Description : Using 12 binary digits how many unique house addresses would be possible: a. 28=256 b. 212=4096 c. 216=65536 d. None of these
Last Answer : b. 212=4096
Description : 8253, 8257 c) 8257,8251 d)8251,825721.Consider the following set of 8085 instruction.MVI A,82HORA AJP DSPLYXRA ADSPLY:OUT PORT1HLT.The output at PORT1 isa) 00H b) FFH c) 92H d) 11H
Last Answer : a) 00H
Description : Pentium Pro can address _____ of memory: a. 4 GB b. 128 GB c. 256 GB d. 512 GB
Last Answer : a. 4 GB
Description : What is the number of levels required in a PCM system with S/N ratio of 40 dB? A. 64 B. 128 C. 256 D. 512
Last Answer : B. 128
Description : What do the following numbers have in sequence - 512-256-128-64?
Last Answer : It is a geometric progression with common ratio 0.5
Description : The midrange frequency range of sound is from A. 256 to 2048 Hz B. 2048 to 4096 Hz C. 512 to 2048 Hz D. 16 to 64 Hz
Last Answer : A. 256 to 2048 Hz
Description : Find the work done in an inductor of 4H when a current 8A is passed through it? a) 256 b) 128 c) 64 d) 512
Last Answer : b) 128
Description : a zero-order reaction for every 10° rise of temperature, the rate is doubled. If the temperature is increased from 10°C to 100°C, the rate of the reaction will become: (1) 128 times (2) 256 times (3) 512 times (4) 64 times
Last Answer : 512times
Description : 2. In a zero-order reaction for every 10° rise of temperature, the rate is doubled. If the temperature is increased from 10°C to 100°C, the rate of the reaction will become: (1) 128 times (2) 256 times (3) 512 times (4) 64 times
Last Answer : 256 times
Description : A typical personal computer used for business purposes would have… of RAM. a. 4 KB b. 16 K c. 64 K d. 256 K
Last Answer : d. 256 K
Description : EBCDIC can code up to how many different characters? a. 256 b. 16 c. 32 d. 64
Last Answer : a. 256
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 : A 16 bit address bus can generate___ addresses: a. 32767 b. 25652 c. 65536 d. none of these
Last Answer : c. 65536
Description : In 8085 microprocessor with memory mapped I/O which of the following is true? (1) I/O devices have 16 bit addresses (2) I/O devices are accessed during IN and OUT instructions (3) There can be a maximum of 256 input and 256 output devices (4) Logic operations can not be performed
Last Answer : I/O devices have 16 bit addresses.
Description : To put the 8085 microprocessor in the wait state(i) lower the-HOLD input (ii) lower the READY input (iii) raise the HOLD input(iv) raise the READY input
Last Answer : (ii) lower the READY input
Description : The method of accessing the I/O devices by repeatedly checking the status flags is_________ A. Memory-mapped I/O B. Program-controlled I/O C. I/O mapped D. None of the Above
Last Answer : B. Program-controlled I/O
Description : The method of accessing the I/O devices by repeatedly checking the status flags is ___________ a) Program-controlled I/O b) Memory-mapped I/O c) I/O mapped CSE-R17.BLOGSPOT.COM d) None of the mentioned
Last Answer : Program-controlled I/O
Description : 8096 has following features fill up the following, i) ____ Register file, ii) ____ I/O Ports iii) ____ architecture. a) 256 byte, five 8bit, register to register b) 256 byte, four 8bit, register ... c) 232 byte, five 8bit, register to register d) 232 byte, six 8 bit, register to register
Last Answer : c) 232 byte, five 8bit, register to register
Description : 8096 has following features fill up the following, i) ____ Register file, ii) ____ I/O Ports iii) ____ architecture. a) 256 byte, five 8bit, register to register b) 256 byte, four 8bit, ... c) 232 byte, five 8bit, register to register d) 232 byte, six 8 bit, register to register
Last Answer : d) 232 byte, six 8 bit, register to register
Description : The clock frequency of an 8085 microprocessor based system is 3 MHz. What should be the minimum pulse width of the INTR signal so that it is recognized successfully? A) 5.6 µs B) 5.7 µs C) 5.8 µs D) 5.9 µs
Last Answer : The clock frequency of an 8085 microprocessor based system is 3 MHz. What should be the minimum pulse width of the INTR signal so that it is recognized successfully? A) 5.6 µs B) 5.7 µs C) 5.8 µs D) 5.9 µs
Last Answer : In a 8085 microprocessor system with memory mapped I / 0, arithmetic and logic operations can be directly performed with the I / 0 data.
