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Digital Computer Electronics

Digital Computer Electronics
Express -7 as 16-bit signed binary numbers.

1000 0000 0000 0111
0000 0000 0000 0111
None of these
0111 0000 0000 0000
0111 0000 0000 0001

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Digital Computer Electronics
The simplified form of the Boolean expression (X + Y + XY)(X + Z) is

X + YZ
XZ + Y
XY + YZ
None of these
X + Y + Z

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Digital Computer Electronics
The functional difference between SR flip-flop and JK flip-flop is that

None of these
JK flip-flop does not require external clock
JK flip-flop has a feed back path
JK flip-flop is faster than SR flip-flop
JK flip-flop accepts both inputs 1

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Digital Computer Electronics
What is the 2's-complement representation of -24 in a 16-bit microcomputer?

None of these
1111 1111 1110 1000
0001 0001 1111 0011
1111 1111 1110 0111
0000 0000 0001 1000

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Digital Computer Electronics
The dynamic race hazard problem occurs in

sequential circuits only
combinational circuits only
None of these
none of the combinational and sequential circuits
both combinational and sequential circuits

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Digital Computer Electronics
With a JK master-slave flip-flop the master is cocked when the clock is _____ and the slave is triggered when the clock is _____

set, race
None of these
race, no change
set, reset
high, low

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