IO and Memory Interfacing – 1 – 1

1. Permanent data and instructions storing memory is :

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

ANSWER

EXPLANATION

2. ……………. memory chips are said to be volatile.

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

ANSWER

EXPLANATION

3. EPROM is erased by using :

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

ANSWER

EXPLANATION

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 having 16-bit addresses

ANSWER

EXPLANATION

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

EXPLANATION

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