1. For the binary number 1000, the weight of the column with the 1 is
a. 4
b. 6
c. 8
d. 10
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2. The 2’s complement of 1000 is
a. 0111
b. 1000
c. 1001
d. 1010
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3. The fractional binary number 0.11 has a decimal value of
a. ¼
b. ½
c. ¾
d. none of the above
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4. The hexadecimal number 2C has a decimal equivalent value of
a. 14
b. 44
c. 64
d. none of the above
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5. Assume that a floating point number is represented in binary. If the sign bit is 1, the
a. number is negative
b. number is positive
c. exponent is negative
d. exponent is positive
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6. When two positive signed numbers are added, the result may be larger that the size of the original numbers, creating overflow. This condition is indicated by
a. a change in the sign bit
b. a carry out of the sign position
c. a zero result
d. smoke
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7. The number 1010 in BCD is
a. equal to decimal eight
b. equal to decimal ten
c. equal to decimal twelve
d. invalid
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8. An example of an unweighted code is
a. binary
b. decimal
c. BCD
d. Gray code
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9. An example of an alphanumeric code is
a. hexadecimal
b. ASCII
c. BCD
d. CRC
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10. An example of an error detection method for transmitted data is the
a. parity check
b. CRC
c. both of the above
d. none of the above