Description : In latest generation computers, the instructions are executed A) Parallel only B) Sequentially only C) Both sequentially and parallel D) All of above
Last Answer : Answer : C
Description : In latest generation computers, the instructions are executed a. Parallel only b. Sequentially only c. Both sequentially and parallel d. All of above
Last Answer : Both sequentially and parallel
Last Answer : c. Both sequentially and parallel
Description : In 8086 microprocessor one of the following instructions is executed before an arithmeticoperation a. AAM b) AAD c) DAS d) DAA
Last Answer : b) AAD
Description : In 8086 microprocessor one of the following instructions is executed before an arithmetic operation a) AAM b) AAD c) DAS d) DAA
Description : In the third Generation of computers a. Distributed data processing first became popular b. An operating system was first developed c. High level procedural language were first used d. Online real time systems first become popular
Last Answer : d. Online real time systems first become popular
Description : In the third generation of computers: a. Distributed data processing first became popular b. An operating system was first developed c. High-level prcedu7ral languages were firs used d. On-line, real time systems first became popular
Last Answer : d. On-line, real time systems first became popular
Description : Microprocessors as switching devices are for which generation computers a. First Generation b. Second Generation c. Third Generation d. Fourth Generation
Last Answer : d. Fourth Generation
Description : Second Generation computers were developed during a. 1949 to 1955 b. 1956 to 1965 c. 1965 to 1970 d. 1970 to 1990
Last Answer : b. 1956 to 1965
Description : In which register instruction is decoded prepared and ultimately executed: a. Instruction register b. Current register c. Both a and b d. None of these
Last Answer : a. Instruction register
Description : _______ Stores the instruction currently being executed: a. Instruction register b. Current register c. Both a and b d. None of these
Description : When the RET instruction at the end of subroutine is executed, a. the information where the stack is iniatialized is transferred to the stack pointer b. the memory address of the RET instruction is ... two data bytes stored in the top two locations of the stack are transferred to the stack pointer
Last Answer : c. two data bytes stored in the top two locations of the stack are transferred to the program counter
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 : The instructions for starting the computer are house on a. Random access memory b. CD-Rom c. Read only memory chip
Last Answer : c. Read only memory chip
Description : Define stack and explain stack related instructions
Last Answer : The stack is a group of memory locations in the R/W memory thatis used for the temporary storage of binary information during the execution of the program. The stack related instructions are PUSH & POP
Description : Explain LDA, STA and DAA instructions
Last Answer : LDA copies the data byte into accumulator from the memory location specified by the 16-bit address. STA copies the data byte from theaccumulator in the memory location specified by 16-bit address. DAA changes the contents of the accumulator from binary to 4-bit BCD digits.
Description : List the four instructions which control the interrupt structure of the 8085 microprocessor.
Last Answer : • DI ( Disable Interrupts ) • EI ( Enable Interrupts ) • RIM ( Read Interrupt Masks ) • SIM ( Set Interrupt Masks )
Description : What is the difference between the shift and rotate instructions?
Last Answer : A rotate instruction is a closed loop instruction. That is, the data moved out at one end is put back in at the other end. The shift instruction loses the data that is moved out of the last bit locations.
Description : Explain the purpose of the I/O instructions IN and OUT.
Last Answer : The IN instruction is used to move data from an I/O port into the accumulator. The OUT instruction is used to move data from the accumulator to an I/O port. The IN & OUT instructions are used only on microprocessor, which use a separate address space for interfacing.
Description : List out the five categories of the 8085 instructions. Give examples of the instructions for each group.
Last Answer : • Data transfer group – MOV, MVI, LXI. • Arithmetic group – ADD, SUB, INR. • Logical group –ANA, XRA, CMP. • Branch group – JMP, JNZ, CALL. • Stack I/O and Machine control group – PUSH, POP, IN, HLT.
Description : Memory access in RISC architecture is limited to instructions a. CALL and RET b. PUSH and POP c. STA and LDA d. MOV and JMP
Last Answer : c. STA and LDA
Description : When a subroutine is called, the address of the instruction following the CALL instructions stored in/on the a. stack pointer b. accumulator c. program counter d. stack
Last Answer : d. stack
Description : The status that cannot be operated by direct instructions isa) Cy b) Z c) P d) AC
Last Answer : d) AC
Description : Computer instructions written with the use of English words instead of binary machine code is called a. Mnemonics b. Symbolic code c. Gray codes d. Opcode
Last Answer : b. Symbolic code
Description : Instructions and memory address are represented by a. Character code b. Binary codes c. Binary word d. Parity bit
Last Answer : b. Binary codes
Description : A computer program that translates one program instructions at a time into machine language is called a/an a. Interpreter b. CPU c. Compiler d. Simulator
Last Answer : a. Interpreter
Description : The process of starting a or restarting a computer system by loading instructions from a secondary storage device into the computer memory is called a. Duping b. Booting c. Padding d. CPS
Last Answer : b. Booting
Description : A microprocessor retries instructions from : a. Control memory b. Cache memory c. Main memory d. Virtual memory
Last Answer : c. Main memory
Description : Which of the following instruction is of logical instructions? i) CPL A ii) JC rel iii) DA A iv) ANL A, Rn v) RR A vi) CPL bit a) i, v b) v, iii, I c) iv, ii d) v, iii, ii
Last Answer : c) iv, i
Description : In 8087 coprocessor one of the following instructions is not valid a. FSIN b. FPTAN c. FIDIV d. FSQRT
Last Answer : a. FSIN
Description : IDIV and DIV instructions perform the same operations for? a) Unsigned number b) Signed number c) Signed number & Unsigned number d) none of above.
