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How microcontrollers are programmed?

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Answer :

You have to understand that a microcontroller is chip enabled in it with a microprocessor.This microprocessor is the one that is programmed by writing a set of instruction( code) in it.The microcontroller is then able to function as required by the user.

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Description :

What are the different types of microcontrollers?

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Description :

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 

Answer :

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 

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Description :

The CPU of a system having 1 MIPS execution rate needs 4 machine cycles on an average for executing an instruction. The fifty percent of the cycles use memory bus. A memory read/write employs one machine cycle. For execution of the programs, the system utilizes 90 percent of the CPU time. For block data transfer, an IO device is ... transfer rate if programmed IO data transfer technique is used? (A) 500 Kbytes/sec (B) 2.2 Mbytes/sec (C) 125 Kbytes/sec (D) 250 Kbytes/sec

Answer :

(D) 250 Kbytes/sec

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Description :

After ‘PROM’ is programmed, we can only ____ the information. (1) read (2) write (3) read and write (4) remove

Answer :

read

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Description :

An Intelligent terminal (1) has a microprocessor, but cannot be programmed by the user (2) can process small data processing jobs, with the use of a large CPU (3) interacts with the user in English (4) cannot take data from the user

Answer :

can process small data processing jobs, with the use of a large CPU 

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Description :

Compare features of PIC and AVR microcontrollers

Answer :

Parameters PIC AVR Bus width 8/16/32-bit 8/32-bit Communication Protocols UART, USART, LIN, CAN, Ethernet, SPI, I2C UART, USART, SPI, I2C, (special ... Average Atmel Popular Microcontrollers PIC18fXX8, PIC16f88X, PIC32MXX Atmega8, 16, 32, Arduino Community

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Description :

Microcontrollers often have  A) CPUs B) RAM  C) ROM  D) all of the above

Answer :

Microcontrollers often have   CPUs, RAM, ROM.

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Description :

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

Answer :

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

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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

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

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Description :

The register AX is formed by grouping ________  A. AH & AL B. BH & BL C. CH & CL D. DH & DL

Answer :

The register AX is formed by grouping AH & AL

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Description :

The IF is called as _________ A. initial flag B. indicate flag C. interrupt flag D. inter flag

Answer :

The IF is called as  interrupt flag

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Description :

The OF is called as _______ A. overflow flag B. overdue flag C. one flag D. over flag 

Answer :

The OF is called as overflow flag

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Description :

The SF is called as ________ A. service flag B. sign flag C. single flag D. condition flag

Answer :

The SF is called as sign flag

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Description :

The CF is known as ________ A. carry flag B. condition flag C. common flag D. single flag

Answer :

The CF is known as carry flag

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Description :

The 16 bit flag of 8086 microprocessor is responsible to indicate ___________ A. the condition of result of ALU operation B. the condition of memory C. the result of addition D. the result of subtraction 

Answer :

The 16 bit flag of 8086 microprocessor is responsible to indicate the condition of result of ALU operation

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Description :

The work of EU is ________ A. encoding B. decoding C. processing D. calculations 

Answer :

The work of EU is decoding 

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Description :

In 8086 microprocessor , the address bus is ________ bit wide A. 12 bit B. 10 bit C. 16 bit D. 20 bit

Answer :

In 8086 microprocessor, the address bus is 20 bit

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Description :

The microprocessor can read/write 16 bit data from or to ________ A. memory B. I /O device C. processor D. register

Answer :

The microprocessor can read/write 16 bit data from or to memory 

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Description :

The intel 8086 microprocessor is a _______ processor A. 8 bit B. 16 bit C. 32 bit D. 4 bit

Answer :

The intel 8086 microprocessor is a 16 bit processor 

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Description :

In 1960's texas institute invented ______ A. integrated circuits B. microprocessor C. vacuum tubes D. transistors

Answer :

Microprocesssor

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Description :

The first digital electronic computer was built in the year________  A. 1950 B. 1960 C. 1940 D. 1930

Answer :

The first digital electronic computer was built in the year 1940 

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Description :

The purpose of the microprocessor is to control ______  A. memory B. switches C. processing D. tasks

Answer :

The purpose of the microprocessor is to control memory 

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Description :

Microprocessor is the ______ of the computer and it perform all the computational tasks  A. main B. heart C. important D. simple

Answer :

Microprocessor is the heart of the computer and it performs all the computational tasks

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Description :

Microprocessor is a/an _______ circuit that functions as the CPU of the compute  A. electronic B. mechanic C. integrating D. processing

Answer :

Microprocessor is a/an electronic  circuit that functions as the CPU of the compute 

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Description :

A microprocessor is a _______ chip integrating all the functions of a CPU of a computer.  A. multiple B. single C. double D. triple

Answer :

A microprocessor is a single chip integrating all the functions of a CPU of a computer.

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Description :

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 

Answer :

B) 8-bits Data bus and 8-bits Address bus. 

