Can you help by answering this question?

The signal x(t) = sin(t)/t is ...

16 views
in Electronics Engineering by
In an 8085 microprocessor, the contents of accumulator, after the following instructions are executed will become 

 XRA A 

 MVI B F0H 

 SUB B 

 (a) 01 H (b) 0F H (c) F0 H (d) 10 H

1 Answer

0 votes
by

In an 8085 microprocessor, the contents of accumulator, after the following instructions are executed will become 

 XRA A 

 MVI B F0H 

 SUB B 

 (a) 01 H (b) 0F H (c) F0 H (d) 10 H

Related questions

1 answer 53 views

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

asked May 18, 2018 in Microprocessors and Microcontrollers by Shimroz123
1 answer 20 views

Which of the following instructions is not available in 8085 microprocessor? (A) LDA 3850 (B) XTHL (C) push PSW (D) LDAXH

asked Apr 28, 2018 in Microprocessors and Microcontrollers by Shimroz123
1 answer 17 views

If the contents of an accumulator are Ex-ORed with itself and placed in the accumulator itself, then  A) Carry flag will be set B) The accumulator contains all 1’s C) The zero flag is set D) The accumulator contents are shifted left by one bit

asked May 20, 2018 in Digital Electronics by Shimroz123
1 answer 41 views

In an 8085 microprocessor, after the execution of XRA A instruction A) the carry flag is set B) the accumulator contains FFH C) the zero flag is set D) the accumulator contents are shifted left by one bit

asked Jun 4, 2018 in Microprocessors and Microcontrollers by Shimroz123
1 answer 13 views

The zero flag of 8085 microprocessor is to be set keeping the content of the accumulator unchanged. Which instruction is to be used?  (a) MOV A,A (b) ANI 00H (c) XRA A (d) CMP A

asked May 15, 2018 in Microprocessors and Microcontrollers by Shimroz123
1 answer 11 views

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

asked Apr 9, 2018 in Electronics Engineering by Shimroz123
0 answers 9 views

An example of a non-vectored interrupt in 8085 microprocessor is  A) INTR B) TRAP C) RST 5.5 D) RST 7.5

asked Apr 9, 2018 in Electronics Engineering by Shimroz123
0 answers 14 views

The Complement Accumulator (CMA) instruction of 8085 processor on execution affects a. Zero Flag b. Sign Flag c. Carry Flag d. None of the flags

asked Apr 12, 2018 in Electronics Engineering by Shimroz123
1 answer 17 views

In 8085 microprocessor, the value of the most significant bit of the result following the execution of any arithmetic of Boolean instruction is stored in the (1) Carry status flag (2) Auxiliary carry status flag (3) Sign status flag (4) Zero status flag

asked May 28, 2018 in Microprocessors and Microcontrollers by Shimroz123
1 answer 19 views

 What is the size of SP register in 8085 microprocessor? A) 16 bits B) 8 bits C) 64 bits D) 48 bits

asked Jun 18, 2018 in Electronics Engineering by Shimroz123
1 answer 85 views

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

asked Jun 18, 2018 in Microprocessors and Microcontrollers by Shimroz123
1 answer 13 views

The ALE line of an 8085 microprocessor is used to (A) latch the output of an I/O instruction into an external latch. (B) deactivate the chip-select signal from memory devices. (C) find the interrupt enable states of the TRAP interrupt. (D) latch the 8 bits of address lines AD7-AD0 into an external latch.

asked Apr 28, 2018 in Digital Electronics by Shimroz123
1 answer 8 views

When a program is being executed in an 8085 microprocessor, its Program Counter contains  (A) the number of instructions in the current program that have already been executed (B) the total number of instructions in the program being executed. (C) the memory address of the instruction that is being currently executed (D) the memory address of the instruction that is to be executed next

asked May 18, 2018 in Microprocessors and Microcontrollers by Shimroz123
1 answer 9 views

