(b) It is very expensive to change the stored data when system requirements change(c) It cannot be reprogrammed if stored data needs to be changed(d) It has an extremely short life expectancy and requires frequent replacementI had been asked this question in semester exam.This intriguing question comes from Read Only Memory (ROM) in division Memory Devices of Digital Circuits
Answer» Right choice is (c) It cannot be reprogrammed if stored data needs to be CHANGED The best EXPLANATION: A major disadvantage of the MASK ROM is that it cannot be reprogrammed if stored data needs to be changed. PROM stands for Programmable Read Only Memory in which the ROM can be externally programmed by the USER. EPROM stands for Erasable Programmable Read Only Memory, where the ROM and be cleared and re-programmed.

Discussion

177.	The computer’s main memory is __________(a) Hard drive and RAM(b) CD-ROM and hard drive(c) RAM and ROM(d) CMOS and hard driveThis question was addressed to me in final exam.I would like to ask this question from Read Only Memory (ROM) topic in division Memory Devices of Digital Circuits
Answer» Right choice is (c) RAM and ROM The best I can EXPLAIN: The COMPUTER’s main memory is RAM and ROM because all the storage related OPERATION are performed by the data present in RAM/ROM. RAM STANDS for Random Access Memory where any address can accessed in any order. ROM stands for Read Only Memory WHEREFROM data can only be read.

Discussion

178.	Which ROM can be erased by an electrical signal?(a) ROM(b) Mask ROM(c) EPROM(d) EEPROMI had been asked this question in class test.I'm obligated to ask this question of Read Only Memory (ROM) in chapter Memory Devices of Digital Circuits
Answer» Correct answer is (d) EEPROM Best explanation: In EPROM (Erasable PROGRAMMABLE ROMs), the ROM is cleared by exposing it to UV radiation and also it’s a tedious PROCESS. Whereas, in EEPROM, the ROM can be cleared electrically and thus is less TIME consuming and more efficient.

Discussion

179.	Which type of ROM has to be custom built by the factory?(a) EEPROM(b) Mask ROM(c) EPROM(d) PROMThis question was addressed to me in an online interview.The above asked question is from Read Only Memory (ROM) topic in division Memory Devices of Digital Circuits
Answer» Correct ANSWER is (b) Mask ROM Best explanation: All TYPES of ROM are programmable and can be programmed as PER requirement but the mask ROM is always programmed for specific application and it can’t be REPROGRAMMED. PROM stands for Programmable Read Only Memory in which the ROM can be externally programmed by the user. EPROM stands for ERASABLE Programmable Read Only Memory, where the ROM and be cleared and re-programmed.

Discussion

180.	What does the term “random access” mean in terms of memory?(a) Any address can be accessed in systematic order(b) Any address can be accessed in any order(c) Addresses must be accessed in a specific order(d) Any address can be accessed in reverse orderI had been asked this question in my homework.This question is from Read Only Memory (ROM) topic in division Memory Devices of Digital Circuits
Answer» The CORRECT option is (b) Any address can be ACCESSED in any order Easy explanation: “Random ACCESS” mean which can be accessed RANDOMLY and in other words any address can be accessed in any order.

Discussion

181.	In the floppy drive, data is written to and read from the disk via a magnetic _____ head mechanism.(a) Cluster(b) Read/Write(c) Cylinder(d) RecordableThe question was posed to me in final exam.Query is from Read Only Memory (ROM) topic in division Memory Devices of Digital Circuits
Answer» CORRECT answer is (b) Read/Write Easiest explanation: A floppy DISK is a removable disk USED for storing data via magnetic facilities. In the floppy DRIVE, data is written to and read from the disk via a magnetic read/write head mechanism.

Discussion

182.	Which of the following is not a part of Hard disk?(a) Platter(b) Read/Write(c) Valve(d) SpindleI have been asked this question in unit test.This intriguing question comes from Read Only Memory (ROM) topic in portion Memory Devices of Digital Circuits
Answer» The CORRECT option is (c) Valve For explanation: A valve is a device that regulates, directs or CONTROLS the flow of a fluid (gases, liquids, fluidized SOLIDS, or slurries) by opening, closing, or partially obstructing various PASSAGEWAYS. So, it is not a part of hard disk.