Description : When memory write or I/O read are active data is from the processor: a. Input b. Output c. Processor d. None of these
Last Answer : b. Output
Description : When memory read or I/O read are active data is to the processor : a. Input b. Output c. Processor d. None of these
Last Answer : a. Input
Description : 8096 has ___ general purpose I/O ports, Port 2 includes ______ of the following i) two quasi-bidirectional I/O lines ii) two output lines iii) four input lines iv) open drain outputs a) 4, i, iv b) 6, ii, iii c) 4, i,ii,iii d) 6, i, ii, iv
Last Answer : c) 4, i,ii,iii
Description : Accumulator based microprocessor example are: a. Intel 8085 b. Motorola 6809 c. A and B d. None of these
Last Answer : c. A and B
Description : A UDP datagram of _____ bytes is acceptable to all implementations A. 516 B. 1024 C. 256 D. 512
Last Answer : A. 516
Description : The rate of a chemical reaction is almost doubled for every 10°C rise in temperature. The rate will increase __________ times, if the temperature rises from 10 to 100°C. (A) 256 (B) 512 (C) 112 (D) 612
Last Answer : (B) 512
Description : What is the minimum bandwidth required for broadband connection: a) 128 kbps b) 256 kbps c) 512 kbps d) None of These
Last Answer : b) 256 kbps
Description : How much space will be required to store the bit map of a 1.3 GB disk with 512 bytes block size ? (A) 332.8 KB (B) 83.6 KB (C) 266.2 KB (D) 256.6 KB
Last Answer : (A) 332.8 KB
Description : Memory —mapped ___is used this is just another memory address. a. Input b. Output c. Both d. None
Last Answer : c. Both
Description : The advantage of I/O mapped devices to memory mapped is ___________ a) The former offers faster transfer of datab) The devices connected using I/O mapping have a bigger buffer space c) The devices have to deal with fewer address lines d) No advantage as such
Last Answer : The devices have to deal with fewer address lines
Description : In memory-mapped I/O ____________ a) The I/O devices and the memory share the same address space b) The I/O devices have a separate address space c) The memory and I/O devices have an associated address space d) A part of the memory is specifically set aside for the I/O operation
Last Answer : The I/O devices and the memory share the same address space
Description : Which is the main feature of 8085: a. Internal clock generator b. Internal system controller c. Higher clock frequency d. All of these
Last Answer : d. All of these
Description : An input /output device at which data enters or leaves a computer system is a. Keyboard b. Terminal c. Printer d. Plotter
Last Answer : b. Terminal
Description : The microcomputer system by using the ____device interface: a. Input b. Output c. Both A and B d. None of these
Last Answer : c. Both A and B
Description : The number of software interrupts in 8085 is ____ a) 5 b) 8
Last Answer : b) 8
Description : Then number of T-states of the instruction STA in 8085 microprocessor is A) 10 B) 12 C) 13 D) 16
Last Answer : Then number of T-states of the instruction STA in 8085 microprocessor is 13
Description : Which system communicates with the outside word via the I/O devices interfaced to it: a. Microprocessor b. Microcomputer c. Digital computer d. All of these
Last Answer : b. Microcomputer
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 : Calculator are based on______ microprocessor: a. 4 bit b. 16 bit c. 32 bit d. 64 bit
Last Answer : a. 4 bit
Description : ISA stands for: a. Instruct set area b. Instruction set architecture c. Both a and b d. None of these
Last Answer : b. Instruction set architecture
Description : The contents of accumulator before CMA instruction is A5H. Its content after instructionexecution isa) A5H b) 5AH
Last Answer : b) 5AH
Description : The status that cannot be operated by direct instructions isa) Cy b) Z c) P d) AC
Last Answer : d) AC
Description : The SP is of ___ wide register. And this may be defined anywhere in the ______. a) 8 byte, on-chip 128 byte RAM. b) 8 bit, on chip 256 byte RAM. c) 16 bit,
Last Answer : a) 8 byte, on-chip 128 byte RAM.
Description : Which of the following printing devices an output composed of a series of data? a. Wire matrix printer b. Band printer c. Wang image printer d. Both a and c
Last Answer : d. Both a and c
Description : A memory management system has 64 pages with 512 bytes page size. Physical memory consists of 32 page frames. Number of bits required in logical and physical address are respectively: (1) 14 and 15 (2) 14 and 29 (3) 15 and 14 (4) 16 and 32
Last Answer : (3) 15 and 14
Description : How many machine cycles does 8085 have, mention them
Last Answer : The 8085 have seven machine cycles. They are • Opcode fetch • Memory read • Memory write • I/O read • I/O write • Interrupt acknowledge • Bus idle
Description : How many interrupts does 8085 have, mention them
Last Answer : The 8085 has 5 interrupt signals; they are INTR, RST7.5, RST6.5, RST5.5 and TRAP
Description : Steps involved to fetch a byte in 8085
Last Answer : i. The PC places the 16-bit memory address on the address bus ii. The control unit sends the control signal RD to enable the memory chip iii. The byte from ... byte is placed in the instruction decoder of the microprocessor and the task is carried out according to the instruction