Consider the following program segment with 8085 microprocessor  LXI H 3600H  MOV A, M  HLT  The MOV instruction involves (a) indirect addressing (b) immediate addressing (c) implicit addressing (d) direct addressing

asked May 15, 2018 in Microprocessors and Microcontrollers by Shimroz123
1 answer 36 views

Then number of T-states of the instruction STA in 8085 microprocessor is A) 10 B) 12 C) 13 D) 16 

asked Jun 18, 2018 in Microprocessors and Microcontrollers by Shimroz123
1 answer 34 views

What is the size of memory which can be accessed by direct accessing in 8085 microprocessor? A) 64 kB B) 4 kB C) 128 kB D) 128 MB 

asked Jun 18, 2018 in Microprocessors and Microcontrollers by Shimroz123
1 answer 8 views

Which flag does not change by the execution of the instruction DCR B in 8085 microprocessor ?  (a) Parity (b) Carry (c) Zero (d) Sign

asked May 15, 2018 in Microprocessors and Microcontrollers by Shimroz123
1 answer 43 views

In the 8085A Microprocessor, arithmetic and logical operations are performed through which of the following? A) Stack B) ALU C) I/O D) Register 

asked Jun 18, 2018 in Microprocessors and Microcontrollers by Shimroz123
1 answer 82 views

The average time required to reach a storage location in the memory to read or retrieve the contents of memory is called as A) Turnaround time B) Latency time C) Access time D) Response time

asked Jun 18, 2018 in Electronics Engineering by Shimroz123
1 answer 44 views

In 8085 microprocessor, how many T-states does OPCODE FETCH machine cycle normally require (i.e., when HOLD and WAIT signals are NOT forced)? A) 4 to 6 B) 3 to 8 C) 2 to 3 D) 8 to 12 

asked Jun 18, 2018 in Microprocessors and Microcontrollers by Shimroz123
1 answer 8 views

Wait status can be achieved in 8085 microprocessor by : - a) TRAP b) DMA c) HOLD d) INTR

asked Apr 14, 2018 in Instrumentation and control by Shimroz123
0 answers 12 views

In a 8085 microprocessor system with memory mapped I/O  a. I/O devices have 8 bit address  b. I/O devices are accessed using IN and OUT instructions.  c. There can be maximum 256 input and 256 output devices  d. Arithmetic and logic operations can be directly performed with I/O data

asked Apr 9, 2018 in Microprocessors and Microcontrollers by Shimroz123
0 answers 203 views
asked Dec 31, 2018 by Vigneshwaran Marichamy
1 answer 33 views

Which signal of 8085 microprocessor is used to insert wait states ?   (a) Ready (b) ALE (c) HOLD (d) INTR

asked May 13, 2018 in Digital Electronics by Shimroz123
0 answers 15 views

Program status word of 8085 microprocessor consists of number of flags as (a) 3 (b) 2 (c) 5 (d) 1

asked Apr 14, 2018 in Electrical Engineering by Shimroz123
2 answers 70 views

The 8085 Microprocessor has A) 8-bits Data bus and 16-bits Address bus B) 8-bits Data bus and 8-bits Address bus C) 16-bits Data bus and 16-bits Address bus D) 32-bits Data bus and 8-bits Address bus 

asked Jun 18, 2018 in Microprocessors and Microcontrollers by Shimroz123
1 answer 6 views

The 8085 is a – microprocessor   1. 4 bit 2. 8 bit 3. 16 bit 4. 32 bit 

asked May 13, 2018 in Microprocessors and Microcontrollers by Shimroz123
0 answers 51 views

