Electronics and Communication Engineering - Digital Electronics
Exercise :: Digital Electronics - Section 10
16.
The expression Y (A, B, C) = ∑m (1, 3, 5, 6) is to realized using a multiplexer. Then
A. use 8 : 1 multiplexer and ground input lines 1, 3, 5, 6 B. use 8 : 1 multiplexer and ground input lines 0, 2, 4, 7 C. use 8 : 1 multiplexer and ground input lines 0, 1, 2, 3 D. use 8 : 1 multiplexer and ground input lines 4, 5, 6, 7
Answer: Option B
Explanation:
17.
A microprocessor with a 16 bit address bus is used in a linear memory selection configuration. Address bus lines are directly uses as chip selects of memory chips with 4 memory chips the maximum addressable memory space is
Answer: Option A
Explanation:
18.
An I/O processor control the flow of information between
A. cache memory and I/O devices B. main memory and I/O devices C. 1 Two I/O devices D. cache and main memories
Answer: Option B
Explanation:
19.
The process of entering data into ROM is called
A. writing B. burning C. decoding D. registering
Answer: Option B
Explanation:
20.
Which of the following conversion is incorrect?
A. 2048.0625 = 100000000000.00012 B. 100000011.10012 = 131.562510 C. 1011012 = 458 D. Hexadecimal B6C7 = 4679110
Answer: Option C
Explanation:
