WorksheetsMicroprocessors
Total questions: 15
Worksheet time: 7mins
MOS stands for ____________________
Material Operating Semiconductor
Metal Oxide Semiconductor
Metal Operating Segment
None of the mentioned
In register address mode, the operand is stored in
8-bit general purpose register
16-bit general purpose register
si or di
all of the mentioned
The bus is available when the DMA controller receives the signal
HRQ
HLDA
DACK
All of the mentioned
The number of clock cycles required for an 8257 to complete a transfer is
2
4
8
NONE
The register of 8257 that can only be written in is
DMA address register
Terminal count register
Mode set register
Status register
All the functions of the ports of 8255 are achieved by programming the bits of an internal register called
data bus control
read logic control
control word register
none of the mentioned
Which of the following is not a Features of 8086?
It uses two stages of pipelining
It is available in 3 versions based on the frequency of operation
Fetch stage can prefetch up to 6 bytes of instructions
It has 512 vectored interrupts.
8086 can access up to?
512KB
1Mb
2Mb
256KB
. 8085 microprocessor is an 8-bit microprocessor designed by?
IBM
DELL
INTEL
MOTOROLA
In 8085, 16-bit address bus, which can address upto?
16
32
64
128
There are _______ general purpose registers in 8085 processor
5
6
7
8
Flag register is an 8-bit register having __________ 1-bit flip-flops.
3
4
5
6
This signal is used as the system clock for devices connected with the microprocessor.
X1, X2
CLK OUT
CLK IN
IO/M
Which of the following is true about Control and status signals?
These signals are used to identify the nature of operation.
There are 3 control signal and 3 status signals.
Three status signals are IO/M, S0 & S1.
All of the above
It is a tri-state, bi-directional, 8-bit buffer, which is used to interface the 8253/54 to the system data bus.
Read/Write Logic
Data Bus Buffer
system data bus
System Buffer
