Description : In 8255, under the I/O mode of operation we have __ modes. Under which mode will have the following features i) A 5 bit control port is available. ii) Three I/O lines are available at Port C. a) 3, Mode2 b) 2, Mode 2 c) 4, Mode 3 d) 3, Mode 2
Last Answer : a) 3, Mode2
Description : 8096 write-protected mode, no code can write to memory address between __. a) 2020 to 3FFFH b) 8000 to FFFFH c) 2000 to 3FFFH d) 2020 to 202FH 17. If the __ pin is ___ , then we have the option ... b) EA, low, internal, external c) EA, high, external, internal d) EA, low, external, internal
Last Answer : c) EA, high, external, internal
Description : 8096 write-protected mode, no code can write to memory address between __. a) 2020 to 3FFFH b) 8000 to FFFFH c) 2000 to 3FFFH d) 2020 to 202FH
Last Answer : c) 2000 to 3FFFH
Description : In 8096, mode ____ of serial port are ___ modes commonly used for ____ communications. a) 1, 8bit, single processor b) 0, 7bit, multiple microcontroller c) 2, 9 bit, multiple processors d) 3, 8 bit, multiple microcontroller
Last Answer : a) 1, 8bit, single processor
Last Answer : c) 2, 9 bit, multiple processors
Description : The ___ bit decides whether it is a system descriptor or code/data segment descriptor a) P b) S c) D d) G
Last Answer : a) P
Description : Virtual Mode Flag bit can be set using ____ instruction or any task switch operation only in the _____ mode a) IRET, Virtual b) POPF, Real c) IRET, protected d) POPF, protected
Last Answer : b) POPF, Real
Description : In 8096, CCB bit 3 is ____. a) write strobe mode select b) address valid strobe select c) bus width select d) Internal read control mode
Last Answer : c) bus width select
Last Answer : b) address valid strobe select
Description : The conditional branch instruction JNS performs the operations when if __ a) ZF =0 b) SF=0 c) PF=0 d) CF=0
Last Answer : b) SF=0
Description : If the __ pin is ___ , then we have the option of using the ____ ROM or EPROM together with _____ memory and devices. a) EA, high, internal, external b) EA, low, internal, external c) EA, high, external, internal d) EA, low, external, internal
Last Answer : a) EA, high, internal, external
Description : In serial communication modes, mode 1 the Baud rate = a) BR=2SMOD/32 * (Timer 0 over flow rate) b) BR=2SMOD/16 * (Timer 1 over flow rate) c) BR=2SMOD/16 * (Timer 0 over flow rate) d) BR=2SMOD/32 * (Timer 1 over flow rate)
Last Answer : b) BR=2SMOD/16 * (Timer 1 over flow rate)
Description : A___ on this pin indicates a memory operation: a. Low b. High c. Medium d. None of these
Last Answer : a. Low
Description : The least significant bit of the binary number, which is equivalent to any odd decimal number, is: a. 0 b. 1 c. 1 or 0 d. 3
Last Answer : a. 0
Description : Which bit of TMOD will exactly configure timer / counter as a timer or counter. i) TMOD.6 of C/T for timer 1 ii) TMOD.6 of C/T for timer 0 iii) TMOD.2 of C/T for timer 0 iv) TMOD.2 of C/T for timer 1 a) i, ii b) ii, iv c) i, iii d) iii, iv
Last Answer : a) i, ii
Description : Which of the following instruction is used to set bit port directly? a) SET P1.0 b) MOV P1.0, bit c) SETB P1.0 d) JB P1.0, bit
Last Answer : JB P1.0, bit
Description : Processors of all computers, whether micro, mini or mainframe must have a. ALU b. Primary Storage c. Control unit d. All of above
Last Answer : b. Primary Storage
Description : A memory that is capable of determining whether a given datum is contained in one of its address is a. ROM b. PROM c. CAM d. RAM
Last Answer : c. CAM
Description : RIM is used to check whether, ______ a) The write operation is done or not b) The interrupt is Masked or not c) a & b
Last Answer : b) The interrupt is Masked or not
Description : In 8086 microprocessor one of the following statements is not true.a)Coprocessor is interfaced in MAX mode b)Coprocessor is interfaced in MIN mode c)I/O can be interfaced in MAX / MIN moded)Supports pipelining
Last Answer : b)Coprocessor is interfaced in MIN mode
Description : The mode of DMA are: a. Single transfer b. Block transfer c. Burst –block transfer d. Repeated single transfer e. Repeated–block transfer f. Repeated Burst –block transfer g. All of these
Last Answer : g. All of these
Description : Which of the following statements on DRAM are correct? i) Page mode read operation is faster than RAS read. ii) RAS input remains active during column address strobe. iii) The row and column addresses are strobed into the ... RAS and CAS inputs respectively. a) i & iii b) i & ii c) all d) iii
Last Answer : d) iii
Description : In 8279, a scanned sensor matrix mode, if a sensor changes its state, the ___ line goes ____ to interrupt the CPU. a) CS, high b) A0, high c) IRQ, high d) STB, high
Last Answer : c) IRQ, high
Description : In 8279 Strobed input mode, the control line goes low. The data on return lines is strobed in the ____. a) FIFO byte by byte b) FILO byte by byte c) LIFO byte by byte d) LILO byte by byte.