Discussion

183.	What is the major difference between DRAM and SRAM?(a) Dynamic RAMs are always active; static RAMs must reset between data read/write cycles(b) SRAMs can hold data via a static charge, even with power off(c) The only difference is the terminal from which the data is removed—from the FET Drain or Source(d) DRAMs must be periodically refreshedThe question was posed to me during an interview.My enquiry is from Read Only Memory (ROM) in chapter Memory Devices of Digital Circuits
Answer» Right option is (d) DRAMs MUST be PERIODICALLY refreshed The explanation is: DRAMs must be periodically refreshed so that it can store the new information. DRAMs are SLOWER compared to SRAMs as the access time for SRAM is less than that of DRAM.

Discussion

184.	Which bus is used for input and output in case of microprocessor operation?(a) Address bus(b) System bus(c) Control bus(d) Data busI had been asked this question during a job interview.I would like to ask this question from Read Only Memory (ROM) topic in section Memory Devices of Digital Circuits
Answer» RIGHT OPTION is (c) Control bus Explanation: The INPUT and output are used to control the function of a microprocessor. Hence, the control bus is used to TRANSFER the input and output signal from microprocessor to external peripherals and or from external peripherals to microprocessor.

Discussion

185.	What type of memory is not directly addressable by the CPU and requires special software called EMS (expanded memory specification)?(a) Extended(b) Expanded(c) Base(d) ConventionalI had been asked this question during an interview.My question comes from Read Only Memory (ROM) in portion Memory Devices of Digital Circuits
Answer» Right answer is (B) Expanded The explanation is: Expanded memory is not directly addressable by the CPU. Expanded memory is the ADDITIONAL memory which is incorporated beyond the PARENT memory limit of the PROCESSOR.

Discussion

186.	The full form of EEPROM is __________(a) Erasable Electrically Programmable ROMs(b) Electrically Erasable Programmable ROMs(c) Electrically Erasable Programming ROMs(d) Electrically Erasable Programmed ROMsI got this question during an interview.This key question is from Read Only Memory (ROM) in portion Memory Devices of Digital Circuits
Answer» Right OPTION is (b) Electrically Erasable Programmable ROMs Explanation: The FULL form of EEPROM is Electrically Erasable Programmable ROMs. In EPROM (Erasable Programmable ROMs), the ROM is cleared by exposing it to UV radiation and also it’s a tedious PROCESS. Whereas, in EEPROM, the ROM can be cleared electrically and THUS is less time CONSUMING and more efficient.

Discussion

187.	Which of the following best describes EPROMs?(a) EPROMs can be programmed only once(b) EPROMs can be erased by UV(c) EPROMs can be erased by shorting all inputs to the ground(d) EPROMs can be erased electricallyThis question was posed to me at a job interview.Enquiry is from Read Only Memory (ROM) in section Memory Devices of Digital Circuits
Answer» The CORRECT answer is (b) EPROMs can be erased by UV The best I can EXPLAIN: EPROM (Erasable Programmable ROMs), the ROM is cleared by exposing it to UV RADIATION and also it’s a tedious PROCESS. Whereas, in EEPROM, the ROM can be cleared electrically and thus is less time consuming and more efficient.

Discussion

188.	The Width of a processor’s data path is measured in bits. Which of the following are common data paths?(a) 8 bits(b) 12 bits(c) 16 bits(d) 32 bitsI got this question by my college professor while I was bunking the class.My doubt stems from Read Only Memory (ROM) in portion Memory Devices of Digital Circuits
Answer» The CORRECT answer is (a) 8 BITS Explanation: In generalised form, the data paths are of 8 bits. The data path, ALSO known as data bus, is the channel through which the PROCESSOR sends and receives data.

Discussion

189.	MOS ROM is constructed using __________(a) FETs(b) Transistors(c) MOSFETs(d) BJTsI had been asked this question in an interview for internship.Query is from Read Only Memory (ROM) topic in section Memory Devices of Digital Circuits
Answer» Right choice is (C) MOSFETs Explanation: MOS ROM is MADE up of MOSFETs. MOSFETs are Metal Oxide SEMICONDUCTOR Field Effect Transistors.

Discussion

190.	The MOS technology based semiconductor ROMs are classified into _____ categories.(a) 2(b) 3(c) 4(d) 5This question was posed to me in a national level competition.Query is from Read Only Memory (ROM) in chapter Memory Devices of Digital Circuits
Answer» Right choice is (b) 3 For explanation: The MOS technology based SEMICONDUCTOR ROMs are CLASSIFIED into three categories: Mask ROM, PROM,& EPROM. PROM stands for PROGRAMMABLE Read Only Memory in which the ROM can be externally programmed by the user. EPROM stands for Erasable Programmable Read Only Memory, where the ROM and be CLEARED and re-programmed.

