Q.1
Which determines the number of operations per second?
  • Bandwidth
  • Word Length
  • Clock Speed
  • Operations Speed
Q.2
The __________ controls the flow of data and instructions within the computer.
  • control unit
  • register array
  • accumulator
  • ALU
Q.3
What is true about microprocessor?
  • Microprocessor is a controlling unit of a micro-computer
  • It is fabricated on a small chip capable of performing ALU (Arithmetic Logical Unit) operations
  • It also communicate with the other devices connected to it.
  • All of the above
Q.4
Why microcontrollers are not called general purpose computers?
  • because they have built in RAM and ROM
  • because they design to perform dedicated task
  • because they are cheap
  • because they consume low power
Q.5
What is the most appropriate criterion for choosing the right microcontroller of our choice?
  • speed
  • availability
  • ease with the product
  • all of the mentioned
Q.6
What is the file extension that is loaded in a microcontroller for executing any instruction?
  • .doc
  • .c
  • .txt
  • .hex
Q.7
Give the names of the buses present in a controller for transferring data from one place to another?
  • data bus, address bus
  • data bus
  • data bus, address bus, control bus
  • address bus
Q.8
Abbreviate CISC and RISC.
  • Complete Instruction Set Computer, Reduced Instruction Set Computer
  • Complex Instruction Set Computer, Reduced Instruction Set Computer
  • Complex Instruction Set Computer, Reliable Instruction Set Computer
  • Complete Instruction Set Computer, Reliable Instruction Set Computer
Q.9
How are the performance and the computer capability affected by increasing its internal bus width?
  • it increases and turns better
  • it decreases
  • remains the same
  • internal bus width doesn’t affect the performance in any way
Q.10
If we say microcontroller is 8-bit then here 8-bit denotes size of:
  • Data Bus
  • ALU
  • Control Bus
  • Address Bus
Q.11
What is the order decided by a processor or the CPU of a controller to execute an instruction?
  • decode,fetch,execute
  • execute,fetch,decode
  • fetch,execute,decode
  • fetch,decode,execute
Q.12
Unlike microprocessors, microcontrollers make use of batteries because they have:
  • high power dissipation
  • low power consumption
  • low voltage consumption
  • low current consumption
Q.13
A microcontroller at-least should consist of:
  • RAM, ROM, I/O ports and timers
  • CPU, RAM, I/O ports and timers
  • CPU, RAM, ROM, I/O ports and timers
  • CPU, ROM, I/O ports and timers
Q.14
What is the status of stack pointer for the execution of PUSH and POP operations ?
  • It gets post-decremented for PUSH & pre-incremented for POP
  • It gets pre-incremented for PUSH as well as POP
  • It gets pre-incremented for PUSH & post-decremented for POP
  • It gets post-decremented for PUSH as well as POP
Q.15
Priority interrupts of 8085a. TRAP b.RST 5. c.RST 7.d.RST 6.5 e.INTR
  • a,c,d,b,e
  • a,b,c,d,e
  • b,a,c,d,e
  • c,d,e,a,b
Q.16
How many address lines in a 4096*8 EPROM CHIP?
  • 12
  • 11
  • 15
  • 16
Q.17
What does the instruction XCHD A, @Ri signify during the data transfer in the program execution ?
  • Exchange of register with an accumulator
  • Exchange of direct byte with an accumulator
  • Exchange of low order digit indirect RAM with an accumulator
  • Exchange of indirect RAM with an accumulator
Q.18
Which one is NOT a Logical and Bit Manipulation instruction?
  • ANA B
  • ORA B
  • XRA B
  • DCR B
Q.19
Instruction set hasopcodes(eg.MOV,MVI) and ____number of instructions
  • 200
  • 246
  • 250
  • 300
Q.20
MOV B, A is a ________ addressing mode.
  • register
  • register indirect
  • Immediate
  • Direct
0 h : 0 m : 1 s