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Digital Computer Electronics

Digital Computer Electronics
How many bits are required to encode all twenty six letters ten symbols, and ten numerals?

2
6
None of these
3
5

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Digital Computer Electronics
When an inverter is placed between both inputs of an SR flip-flop, the resulting flip-flop is

None of these
Master slave JK flip-flop
T flip-flop
JK flip-flop
D flip-flop

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Digital Computer Electronics
The output 0 and 1 levels for TTL logic family is approximately

0.9 and 1.75V
None of these
0.1 and 5 V
-1.75 and -0.9 V
0.6 and 3.5 V

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Digital Computer Electronics
If a microcomputer has a 64K memory, what are the hexadecimal notations for the first and last memory location?

0, 64
None of these
0000, FFFF
0000, EEEE
0000, 9999

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Digital Computer Electronics
The clock signals are used in sequential logic circuits

to synchronize events in various parts of a system
to tell how much time has elapsed since the system was turned on
None of these
to tell the time of the day
to carry serial data signals

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Digital Computer Electronics
The master slave JK flip-flop is effectively a combination of

two T flip-flops
a T flip-flop and a D flip-flop
an SR flip-flop and a T flip-flop
an SR flip-flop and a D flip-flop
None of these

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