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Computer Science
1000 Microcontroller
Quiz 1
Solution
Q.1.
Which of the following should a microcontroller at-least should consist of?
a) CPU, ROM, I/O ports, and timers
b) RAM, ROM, I/O ports, and timers
c) CPU, RAM, I/O ports, and timers
d) CPU, RAM, ROM, I/O ports, and timers
Q.2.
Which of the following buses are present in a microcontroller for transferring data from one place to another?
a) data bus only
b) data bus, address bus
c) address bus only
d) address bus, data bus, control bus
Q.3.
Which of the following file extension that is loaded in a microcontroller for executing any instruction?
a) .c
b) .txt
c) .hex
d) .doc
Q.4.
Which of the following architecture is followed by general-purpose microprocessors?
a) Von Neumann architecture
b) Harvard architecture
c) None of the mentioned
d) All of the mentioned
Q.5.
Which of the following microcontroller doesn’t match with its architecture below?
a) ARM7 – Von Neumann
b) Microchip PIC – Harvard
c) ARM9 – Harvard
d) MSP430 – Harvard
Q.6.
When the microcontroller executes some arithmetic operations, then the flag bits of which of the following register are affected?
a) DPTR
b) PSW
c) PC
d) SP
Q.7.
Which of the following steps have to be followed for interfacing a sensor to a microcontroller 8051?
a) interface sensor with ADC and ADC with 8051
b) interface sensor with the MAX232, send now to microcontroller, analyse the results
c) make the appropriate connections with the controller, ADC conversion, analyse the results
d) none of the mentioned
Q.8.
Which of the following devices are specifically being used for converting serial to parallel and from parallel to serial respectively?
a) microcontroller
b) timers
c) counters
d) registers
Q.9.
Which of the following pins of a microcontroller are directly connected with 8255?
a) WR
b) D0-D7
c) RD
d) All of the mentioned
Q.10.
Why are solid-state relays advantageous over electromechanical relays?
a) they need less voltage to be energised
b) they need zero voltage circuit
c) they need less current to be energised
d) none of the mentioned
Q.11.
The total space for the data memory available in the AVR-based microcontroller is?
a) FFFH
b) FH
c) FFFFH
d) FFFFFFFH
Q.12.
Which of the following is correct about BRNE instruction in avr microcontrollers?
a) it is used to jump to the given mentioned label when the zero flag accounts to 0
b) it is used to check the zero flag
c) it is used to compare two registers
d) it is used to compare two values
Q.13.
In AVR, which of the following registers are there for the I/O programming of ports?
a) PIN
b) DDR
c) PORT
d) All of the mentioned
Q.14.
What will happen in that condition, if an interrupt occurs while the microcontroller is serving any other interrupt?
a) the interrupt that is more priority in the interrupt vector table will be served first
b) both the interrupts will be handled simultaneously
c) the interrupt having low priority in the interrupt vector table will be served first
d) the interrupt which is being done first will be served first
Q.15.
Which of the following bits are used for setting the data frame size?
a) MPCM
b) DOR
c) U2X
d) UCSZ0
Q.16.
What is the internal Vref of an Atmegaseries?
a) 3.3V
b) 2.56V
c) 5V
d) all of the mentioned
Q.17.
Theis a ______ chip.
a) Digital to analog
b) Input/Output
c) Analog to Digital
d) None of the mentioned
Q.18.
Which of the following pins of a microcontroller are directly connected with 8255?
a) WR
b) D0-D7
c) RD
d) All of the mentioned
Q.19.
Doeshave handshaking capability?
a) depends on the conditions
b) cant be said
c) yes
d) no
Q.20.
Why are ULNnormally used between the microcontrollers and the relays?
a) for increasing the voltage capability required by a relay
b) for switching purposes
c) for increasing the current capability required by a relay
d) all of the mentioned
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