Fundamental of
Microcontroller and its Application (SE Elect-2015)
Assignment No-01
Total Marks: 30 Marks
UNIT 1
1
|
Explain clearly the differences
between Microcontroller and Microprocessor
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5
|
2
|
Draw and explain internal
structure of PORT 1 of 8051microcontroller
|
5
|
3
|
With
neat diagram explain internal and external data and program memory of 8051
microcontroller.
|
5
|
4
|
Explain the function of pains
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5
|
5
|
The
internal RAM memory of the 8051 is:
a.
32 bytes
b.
64 bytes
c.
128 bytes
d.
256 bytes
|
1
|
6
|
Bit-addressable
memory locations are:
a.
10H through 1FH
b.
20H through 2FH
c.
30H through 3FH
d.
40H through 4FH
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1
|
7
|
If the
__ pin is ___ , then we have the option of using the ____ ROM or EPROM
together with _____ memory and devices.
a.
EA, high, internal, external
b.
EA, low, internal, external
c.
EA, high, external, internal
d.
EA, low, external, internal
|
1
|
8
|
What
is the Address (SFR) for TCON, SCON, SBUF, PCON and PSW respectively?
a.
88H, 98H, 99H, 87H, 0D0H
b.
98H, 99H, 87H, 88H, 0D0H
c.
0D0H, 87H, 88H, 99H, 98H
d.
87H, 88H, 0D0H, 98H, 99H
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1
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9
|
A HIGH
on which pin resets the 8051 microcontroller?
a.
RESET
b.
RST
c.
PSEN
d.
RSET
|
1
|
10
|
When
the 8051 is reset and the EA line is LOW, the program counter points to the
first program instruction in the:
a.
internal code memory
b.
external code memory
c.
internal data memory
d.
external data memory
|
1
|
11
|
18H-1GH
is range for
a.
Bank 0
b.
Bank 1
c.
Bank 2
d.
Bank 3
|
1
|
12
|
External pull up registers are
connected to port 0 so as to
a.
Use port 0 as an i/p or an o/p, as it
has open drain o/p
b.
Configure port 0 as an i/p port
c.
Configure port 0 as an o/p port
d.
None of these
|
1
|
13
|
The time required for fetching,
decoding and execution for an instruction is called
a.
Machine cycle
b.
instruction cycle
c.
clock cycle
d.
none
|
1
|
14
|
The register
in the 8051 that is used to keep track of the memory address of the next
op-code to be run in the program is the:
a.
stack pointer
b.
instruction pointer
c.
accumulator
d.
program counter
|
1
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