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WorksheetsMicrocontroller
Total questions: 15
Worksheet time: 8mins
What is internal RAM memory of 8051 microcontroller?
32 bytes
64 bytes
128 bytes
256 bytes
8051 series has how many 16 bit registers?
2
1
3
0
Register that is used to hold the memory address of the next instruction to be executed is----------------
Program Memory
Program Counter
Control Unit
Instruction Decoder
Which register is used to store the output generated by ALU?
Special Function Register
Timer Register
Accumulator
Stack Pointer
When the microcontroller executes some arithmetic operations, then the flag bits of which register are affected?
PSW
SP
DPTR
PC
What kind of instructions usually affect the program counter?
Push & Pop
Call & Jump
Call & Return
Return & Jump
The 8051 microprocessor has ________ parallel I/O ports.
2
3
4
5
On power up, the 8051 uses which RAM locations for register R0- R7
00-2F
00-07
00-7F
00-0F
How many bytes of bit addressable memory is present in 8051 based microcontrollers?
8 bytes
32 bytes
16 bytes
64 bytes
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
What is the file extension that is loaded in a microcontroller for executing any instruction?
.doc
.c
.txt
.hex
What is the most appropriate criterion for choosing the right microcontroller of our choice?
speed
availability
ease with the product
all of the mentioned
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
Which architecture provides separate buses for program and data memory?
Harvard architecture
Von Neumann architecture
None of the mentioned
All of the mentioned
What is the meaning of the instruction MOV A,05H?
data 05H is stored in the accumulator
fifth bit of accumulator is set to one
address 05H is stored in the accumulator
none of the mentioned
