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Electronics and Communication Engineering - Microprocessors

Exercise : Microprocessors - Section 1
36.
In ALU 1C 74181 the addition and subtraction is in
2's complement
1's complement
binary
none of the above
Answer: Option
Explanation:

2's complement is universally used in computers.

37.
While selecting a memory chip the feature which should be examined is
capacity
ac characteristics
dc characteristics
all of the above
Answer: Option
Explanation:

All these characteristics are important.

38.
EEPROM permits
read operation only
read and byte erase operations
read, byte erase and byte write operations
read, byte erase, byte write and chip erase operations
Answer: Option
Explanation:

All the four are permitted.

39.
Which is not a valid Java variable
lot
c 1t
s $ 2
2 s $
Answer: Option
Explanation:

The first letter of variable name should be lower case.

40.
Which of the following is invalid in Basic?
A ** B + - C
A ** B - C
A * B - C
A * B - C ** D
Answer: Option
Explanation:

Two operators cannot exist together.

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