Description : Which of the following flip-flops is free from race condition ? (A) T flip-flop (B) SR flip-flop (C) Master-slave JK flip-flop (D) None of the above
Last Answer : (C) Master-slave JK flip-flop
Description : For SR latch whent the out put is undesirable a) 0, 0 b) 1, 0 c) 0, 1 d) 1, 1
Last Answer : Ans: 1, 1
Description : Which of the following pair of gates can form a latch? a. a pair of cross coupled OR b. a pair of cross copled AND c. a pair of cross coupled NAND d. a cross coupled NAND/OR
Last Answer : c. a pair of cross coupled NAND
Description : Which of the following conditions is not allowed in an RS latch? a. R is asserted, S is asserted b. R is asserted, S is negated c. R is negated, S is asserted d. R is negated, S is negated
Last Answer : a. R is asserted, S is asserted
Description : Of the following circuits, the one which involves storage is a. RS Latch b. mux c. nand d. decoder
Last Answer : a. RS Latch
Description : When the write enable input is not asserted, the gated D latch ______ its output. a. can not change b. clears c. sets d. complements
Last Answer : a. can not change
Description : Which statement is false about WR signal: a. WR signal controls the input buffer b. The bar over WR means that this is an active low signal c. The bar over WR means that this is an active high signal d. If WR is 0 then the input data reaches the latch input
Last Answer : c. The bar over WR means that this is an active high signal
Description : Which is an integral part of any microcomputer system and its primary purpose is to hold program and data: a. Memory unit b. Register unit c. A and B d. None of these
Last Answer : a. Memory unit
Description : In immediate addressing the operand is placed a. in the CPU register b. after OP code in the instruction c. in memory d. in stack
Last Answer : b. after OP code in the instruction
Description : A stack pointer is a. a 16-bit register in the microprocessor that indicate the beginning of the stack memory. b. a register that decodes and executes 16-bit arithmetic expression. c. The first memory location where a subroutine address is stored. d. a register in which flag bits are stored
Last Answer : a. a 16-bit register in the microprocessor that indicate the beginning of the stack memory.
Description : A stack is a. an 8-bit register in the microprocessor b. a 16-bit register in the microprocessor c. a set of memory locations in R/WM reserved for storing information temporarily during the execution of computer
Last Answer : c. a set of memory locations in R/WM reserved for storing information temporarily during the execution of computer
Description : Which of the following registers is used to keep track of address of the memory location where the next instruction is located? a. Memory Address Register b. Memory Data Register c. Instruction Register d. Program Register
Last Answer : d. Program Register
Description : Registers, which are partially visible to users and used to hold conditional, are known as a. PC b. Memory address registers c. General purpose register d. Flags
Last Answer : c. General purpose register
Description : Which of the following registers is used to keep track of address of the memory location where the next instruction is located? a. Memory address register b. Memory data register c. Instruction register d. Program counter
Last Answer : d. Program counter
Description : Which of the following registers is loaded with the contents of the memory location pointed by the PC? a. Memory address register b. Memory data register c. Instruction registers d. Program counter
Last Answer : c. Instruction registers
Description : CD-ROM a. Is a `semiconductor memory b. Memory register c. Magnetic memory d. None of the above
Last Answer : d. None of the above
Description : Interface electronic circuit is used to interconnect I/O devices to a computer’s CPU or a. ALU b. Memory c. Buffer d. Register
Last Answer : b. Memory
Description : A type of core store that has a lower access time than the devices used for working store in the same processor is known as a. Core memory b. Buffer c. Fast core d. Address register
Last Answer : d. Address register
Description : Which of the following registers is loaded with the contents of the memory location pointed by the PC? a. Memory address registers b. Memory data registers c. Instruction register d. Program counter
Last Answer : c. Instruction register
Description : CD-ROM is a a. Semiconductor memory b. Memory register c. Magnetic memory d. None of above
Last Answer : d. None of above
Description : Which register is connected to the memory by way of the address bus: a. MAR b. MDR c. SAM d. None of these
