IO and Memory Interfacing – Exercise – 1

IO and Memory Interfacing » Exercise – 1

1. Permanent data and instructions storing memory is :

(a) RAM chips
(b) ROM chips
(c) DRAM chips
(d) None of these

Answer
Answer : (b)
Explanation
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2. ……………. memory chips are said to be volatile.

(a) RAM chips
(b) ROM chips
(c) DRAM chips
(d) None of these

Answer
Answer : (a)
Explanation
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3. EPROM is erased by using :

(a) Infrared rays
(b) Ultraviolet rays
(c) 12 V electric pulse
(d) 24V electric pulse

Answer
Answer : (b)
Explanation
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4. Memory mapped I/O is a technique to :

(a) Interface a memory having 8-bit addresses
(b) Interface a memory having 16-bit addresses
(c) Interface an IO having 8-bit addresses
(d) Interface an IO having16-bit addresses

Answer
Answer : (d)
Explanation
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5. The advantage of memory mapped I/O over I/O mapped I/O is :

(a) Faster
(b) Many instructions supporting memory mapped I/O
(c) Require a bigger address decoder
(d) All of the above

Answer
Answer : (b)
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