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WorksheetsCS332_8051 Viva
Total questions: 15
Worksheet time: 8mins
For 8051, there are _____________ ports and ____________ ports are dual function ports.
4 and 3
3 and 2
4 and 2
4 and 1
The number of Timers in 8051 are
Three
Two
One
Four
The size of PC (Program Counter) of 8051 microcontroller is
16 bit
8 bit
32 bit
4 bit
Which is the multifunctional port of 8051 microcontroller?
Port 0
Port 3
Port 2
Port 1
In 8051, Timer 0 and Timer 1 are
8 bit & 16 bit registers
both 8 bit registers
both 16 bit registers
16 bit & 8 bit registers
How many bytes of bit addressable memory is present in 8051 based microcontrollers?
8 bytes
32 bytes
16 bytes
28 bytes
MOV A , # 0FH
INC A
A = ?
17
18
10
13
What kind of instructions usually affect the program counter?
Call & Jump
Call & Return
Push & Pop
Return & Jump
Number of register banks in 8051
8
7
4
10
Give the clock frequency of 8051.
5 MHz
12 MHz
8 MHz
None of the above
To function as a timer the C/T bit in TMOD register should be
0
1
Which is the auto reload mode for timer/counter in 8051?
Mode 0
Mode 1
Mode 2
Mode 3
Instruction cycle for MOV instruction in 8051
1
2
3
4
Instruction cycle for DJNZ instruction in 8051
1
2
3
4
How many I/O pins are there in 8051 microcontroller
8
16
32
40