Last Answer : a. MAR
Description : MDR stands for: a. Memory data register b. Memory data recode c. Micro data register d. None of these
Last Answer : a. Memory data register
Description : MAR stands for: a. Memory address register b. Memory address recode c. Micro address register d. None of these
Last Answer : a. Memory address register
Description : Which register is used to communicate with memory: a. MAR b. MDR c. Both A and B d. None of these
Last Answer : c. Both A and B
Description : A set of register which contain are: a. data b. memory addresses c. result d. all of these
Last Answer : d. all of these
Description : What is the store by register: a. data b. operands c. memory d. None of these
Last Answer : a. data
Description : The register section is related to______ of the computer: a. Processing b. ALU c. Main memory d. None of these
Last Answer : c. Main memory
Description : The microprocessor can read/write 16 bit data from or to ________ A. memory B. I /O device C. processor D. register
Last Answer : The microprocessor can read/write 16 bit data from or to memory
Description : The load instruction is mostly used to designate a transfer from memory to a processor register known as_________ A. Accumulator B. Instruction Register C. Program counter D. Memory address Register
Last Answer : A. Accumulator
Description : Which register holds the item that is to be written into the stack or read out of the stack: a. SR b. IR Cc. RR d DR
Last Answer : d DR
Description : In register stack the top item is read from the stack into: a. SR b. IR Cc. RR d. DR
Last Answer : d. DR
Description : List the allowed register pairs of 8085.
Last Answer : • B-C register pair • D-E register pair • H-L register pair
Description : Which is the components of microprocessor: a. Register unit b. Arithmetic and logical unit c. Timing and control unit d. All of these
Last Answer : d. All of these
Description : The most common addressing techiniques employed by a CPU is a. immediate b. direct c. indirect d. register e. all of the above
Last Answer : e. all of the above
Description : A structure that stores a number of bits taken "together as a unit" is a a. gate b. mux c. decoder d. register
Last Answer : d. register
Description : In 8051,After reset the SP register is initialized to address________. a. 8H b) 9H c) 7H
Last Answer : c) 7H
Description : In an 8085 microprocessor, the instruction CMP B has been executed while the contentsof accumulator is less than that of register B. As a result carry flag and zero flag will berespectively (A) set, reset (B) reset, set (C) reset, reset (D) set, set
Last Answer : (A) set, reset
Description : A set of information that defines the status of resources allocated to a process is a. Process control b. ALU c. Register Unit d. Process description
Last Answer : d. Process description
Description : The terminal device that functions as a cash register, computer terminal, and OCR reader is the: a. Data collection terminal b. OCR register terminal c. Video Display terminal d. POS terminal
Last Answer : d. POS terminal
Description : The ____ place the data from a register onto the data bus: a. CPU b. ALU c. Both A and B d. None of these
Last Answer : a. CPU
Description : The information is transferred from the_____ and ____ specified register: a. MDR b. CPU c. Both A and B
Description : How many bit of MAR register: a. 8-bit b. 16-bit c. 32-bit d. 64-bit
Last Answer : b. 16-bit
Description : _____ a subsystem that transfer data between computer components inside a computer or between computer: a. Chip b. Register c. Processor d. Bus
Last Answer : d. Bus
Description : The 16 bit register is separated into groups of 4 bit where each groups is called: a. BCD b. Nibble c. Half byte d. None of these
Last Answer : b. Nibble
Description : Which is the important part of a combinational logic block: a. Index register b. Barrel shifter c. Both a & b d. None of these
Last Answer : b. Barrel shifter
Description : How many bit stored by status register: a. 1 bit b. 4 bit c. 6 bit d. 8 bit
Last Answer : a. 1 bit
Description : The processor uses the stack to keep track of where the items are stored on it this by using the: a. Stack pointer register b. Queue pointer register c. Both a & b d. None of these
Last Answer : a. Stack pointer register
Description : Which is used to store critical pieces of data during subroutines and interrupts: a. Stack b. Queue c. Accumulator d. Data register
Last Answer : a. Stack
Description : The status register is also called the____: a. Condition code register b. Flag register c. A and B d. None of these
Last Answer : c. A and B