Last Answer : b) Signed number
Description : The advantage of memory mapped I/O over I/O mapped I/O is, a) Faster b) Many instructions supporting memory mapped I/O c) Require a bigger address decoder d) All the above
Last Answer : d) All the above
Description : Which of the following instructions is not available in 8085 microprocessor? (A) LDA 3850 (B) XTHL (C) push PSW (D) LDAXH
Last Answer : Which of the following instructions is not available in 8085 microprocessor? (A) LDA 3850 (B) XTHL (C) push PSW (D) LDAXH
Description : What is the latest write-once optical storage media? a. Digital paper b. Magneto-optical disk c. WORM disk d. CD-ROM disk
Last Answer : d. CD-ROM disk
Description : The latest PC keyboards use a circuit that senses the movement by the change in its capacitance, a. Capacitance keyboard b. Mechanical keyboard c. Qwerty keyboard d. Dvorak keyboard
Last Answer : a. Capacitance keyboard
Description : Fifth generation computer is also known as a. Knowledge information processing system b. Very large scale integration (VLSI) c. Both of above d. None of above
Last Answer : a. Knowledge information processing system
Description : What component of the computer keeps track of the address in memory of the programming instructions being executed?
Last Answer : The program counter.
Description : _is sequence of instructions is executed and repeated any no. of times in loop until logical condition is true: a. Iteration b. Repetition c Botha&b d. None of these
Last Answer : c Botha&b
Description : Each instruction is executed by set of micro operations termed as. a. Micro instructions b. Mini instructions c. Botha &b d. None of these
Last Answer : a. Micro instructions
Description : ..... is a set of Keywords, s symbols, and a system of rules for constructing statements by which humans can communicate the instructions to be executed by a computer... 1) A Computer Program 2) A Programming Language 3) An Assembler 4) Syntax
Last Answer : 2) A Programming Language
Description : ……………. are not machine instructions and therefore, Java interpreter generates machine code that can be directly executed by the machine that is running the Java program. A) Compiled Instructions B) Compiled code C) byte code D) Java mid code
Last Answer : C) byte code
Description : Suppose that the number of instructions executed between page faults is directly proportional to the number of page frames allocated to a program. If the available memory is doubled, the mean interval between page faults is also ... memory were available? (A) 60 sec (B) 30 sec (C) 45 sec (D) 10 sec
Last Answer : Answer: C Explanation: T = Ninstr x 1µs + 15,000 x 2,000 µs = 60s Ninstr x 1µs = 60,000,000 µs - 30,000,000 µs = 30,000,000 µs Ninstr = 30,000,000 The number of instruction ... doesn't mean that the program runs twice as fast as on the first system. Here, the performance increase is of 25%.
Description : In an 8085 microprocessor, the contents of the Accumulator, after the following instructions are executed will become XRA A MVI B, F0 H SUB B (A) 01 H (B) 0F H (C) F0 H (D) 10 H
Last Answer : In an 8085 microprocessor, the contents of the Accumulator, after the following instructions are executed will become XRA A MVI B, F0 H SUB B (A) 01 H (B) 0F H (C) F0 H (D) 10 H
Description : Intel Itanium processors are designed fora.Servers and personal computers b.Servers only c.Personal computers onlyd.Calculators
Last Answer : b.Servers only
Description : How can we make computers work faster? a. The fetch-execute cycle and pipelining b. The assembly c. Both A and B d. None of these
Last Answer : a. The fetch-execute cycle and pipelining
Description : Why 8087 is referred to as Coprocessor? i) Because 8087 is used in parallel with main processor in a system, rather than serving as a main processor itself. ii) Because 8087 is used in serial with main processor in a ... math computations. a) i & iii b) ii & iii c) iii only. d) i only.
Last Answer : c) iii only.
Description : The standard I/O is also called: a. Isolated I/O b. Parallel I/O c. both a and b d. none of these
Last Answer : a. Isolated I/O
Description : Period of fifth generation? a. 1974-1978 b. 1979-1980 c. 1981-1985 d. 1995-till date
Last Answer : d. 1995-till date
Description : How many bit microprocessor in the era marked beginning of fourth generation: a. 4 bit b. 8 bit c. 16 bit d. 32 bit
Last Answer : d. 32 bit
Description : The fourth generation of microprocessor came really as a soon boon to the_____: a. Computing environment b. Processing environment c. Hot environment d. All of these
Last Answer : a. Computing environment