Discussion

191.	VLSI chip utilizes ___________(a) NMOS(b) CMOS(c) BJT(d) All of the MentionedI have been asked this question by my college professor while I was bunking the class.My doubt stems from Read Only Memory (ROM) topic in division Memory Devices of Digital Circuits
Answer» The CORRECT answer is (d) All of the Mentioned Explanation: Very Large Scale INTEGRATION (VLSI) (ranging from 10,000 to 100,000 gates per IC) is a MEMORY chip which is made up of NMOS, CMOS, BJT, and BICMOS.

Discussion

192.	In ROM, each bit combination that comes out of the output lines is called ___________(a) Memory unit(b) Storage class(c) Data word(d) AddressI have been asked this question in quiz.Question is taken from Read Only Memory (ROM) topic in chapter Memory Devices of Digital Circuits
Answer» Correct answer is (c) Data word For explanation I would say: In ROM, each BIT COMBINATION that comes out of the output lines is called data word. USUALLY, a word CONSISTS of 16-bits or 2-bytes.

Discussion

193.	Why are ROMs called non-volatile memory?(a) They lose memory when power is removed(b) They do not lose memory when power is removed(c) They lose memory when power is supplied(d) They do not lose memory when power is suppliedThis question was addressed to me in unit test.The question is from Read Only Memory (ROM) in section Memory Devices of Digital Circuits
Answer» Right answer is (B) They do not LOSE memory when POWER is removed Easy explanation: Volatile memory stores data as long as it is POWERED. ROMS are called non-volatile memory because of they do not lose memory when power is removed.

Discussion

194.	In ROM, each bit is a combination of the address variables is called ___________(a) Memory unit(b) Storage class(c) Data word(d) AddressI got this question in an online interview.My enquiry is from Read Only Memory (ROM) topic in chapter Memory Devices of Digital Circuits
Answer» The CORRECT OPTION is (d) Address Easiest explanation: In ROM, each bit COMBINATION that comes out of the OUTPUT lines is called data word. Usually, a word consists of 16-bits or 2-bytes.

Discussion

195.	ROM is made up of ___________(a) NAND and OR gates(b) NOR and decoder(c) Decoder and OR gates(d) NAND and decoderThe question was posed to me during an interview for a job.Query is from Read Only Memory (ROM) in chapter Memory Devices of Digital Circuits
Answer» The correct ANSWER is (c) DECODER and OR gates Explanation: ROM (Read Only MEMORY) has the capability to store the information permanently. ROM is MADE up of decoder and OR gates within a single IC package.

Discussion

196.	The ROM is a ___________(a) Sequential circuit(b) Combinational circuit(c) Magnetic circuit(d) Static circuitThe question was posed to me at a job interview.This intriguing question comes from Read Only Memory (ROM) in division Memory Devices of Digital Circuits
Answer» The CORRECT choice is (B) Combinational circuit Easiest explanation: ROM is a combination of different ICs. So, it is a combinational circuit. It depends on PRESENT input and not past STATES.

Discussion

197.	Since, ROM has the capability to read the information only then also it has been designed, why?(a) For controlling purpose(b) For loading purpose(c) For booting purpose(d) For erasing purposeThe question was posed to me by my school principal while I was bunking the class.My question is taken from Read Only Memory (ROM) in division Memory Devices of Digital Circuits
Answer» CORRECT option is (C) For BOOTING purpose Explanation: ROM means “Read Only Memory”. Hence, it has capability to perform read OPERATION only. No write or erase operation could be performed in the ROM. It has DESIGNED to provide the computer with resident programmes and for booting purpose.

Discussion

198.	ROM has the capability to perform _____________(a) Write operation only(b) Read operation only(c) Both write and read operation(d) Erase operationThe question was posed to me in final exam.My enquiry is from Read Only Memory (ROM) topic in section Memory Devices of Digital Circuits
Answer» Correct choice is (b) READ operation only To explain I would say: ROM MEANS “Read Only Memory”. Hence, it has the capability to perform read operation only. No write or ERASE operation could be performed in the ROM.

Discussion

199.	Which of the following has the capability to store the information permanently?(a) RAM(b) ROM(c) Storage cells(d) Both RAM and ROMI got this question in an international level competition.The above asked question is from Read Only Memory (ROM) in section Memory Devices of Digital Circuits
Answer» Correct answer is (B) ROM Explanation: ROM (Read Only Memory) has the capability to store the information permanently. RAM PROVIDES RANDOM access to memory. Storage cells are RESPONSIBLE for the TRANSFER of data from and into the memory.

