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DIGITAL COMPUTER ELECTRONICS

Digital Computer Electronics
The _____ is ultraviolet-light-erasable and electrically programmable. This allows the user to erase and store until programs and data are perfected.

PROM
EPROM
RAM
None of these
ROM

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Digital Computer Electronics
The logic 1 in positive logic system is represented by:

higher voltage level
None of these
zero voltage
negative voltage
lower voltage level

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Digital Computer Electronics
Conversion of decimal number 9910 to it's binary number equivalent is

111 10002
None of these
11100012
11000112
1000112

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Digital Computer Electronics
The number of two-input NAND gates required to produce the two-input OR function is

None of these
3
1
4
2

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Digital Computer Electronics
A 2's-complement adder-subtracter can add or subtract binary numbers. Sign-magnitude numbers represent _____ decimal numbers, and 2's complements stand for _____ decimal numbers.

positive, negative
sign, hexa
hexa, sign
None of these
negative, positive

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