Exercise: Digital Electronics

Questions for: Digital Electronics

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: C
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The process of entering data into ROM is called
A:
writing
B:
burning
C:
decoding
D:
registering
Answer: B
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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: B
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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
A:
64 k
B:
16 k
C:
8 k
D:
4 k
Answer: A
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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: B
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