WorksheetsMicrocontroller 8051 6th Sem Section H
Total questions: 10
Worksheet time: 5mins
Internal RAM memory of 8051 is:
32 bytes
64 bytes
128 bytes
256 bytes
This program will be executed continuously
STAT:MOV A,# 01H
JNZ STAT
TRUE
FALSE
The 8051 has ............16 bit counter/timers
1
2
3
4
MOV A, @ R1 will:
copy R1 to the accumulator
copy the accumulator to R1
copy the contents of memory whose address is in R1 to the accumulator
copy the accumulator to the contents of memory whose address is in R1
The ADC0804 has ________ resolution.
4 bit
8 bit
32 bit
64 bit
Which control signal/s is/are generated by timing and control unit of 8051 microcontroller in order to access the off-chip devices apart from the internal timings?
ALE
PSEN
RD &WR
ALL the above
Which register bank is supposed to get selected if the values of register bank select bits RS1 & Rs0 are detected to be ‘1’ & ‘0’ respectively?
Bank 0
Bank 1
Bank 2
Bank 3
Which memory allow the execution of instructions till the address limit of 0FFFH especially when the External Access (EA) pin is held high?
Internal Program Memory
External Program Memory
None of above
Both a & b
8085 microprocessor is an 8-bit microprocessor designed by?
Dell
Intel
IBM
VAX
This signal indicates that another master is requesting the use of the address and data buses.
READY
HOLD
HLDA
INTA