Discussion

200.	One of the most important specifications on magnetic media is the ____________(a) Polarity reversal rate(b) Tracks per inch(c) Data transfer rate(d) Rotation speedI got this question during a job interview.Query is from Introduction of Memory Devices in chapter Memory Devices of Digital Circuits
Answer» Correct CHOICE is (C) DATA TRANSFER rate Easiest explanation: The rate of data transfer depends on the properties of magnetic media.

Discussion

Explore topic-wise InterviewSolutions in .

Which part of a Flash memory architecture manages all chip functions?(a) Program verify code(b) Floating-gate MOSFET(c) Command code(d) Input/Output pinsThe question was asked in class test.My question is based upon Programmable Read Only Memory in section Memory Devices of Digital Circuits

The bit capacity of a memory that has 2048 addresses and can store 8 bits at each address is ___________(a) 4096(b) 16384(c) 32768(d) 8129The question was asked in class test.I'm obligated to ask this question of Programmable Read Only Memory in chapter Memory Devices of Digital Circuits

Which of the following is programmed electrically by the user?(a) ROM(b) EPROM(c) PROM(d) EEPROMThe question was asked by my school principal while I was bunking the class.This key question is from Programmable Read Only Memory topic in portion Memory Devices of Digital Circuits

ROMs are used to __________(a) Store bootstrap program(b) Character generation(c) Code conversion(d) All of the MentionedI have been asked this question by my school principal while I was bunking the class.Question is taken from Read Only Memory (ROM) in chapter Memory Devices of Digital Circuits

What does CS mean in a chip?(a) Storing Capacity(b) Custom Select(c) Chip Select(d) Custom StorageI got this question by my college professor while I was bunking the class.This key question is from Read Only Memory (ROM) in division Memory Devices of Digital Circuits

Which of the following has the capability to store the highest bits of data?(a) TMS 45276(b) IC 74188(c) IC 74187(d) IC 74185The question was asked in an interview.My question is from Read Only Memory (ROM) topic in chapter Memory Devices of Digital Circuits

TMS 45276 is of __________(a) 32 KB(b) 56 KB(c) 8 bits(d) 4 bytesI got this question in an interview.I'm obligated to ask this question of Read Only Memory (ROM) topic in portion Memory Devices of Digital Circuits

Which of the following is known as MOS static ROM?(a) TMS 45276(b) TMS 45278(c) TMS 45279(d) TMS 45275This question was posed to me at a job interview.The query is from Read Only Memory (ROM) in portion Memory Devices of Digital Circuits

Which IC is known as bipolar ROM?(a) IC 74187(b) IC 74189(c) IC 74188(d) IC 74186This question was posed to me by my college professor while I was bunking the class.My question is based upon Read Only Memory (ROM) in division Memory Devices of Digital Circuits

How many address location a bipolar ROM has?(a) 16(b) 32(c) 64(d) 8The question was asked in final exam.The query is from Read Only Memory (ROM) in division Memory Devices of Digital Circuits

Which of the following IC is of 256 bit?(a) IC 74187(b) IC 74189(c) IC 74188(d) IC 74186I got this question during a job interview.My enquiry is from Read Only Memory (ROM) in section Memory Devices of Digital Circuits

How many rows and columns are present in IC 74187?(a) 128, 3(b) 128, 4(c) 256, 3(d) 256, 4I got this question during an interview for a job.Asked question is from Read Only Memory (ROM) in chapter Memory Devices of Digital Circuits

IC 74187 is of __________(a) 512 bits(b) 1024 bits(c) 256 bits(d) 68 bitsI had been asked this question in an interview for job.The above asked question is from Read Only Memory (ROM) topic in section Memory Devices of Digital Circuits

Which IC is a typical MSI/TTL based?(a) IC 74187(b) IC 74189(c) IC 74188(d) IC 74186The question was posed to me at a job interview.Asked question is from Read Only Memory (ROM) topic in chapter Memory Devices of Digital Circuits

The total storage capacity of 16 * 8 ROM is __________(a) 8 bits(b) 16 bits(c) 128 bits(d) 64 bitsThis question was posed to me during an online exam.Enquiry is from Read Only Memory (ROM) topic in section Memory Devices of Digital Circuits

Mask programming is also known as __________(a) EPROM(b) PROM(c) Custom programming(d) Both PROM and EPROMThis question was posed to me at a job interview.My question is based upon Read Only Memory (ROM) in portion Memory Devices of Digital Circuits

