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Right answer is (d) Arch LINUX, Debain, and Fedora Remix

For explanation: These all are the DISTRIBUTORS that have Linux OPERATING system which has default GUI for Fedora as Xfce, Mate, None-depends on spin.

The CORRECT answer is (a) USB connection

Easiest explanation: The unit USES a Micro USB connection to power itself (only the power pins are connected so it will not transfer data over the connection). A standard modern phone charger with a micro USB CONNECTOR will do, but NEEDS at least 700 mA at 5 volts.

Correct option is (a) ATMEGA328P

To ELABORATE: ATmega328p is a microcontroller which is 32KB of flash ROM and 8-bit microcontroller.

The correct answer is (a) True

To explain I WOULD say: Each peripheral device has one interrupt line connected to the Vectored Interrupt CONTROLLER, but may have SEVERAL internal interrupt flags. Individual interrupt flags may ALSO REPRESENT more than one interrupt source.

Correct option is (B) ARMv3

The best explanation: The original ARM7 was based on the EARLIER ARM6 design and used the same ARM3 instruction set.

Right choice is (d) Memory interfacing

For explanation I would say: External Access input is employed to PERMIT or PROHIBIT outer memory interfacing. If there is no outer memory needed, this PIN is dragged by LINKING it to Vcc.

The correct answer is (d) 5

The explanation: An interrupt is an external or internal event that disturbs the microcontroller to inform if that needs its SERVICES. There are 5 INTERRUPTS :

TIMER 0 overflow interrupt

Timer 1 overflow interrupt

External Interrupt 0

External Interrupt 1

Serial port events.

Right option is (b) 1.2GHz

For explanation I would say: The first is a NEXT generation Quad CORE Broadcom BCM2837 64-bit ARMv8 PROCESSOR, making the processor speed increase from 900MHz on the Pi 2 to up to 1.2GHz on the Pi 3.

Right option is (C) Setup() and loop()

The explanation: Setup() is CALLED once in the program when a SKETCH starts after power-up. It is used to initialixe variables, INPUT and output pin modes, and other libraries needed in the sketch.

Loop() is used after setup() been called, function loop() is executed repeatedly in the MAIN program. It controls the board until the board is powered off or is reset.

Right CHOICE is (b) Linear

Easiest explanation: PIPELINE is linear, which means that in SIMPLE data processing processor EXECUTES one instruction in SINGLE clock cycle which while individual instruction takes three clock cycles.

Right OPTION is (a) 64-bit

To elaborate: The first is a next GENERATION Quad Core Broadcom BCM2837 64-bit ARMv8 PROCESSOR, MAKING the processor speed increase from 900MHz on the Pi 2 to up to 1.2GHz on the Pi 3.

The CORRECT choice is (a) Optiboot bootloader

Explanation: The optiboot bootloader will take 512 bytes, LEAVING 32256 bytes for application code. Due to its small SIZE larger up-loadable sketch size is achieved.

Correct answer is (d) 8Kb

To elaborate: The ARM710T is a general PURPOSE 32-bit microprocessor with 8Kb cache, enlarged write buffer and MEMORY management unit combined in a SINGLE chip.

The CORRECT option is (a) 32-bit

Best explanation: The ARM7EJ-s processor has a Von Neumann architecture. This FEATURE is a SINGLE 32-bit data BUS that carries both instructions and data. Only load, store, and swap instructions can access data from memory. Data can be 8- bit.

Right answer is (a) 16-bit instruction SET

To ELABORATE: ARM introduced the Thumb 16-bit instruction set providing improved code density compared to previous designs. The most WIDELY used ARM7 designs implement the ARMv4T ARCHITECTURE, but some implement ARM3 or ARMv5TEJ.

Right answer is (b) Address of the next instruction

Best EXPLANATION: POINTS to the address of the next instruction to be executed from ROM. It is 16 bit register means the 8051 can access program address from 0000H to FFFFH. Total 64KB of CODE.

The correct answer is (d) SPILT timer mode

The explanation is: Mode 3 is ALSO known as a split timer mode. Timer 0 and 1 may be programmed to be in mode 0, 1 and 2 independently of similar mode for other time.

The correct answer is (b) 4 ports

To elaborate: It has 4 ports with port0 act as I/O port and also multiplexing of ADDRESS and data BUS. Port1act as I/O port. Port 2 act as I/O and also like address LINES. Port 3 act as I/O and also for external peripherals.

Correct ANSWER is (C) 4

Easy explanation: In Raspberry Pi3 there is an upgraded switched power source that goes up to 2.5 AMPS instead of just 2 Amps, allowing PI to power even more POWERFUL devices over USB ports.

The CORRECT answer is (d) Raspberry Pi Zero

Easiest explanation: All the 3 has an inbuilt WIFI in which all of them WORKS on 802.11 N. For Raspberry Pi Zero an external ESP2866 should be connected.

Correct choice is (c) Pi

Easiest explanation: Linux users. USER management in RASPBERRY is done on the command line. The default user is Pi, and the password is raspberry. You can add users and CHANGE each user’s password.

The correct answer is (d) 32-bit RISC

For explanation I would SAY: ARM7 is a GROUP 32-bit RISC ARM processor cores LICENSED by ARM HOLDINGS for microcontroller USE.

The correct answer is (B) 16-bit timer mode, 16-bit timer/counter THX and TLx are cascaded, no prescalar

The BEST explanation: It is a 16-bit timer; THEREFORE it allows value from 0000 to FFFFH to br loaded into the timer’s register TL and TH. After TH and TL are loaded with a 16-bit initial value, the timer must be started.