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Description :

 In a 16-bit microprocessor, a single word is A) 16 bit data B) 32 bit data C) 8 bit data D) 64 bit data 

Answer :

 In a 16-bit microprocessor, a single word is 16 bit data

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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

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

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Description :

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

Answer :

Then number of T-states of the instruction STA in 8085 microprocessor is 13 

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Description :

In 8085, whenever a signal is received at TRAP terminal, its program execution is transferred to a subroutine on address A) 0000 H B) 002C H C) 0024 H D) 0004 H

Answer :

In 8085, whenever a signal is received at TRAP terminal, its program execution is transferred to a subroutine on address 0024 H

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Description :

What is the Power Supply specification for 8085AH microprocessor? A) Single +5V supply with 10% voltage margins B) Dual +5V supply with 10% voltage margins C) Single +10V supply with 5% voltage margins D) Dual +5V supply with 5% voltage margins 

Answer :

What is the Power Supply specification for 8085AH microprocessor? A) Single +5V supply with 10% voltage margins B) Dual +5V supply with 10% voltage margins C) Single +10V supply with 5% voltage margins D) Dual +5V supply with 5% voltage margins 

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Description :

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 

Answer :

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 

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Description :

The 8O85 assembly language instruction that stores the contents of H and L registers into the memory locations 2050H and 2051H, respectively, is: A) SPHL 2050H B) SPHL 2051H C) SHLD 2050H D) STAX 2050H

Answer :

The 8O85 assembly language instruction that stores the contents of H and L registers into the memory locations 2050H and 2051H, respectively, is: SHLD 2050H

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Description :

 In a microprocessor, the address of the next instruction to be executed, is stored in A) Stack pointer B) Address latch C) Program counter D) General purpose register

Answer :

 In a microprocessor, the address of the next instruction to be executed, is stored in Program counter

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Description :

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

Answer :

 In an 8085 microprocessor, after the execution of XRA A instruction the zero flag is set 

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Description :

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

Answer :

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 Sign status flag

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Description :

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

Answer :

8085 microprocessor has 5 individual flags during arithmetic and logic operations.

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Description :

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

Answer :

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 one

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Description :

In a microprocessor the service routine for a certain interrupt starts from a fixed location of memory which cannot be externally set but the interrupt can be delayed or rejected. Such an interrupt is 

Answer :

In a microprocessor the service routine for a certain interrupt starts from a fixed location of memory which cannot be externally set but the interrupt can be delayed or rejected. Such an interrupt is Maskable and vectored

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Description :

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

Answer :

When a program is being executed in an 8085 microprocessor, its Program Counter contains the memory address of the instruction that is to be executed next

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Description :

Chock Speed of which Intel microprocessor is 3 GHz?  a. Core 2 Duo b. Core 2 Quad c. Pentium 4 d. Pentium III 

Answer :

Chock Speed of which Intel microprocessor is 3 GHz?  a. Core 2 Duo b. Core 2 Quad c. Pentium 4 d. Pentium III 

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Description :

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.

Answer :

Intel's 8085 microprocessor chip contains seven 8 bit registers

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Description :

A disk has 500 bytes/sector,100 sectors / track, 20 heads and 1000 cylinders. Total capacity of disk is  (a) 1 GB (b) 100 MB (c) 10 MB (d) 10 GB

Answer :

A disk has 500 bytes/sector,100 sectors / track, 20 heads and 1000 cylinders. Total capacity of disk is 1 GB

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Description :

Suppose that the same clock signal is used to increment the microprogram counter and to load the control register. Which of the following assertion(s) is/are true?  1. Microinstruction execution time is at least two clock periods.  2. Microinstruction execution time can be overlapped with fetching the next microinstruction.  3. Unconditional branch microinstructions must necessarily take longer than other types.  (a) 1 only (b) 2 only (c) 1 and 3 (d) 2 and 3

Answer :

Suppose that the same clock signal is used to increment the microprogram counter and to load the control register. Which of the following assertion(s) is/are true?  1. Microinstruction execution time is at least two clock periods.  ... types.  (a) 1 only (b) 2 only (c) 1 and 3 (d) 2 and 3

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Description :

Some system architects do not find RISC instruction repertoire to be cost-effective because it  (a) result in large increase in programme size (b) result in complex structure of microcode (c) has been observed that an average compiler does not employ more than a limited subset of available instructions (d) results in complex decoding of opcode filed resulting in longer execution time

Answer :

Some system architects do not find RISC instruction repertoire to be cost-effective because it  (a) result in large increase in programme size (b) result in complex structure of ... available instructions (d) results in complex decoding of opcode filed resulting in longer execution time

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Description :

A stake machine pushes operands on a stack and evaluates binary operators by a pcs (i.e pop/compute/store) where the top two operands are popped computation is performed and the result is pushed onto stack. Evaluation of an expression (x* y) + (u* ν) by Reverse Polish notation in a stack machine needs  (a) 4 push and 3 pcs instructions (b) 6 push and 1 pcs instructions (c) 4 push and 1 pcs instructions (d) 5 push and 2 pcs instructions 

Answer :

A stake machine pushes operands on a stack and evaluates binary operators by a pcs (i.e pop/compute/store) where the top two operands are popped computation is performed and the result is pushed onto stack. ... 1 pcs instructions (c) 4 push and 1 pcs instructions (d) 5 push and 2 pcs instructions 

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Description :

A dot matrix printer takes 3 msec to point a character, and 1 msec for a space between two consecutive characters. If it prints 100 characters per line, its printing speed specifications in characters per second (cps) and time to print a line of characters are respectively  (a) 100 cps and 400 msec (b) 2500 cps and 0.04 sec (c) 250 cps and 40 msec (d) 250 cps and 0.4 sec

Answer :

A dot matrix printer takes 3 msec to point a character, and 1 msec for a space between two consecutive characters. If it prints 100 characters per line, its printing speed specifications in characters per second (cps) and time ... cps and 0.04 sec (c) 250 cps and 40 msec (d) 250 cps and 0.4 sec

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Description :

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

Answer :

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

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Description :

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 

Answer :

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 

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