The 8085 microprocessor has a non-maskable interrupt as (a) RST 5.5 (b) RST 7.5 (c) INTR (d) TRAP

asked Apr 14, 2018 in Electrical Engineering by Shimroz123
1 answer 14 views

 In thermo-couple instruments, in which of the following is an emf caused if the junction of two wires of dissimilar metals is heated and the free or cold ends are connected to a milli-voltmeter? A) Kelvin effect B) Hot wire effect C) Seebeck effect D) Faraday effect 

asked Jun 17, 2018 in Electronics Engineering by Shimroz123
1 answer 8 views

Which of the following are true in the context of Manchester Coding Signaling ?  (A) It suppresses the DC component  (B) It suppresses the high frequency component  (C) Pulses are unit symbol wide  (D) Symbol “1” is represented by positive pulse

asked May 12, 2018 in Electronics Engineering by Shimroz123
1 answer 31 views

Which one of the following statements is correct? Digital modulation techniques are used in satellite communication systems since:  (1) They are easier to handle (2) Large bandwidth utilization is possible (3) They have a higher spectral efficiency (4) They are less prone to interference

asked Apr 9, 2018 in Electronics Engineering by Shimroz123
0 answers 61 views

The instructions for starting the computer are housed on  (1) Random Access Memory (2) CD-ROM (3) Read-only Memory chips (4) All of these 

asked Apr 11, 2018 in Computer Engineering by Shimroz123
1 answer 9 views

8085 microprocessor has ________ individual flags during arithmetic and logic operations.

asked May 24, 2018 in Microprocessors and Microcontrollers by Shimroz123
1 answer 5 views

Intel's 8085 microprocessor chip contains  (A) seven 8 bit registers (B) 8 seven bits registers (C) seven 7 bit registers (D) eight 8 bit registers.

asked May 17, 2018 in Microprocessors and Microcontrollers by Shimroz123
1 answer 19 views

To establish a communication between 8085 microprocessor and 8255 Programmable Peripheral Interface chip. the status of the chip select input would be  (a) TRISTATE (b) HIGH (b) LOW (d) DON’T CARE 

asked May 15, 2018 in Microprocessors and Microcontrollers by Shimroz123
0 answers 20 views

The following statements are made for FETs 1. In n -channel depletion mode MOS in the active region, the control voltage VGS is negative. 2. NMOS in depletion mode is cut off for VGS=O 3. NMOS in enhance mode is cut off for VGS=O 4. There is no path between source and drain in the enhancement mode Of these, the true statements are : a. 1 and 2 only b. 1 and 3 only c. 3 and 4 only d. 1, 3 and 4 only

asked Apr 12, 2018 in Electronics Engineering by Shimroz123
0 answers 42 views

The following statements are made for NMOS & PMOS 1. The carrier mobility in NMOS is higher 2. PMOS require less area than NMOS 3. NMOS circuits are smaller than PMOS 4. PMOS are faster in switching. Of these, the true statements are : a. 2 and 4 only b. 2 and 3 only c. 1 and 3 only d. 1, 2 and 3 only

asked Apr 12, 2018 in Electronics Engineering by Shimroz123
0 answers 15 views

The state of a process after it encounters an I/O instruction is __________.  (1) Ready (2) Blocked/Waiting (3) Idle (4) Running 

asked Apr 10, 2018 in Computer Engineering by Shimroz123
0 answers 11 views

Bandwidth of an RC coupled amplifier is 100 kHz. Two such amplifiers are connected in cascade.Resultant bandwidth(in kHz) is around  A) 200 B) 100 C) 60 D) 30

asked Apr 9, 2018 in Electronics Engineering by Shimroz123
1 answer 11 views

In an npn transistor, _____ are the minority carriers.   (a) Free electrons (b) Acceptor ions (c) Donor ions (d) Holes

asked May 13, 2018 in Electronics Engineering by Shimroz123
1 answer 18 views

The following is not an application of varactor diode:  a) Parametric amplifier b) Frequency tuner c) Voltage controlled oscillator d) Phase shifter

asked Jun 15, 2018 in Electronics Engineering by Shimroz123
1 answer 60 views

To read or write a complete word from / to the memory in 8086 microprocessor and if it is located at an even address, the number of Read or Write cycles required is

asked May 23, 2018 in Microprocessors and Microcontrollers by Shimroz123
1 answer 55 views