Last Answer : a) FIFO byte by byte
Description : 8088 microprocessor differs with 8086 microprocessor in a) Data width on the output b) Address capability c) Support of coprocessor d) Support of MAX / MIN mode
Last Answer : a) Data width on the output
Description : In 8086 microprocessor one of the following statements is not true. a) Coprocessor is interfaced in MAX mode b) Coprocessor is interfaced in MIN mode c) I/O can be interfaced in MAX / MIN mode
Last Answer : b) Coprocessor is interfaced in MIN mode
Description : List the 16 – bit registers of 8085 microprocessor.
Last Answer : Stack pointer (SP) and Program counter (PC).
Description : Which is not the main feature of DEC Alpha: a. 64 Bit RISC processor b. Designed to replace 32 VAX(CISC) c. Seven stage split integer/floating point pipeline d. Variable Instruction length
Last Answer : d. Variable Instruction length
Description : Which is not the main architectural feature of Power PC: a. It is not based on RISC b. Superscalar implementation c. Both 32 & 64 Bit d. Paged Memory management architecture
Last Answer : a. It is not based on RISC
Description : Which processor provided 1 MB memory: a. 16-bit 8086 and 8088 b. 32-bit 8086 and 8088 c. 64-bit 8086 and 8088 d. 8-bit 8086 and 8088
Last Answer : a. 16-bit 8086 and 8088
Description : Which is 16 Bit microprocessor: a. 8088 b. 8086 c. 8085 d. All of these
Last Answer : d. All of these
Description : How many bit microprocessor developed by Intel: a. 4 bit b. 8 bit c. 32 bit d. 64 bit
Last Answer : b. 8 bit
Description : Calculator are based on______ microprocessor: a. 4 bit b. 16 bit c. 32 bit d. 64 bit
Last Answer : a. 4 bit
Description : How many bit microprocessor still survives in low-end application such as microwave ovens and small control system: a. 4 bit b. 16 bit c. 32 bit d. 64 bit
Description : The evolution of the 4 bit microprocessor ended when Intel released in: a. 4004 b. 8008 c. 40964 d. 4040
Last Answer : d. 4040
Description : How many bit MC6800 microprocessor: a. 4-bit b. 8-bit c. 16-bit d. 32-bit
Last Answer : b. 8-bit
Description : Motorola introduced 32 bit RISC processor called______: a. MC 88100 b. MC 81100 c. MC 80100 d. MC 81000
Last Answer : a. MC 88100
Description : Motorola introduced _____ processor: a. 2 bit-RISC b. 4 bit-RISC c. 8 bit-RISC d. 32 bit-RISC
Last Answer : d. 32 bit-RISC
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 : Third generation microprocessor is dominated by____ microprocessor: a. 8 bit b. 4 bit c. 16 bit d. 64 bit
Last Answer : c. 16 bit
Description : The beginning of very efficient____ microprocessor in second generation: a. 4-bit b. 8-bit c. 16-bit d. 64-bit
Description : The ascending order or a data Hierarchy is a. bit - bytes - fields - record - file - database b. bit - bytes - record - field - file - database c. bytes - bit- field - record - file - database d. bytes -bit - record - field - file - database
Last Answer : a. bit - bytes - fields - record - file - database
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 : Circuit A is a 1-bit adder; circuit B is a 1 bit multiplier. a. Circuit A has more gates than circuit B b. Circuit B has more gates than circuit A c. Circuit A has the same number of gates as circuit B
Last Answer : a. Circuit A has more gates than circuit
Description : For a memory with a 16-bit address space, the addressability is a. 16 bits b. 8 bits c. 2^16 bits d. Cannot be determined
Last Answer : d. Cannot be determined
Description : bit Microprocessor __________ a) Intel 4040 b) Pentium – I c) 8088 d) Motorala MC-6801
Last Answer : d) Motorala MC-6801
Description : A 32-bit address bus allows access to a memory of capacity(a) 64 Mb (b) 16 Mb (c) 1Gb (d) 4 Gb 2.Which processor structure is pipelined? a) all x80 processors b) all x85 processors c) all x86 processors
Last Answer : c) all x86 processors
Description : Which type of computers uses the 8-bit code called EBCDIC? a. Minicomputers b. Microcomputers c. Mainframe computers d. Super computer
Last Answer : c. Mainframe computers
Description : The original ASCII code used…bits of each byte, reserving that last bit for error checking a. 5 b. 6 c. 7 d. 8
Last Answer : c. 7