Right choice is (b) Harvard Architecture with CISC INSTRUCTION SET

The best I can explain: Harvard architecture has different memory spaces for both program memory and data memory with Complex Instruction Set Computer(CISC). The difference between CISC and RISC is RISC has few INSTRUCTIONS than CISC. Where as in Van- Neumann, program and data memory are same. Van- Neumann is also called as Princeton architecture.

The correct option is (a) 14

The explanation: It has 14 digital pins input/output pins of which 6 can be used as PWM output, 6 analog INPUTS, a USB connection, a POWER jack, a RESET button and more.

Correct answer is (d) Any Language

To elaborate: A program for Arduino can be WRITTEN in any programming language for a compiler that PRODUCES binary MACHINE CODE for the target processor.

The CORRECT OPTION is (a) True

Easiest explanation: The 8051 has an on CHIP oscillator but requires an EXTERNAL oscillator clock to run it. Most often a quartz crystal oscillator is connected to inputs XTAL1 and XTAL2.

Correct option is (d) Leonardo

For explanation: The LEONARD is ARDUINO’s first development board to USE one microcontroller with built-in USB. This means that it can be cheaper and simple, And also, code libraries are AVAILABLE which allow the board to EMULATE a computer keyboard etc.

Right option is (b) SPEED and Port_Names

For EXPLANATION: Port_Name: Linux automatically assigns DIFFERENT names for different types of SERIAL connectors. For Standard Serial PORT: ttyS0 … ttySn

USB Serial Port Adapter: ttyUSB0 … ttyUSBn

Speed: 115200.

The correct OPTION is (a) True

Explanation: A frequency SOURCE other than crustal oscillator is used. It can be a TTL oscillator, it should be connected to XTAL1 and XTAL2 id left UNCONNECTED.

Correct ANSWER is (a) External Interrupts

Easiest explanation: The AVR7 processor wakes up from POWER down mode VIA external interrupt or BOD.

The correct answer is (b) 3-Stage

The best I can explain: A 3-stage PIPELINING is used, so instructions are EXECUTED in THREE stages: Fetch, DECODE, EXECUTE.

The correct choice is (b) False

To elaborate: It achieve CUSTOM design goals, such as HIGHER CLOCK speed, very low power consumption, instruction set extension, optimization for size, debug SUPPORT, etc.

Right option is (c) BWAIT

The explanation: BWAIT pin can be used to EXTEND MEMORY ACCESS in WHOLE cycle increments. BWAIT is driven by the selected slave during the low phase of BCLK.

Correct answer is (d) FAST interrupt request, Non vectored interrupt request and Non-vectored IQR

Best explanation: The vectored Interrupt controller accepts all the interrupts request INPUTS and CATEGORIZES them as Fast Interrupt Request, Vectored Interrupt Request, and Non Vectored IQR as defined by programmable settings. The programmable ASSIGNMENT scheme means that priorities of interrupts from the various peripherals can be dynamically assigned and adjusted.

The correct choice is (a) When CARRY is GENERATED from D3 to D4

To elaborate: When carry is generated from D3 to D4, it is SET to 1, it is used in BCD ARITHMETIC.

Correct choice is (b) BTRAN

For explanation: The signal BTAN[1:0] is placed by one BUS cycle. This pipelining should be taken into ACCOUNT when these SIGNALS are being decoded. The value of BTRAN[1:0] indicates WHETHER the next bus cycle is a DATA cycle or an address cycle.

The CORRECT option is (C) Both big and little Endian

The explanation is: Big Endian configuration, when BIGEND signal is HIGH the PROCESSOR TREATS BYTES in memory as being in Big Endian format. When it is LOW memory is treated as little Endian.

Correct ANSWER is (c) 37 REGISTERS(31 GPR and 6 SPR)

The EXPLANATION: ARM7TDMI has 37 registers(31 GPR and 6 SPR). All these designs use a Von Neumann ARCHITECTURE, thus the few versions comprising a cache do not SEPARATE data and instruction caches.

The CORRECT OPTION is (a) TMOD

The best I can EXPLAIN: In the TMOD register, lower 4 bits are set for timer0 and the upper 4 bits are set ASIDE for TIMER1. In each case, the lower 2 bits are used to set the timer mode and upper 2 bits to specify the operation.

Right choice is (c) 1 cycles

Explanation: When power is turned on, the circuit holds the RST PIN HIGH for an amount of TIME that depends on the capacitor value and the rate at which it CHANGES. To ensure a valid reset the RST pin must be held high long enough to allow the oscillator to start up plus two machine cycles.

The CORRECT CHOICE is (a) True

The BEST explanation: The RPi has no internal storage or built-in OPERATING system it requires an SD-card that is set up to boot the RPi.

The correct option is (B) 361.68us

Easiest EXPLANATION: Machine cycle = No.of cycles/frequency

Time = 1/frequency

Time(ns) = 1/11.0592MHz

= 90.42ns

Machine cycles = 12*90.42

= 1.085us.

The correct choice is (B) False

The explanation: RAM is used for storing DATA storage and ROM is used for storing program memory.

Correct option is (b) False

To EXPLAIN I would say: The RPi can be used without additional hardware (EXCEPT perhaps a power supply of some KIND), it won’t be MUCH use as a general computer. As with any normal PC, it is LIKELY you need some additional hardware.