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1

GATE CSE 1996

MCQ (Single Correct Answer)
A $$ROM$$ is used to store the table for multiplication of two $$8$$ bit unsigned integers. The size of $$ROM$$ required is
A
$$256 \times 16$$
B
$$64K \times 8$$
C
$$4K \times 16$$
D
$$64K \times 16$$
2

GATE CSE 1995

MCQ (Single Correct Answer)
A computer system has a $$4K$$ word cache organized in block set associative manner with $$4$$ blocks per set, $$64$$ words per block. The number of bits in the $$SET$$ and $$WORD$$ fields of the main memory address format is
A
$$15,40$$
B
$$6,4$$
C
$$7,2$$
D
$$4,6$$
3

GATE CSE 1995

Subjective
The capacity of a memory unit is defined by the number of words multiplied by the number of bits/word. How many separate address and data lines are needed for a memory of $$4K$$ $$ \times $$ $$16?$$

Answer

$$12$$ address lines and $$16$$ data lines.
4

GATE CSE 1995

Subjective
A $$ROM$$ is used to store a truth table for a binary multiplier unit that will multiply two $$4$$ bit numbers. The size of the $$ROM$$ (number of words $$ \times $$ number of bits) that is required to accommodate the truth table is $$M$$ words $$ \times $$ $$N$$ bits. Write the values of $$M$$ and $$N$$.

Answer

$$M=256$$ and $$N=8$$

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