A photographic negative is called a ____________(a) Photo(b) Negative(c) Mask(d) Virtual imageI got this question in an online quiz.My query is from Read Only Memory (ROM) in chapter Memory Devices of Digital Circuits

ROM may be programmed in _____ ways.(a) 2(b) 3(c) 4(d) 5The question was posed to me during an online exam.Question is from Read Only Memory (ROM) in division Memory Devices of Digital Circuits

The computer’s main memory is __________(a) Hard drive and RAM(b) CD-ROM and hard drive(c) RAM and ROM(d) CMOS and hard driveThis question was addressed to me in final exam.I would like to ask this question from Read Only Memory (ROM) topic in division Memory Devices of Digital Circuits

Which ROM can be erased by an electrical signal?(a) ROM(b) Mask ROM(c) EPROM(d) EEPROMI had been asked this question in class test.I'm obligated to ask this question of Read Only Memory (ROM) in chapter Memory Devices of Digital Circuits

Which type of ROM has to be custom built by the factory?(a) EEPROM(b) Mask ROM(c) EPROM(d) PROMThis question was addressed to me in an online interview.The above asked question is from Read Only Memory (ROM) topic in division Memory Devices of Digital Circuits

In the floppy drive, data is written to and read from the disk via a magnetic _____ head mechanism.(a) Cluster(b) Read/Write(c) Cylinder(d) RecordableThe question was posed to me in final exam.Query is from Read Only Memory (ROM) topic in division Memory Devices of Digital Circuits

Which of the following is not a part of Hard disk?(a) Platter(b) Read/Write(c) Valve(d) SpindleI have been asked this question in unit test.This intriguing question comes from Read Only Memory (ROM) topic in portion Memory Devices of Digital Circuits

Which bus is used for input and output in case of microprocessor operation?(a) Address bus(b) System bus(c) Control bus(d) Data busI had been asked this question during a job interview.I would like to ask this question from Read Only Memory (ROM) topic in section Memory Devices of Digital Circuits

MOS ROM is constructed using __________(a) FETs(b) Transistors(c) MOSFETs(d) BJTsI had been asked this question in an interview for internship.Query is from Read Only Memory (ROM) topic in section Memory Devices of Digital Circuits

The MOS technology based semiconductor ROMs are classified into _____ categories.(a) 2(b) 3(c) 4(d) 5This question was posed to me in a national level competition.Query is from Read Only Memory (ROM) in chapter Memory Devices of Digital Circuits

VLSI chip utilizes ___________(a) NMOS(b) CMOS(c) BJT(d) All of the MentionedI have been asked this question by my college professor while I was bunking the class.My doubt stems from Read Only Memory (ROM) topic in division Memory Devices of Digital Circuits

In ROM, each bit combination that comes out of the output lines is called ___________(a) Memory unit(b) Storage class(c) Data word(d) AddressI have been asked this question in quiz.Question is taken from Read Only Memory (ROM) topic in chapter Memory Devices of Digital Circuits

In ROM, each bit is a combination of the address variables is called ___________(a) Memory unit(b) Storage class(c) Data word(d) AddressI got this question in an online interview.My enquiry is from Read Only Memory (ROM) topic in chapter Memory Devices of Digital Circuits

ROM is made up of ___________(a) NAND and OR gates(b) NOR and decoder(c) Decoder and OR gates(d) NAND and decoderThe question was posed to me during an interview for a job.Query is from Read Only Memory (ROM) in chapter Memory Devices of Digital Circuits

The ROM is a ___________(a) Sequential circuit(b) Combinational circuit(c) Magnetic circuit(d) Static circuitThe question was posed to me at a job interview.This intriguing question comes from Read Only Memory (ROM) in division Memory Devices of Digital Circuits

ROM has the capability to perform _____________(a) Write operation only(b) Read operation only(c) Both write and read operation(d) Erase operationThe question was posed to me in final exam.My enquiry is from Read Only Memory (ROM) topic in section Memory Devices of Digital Circuits

Which of the following has the capability to store the information permanently?(a) RAM(b) ROM(c) Storage cells(d) Both RAM and ROMI got this question in an international level competition.The above asked question is from Read Only Memory (ROM) in section Memory Devices of Digital Circuits

One of the most important specifications on magnetic media is the ____________(a) Polarity reversal rate(b) Tracks per inch(c) Data transfer rate(d) Rotation speedI got this question during a job interview.Query is from Introduction of Memory Devices in chapter Memory Devices of Digital Circuits