Which of the following are 3 byte instruction set ? (a) MV 1A, 32 H (b) JMP 2085 H (c) MOV C, A (d) ADD B 

asked May 26, 2018 in Electronics Engineering by Shimroz123
1 answer 29 views

Which of the following semiconductor materials is (are) used for manufacturing solar cells?  (1) Gallium arsenide (2) Indium arsenide (3) Cadmium sulfide (4) All of these

asked Apr 9, 2018 in Electronics Engineering by Shimroz123
0 answers 16 views

Which of the following statements with reference to a generic microprocessor is correct?  a. Instruction cycle time period is exactly equal to machine cycle time period  b. Instruction cycle time period is shorter than machine cycle time period   c. Machine cycle time period is shorter than instruction cycle time period  d. Instruction cycle time period is exactly half of machine cycle time period

asked Apr 9, 2018 in Microprocessors and Microcontrollers by Shimroz123
0 answers 15 views

In 8085 instruction SBBr takes  A) 2 cycles and 7T states B) 1 cycle and 4T states C) 5 cycles and 16T states D) 3 cycles and 9Tstates

asked Apr 9, 2018 in Electronics Engineering by Shimroz123
1 answer 18 views

EPROM contents can be erased by exposing it to  A) ultraviolet rays B) infrared rays C) burst of microwaves D) intense heat radiations

asked Apr 9, 2018 in Electronics Engineering by Shimroz123
1 answer 24 views

An A.C current is given by i=100sin100. It will achieve a value of 50 A after (1) 1/600 sec (2) 1/300 sec (3) 1/1800 sec (4) 1/900 sec 

asked Apr 11, 2018 in Electrical Engineering by Shimroz123

Welcome to electronics2electrical.com here you can ask questions related to electrical, electronics, mechanical, telecommunication, instrumentation, computer, mathematics, physics etc.
Be respectful to all the members. Do not copy and paste the answers from other websites which have copyright content. While asking question give full details about it.

Categories

Most popular tags

power motor dc circuit transformer voltage current used system phase resistance factor synchronous load ac energy induction electric generator series frequency between speed capacitor use electrical meter line difference control type mosfet transmission magnetic plant high single instrument bjt unit source advantages function diode and machine winding field define torque parallel amplifier supply shunt thyristor motors electricity arduino maximum time relay armature problem value on transformers types coil diagram state flow ratio material three formula starting direction theorem method emf operating efficiency digital wave microprocessor test instruments inductance loss measure operation connected signal low applications effect single-phase network temperature working constant losses different law wattmeter measuring compare controlled breaker drive device logic rc full switch flux wire resistivity disadvantages free of materials machines angle force converter conductor transistor gain open protection scr core measurement number bridge principle generators reactance circuits negative the friction iron loop short pole battery conservation steam resistors hysteresis computer using analog lines secondary station gate a rectifier inverter linear induced relays nuclear capacitance basic characteristics design direct work rotor electronics ammeter forces diesel damping rlc connection factors capacitors minimum insulation moving regulation running self systems air fault range main stability quality starter igbt eddy alternator ideal rl average 3-phase plants arc thermal error fuzzy biasing dielectric pressure balanced superposition errors copper rotation feedback impedance measured electronic electrons charge inductive transfer explain start off back curve over solar is three-phase tariff locomotive peak bias zener engineering commutator surge conductors rating universal potentiometer density permanent mechanical transducer capacity memory adc excitation two fuse pure harmonics application semiconductor inductor internal pmmc reaction welding resonance traction permeability breakers rms designed electromagnetic si generation brushes switching capacitive shaded rate 1 distribution resistor methods delta star oscillator reluctance simplification algebra 8085 boolean weston dynamometer insulating strength installation definition fuel heating earth units
...