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Midterm Test #1A Answers
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- Ian! D. Allen - idallen@idallen.ca - www.idallen.com

Test #1A Written Answer Section - Points: 25  (10 of 15%)

Note: To help you check your answers, I may give you the sum of the
digits in the answer.  For example, if the answer is supposed to be
128.9 I may tell you that the "check" sum of digits is 20 (=1+2+8+9).

[Points: 1] Express the decimal prefix "tera" as a power of ten: 10**12

[Points: 1] Express the binary prefix "giga" as a power of two: 2**30

[Points: 2] Convert binary 010110010101011110111101111 to hexadecimal: 2cabdef

[Points: 2] Convert unsigned octal 377 to decimal: -> 11111111 -> 255

[Points: 2] Convert hexadecimal EEE5h to octal: 167345

[Points: 3] Convert the two's complement representation 16-bit
hexadecimal number EEE5h to decimal.  (Check: the sum of the
digits in the answer is 23 decimal): -> 111A -> 111B -> -4379

[Points: 2] Convert the two's complement representation 16-bit
hexadecimal number 111Ah to decimal.  (Check: the sum of the
digits in the answer is 22 decimal): 4378

[Points: 2] Convert the decimal fraction 0.5625 to binary: 0.1001

[Points: 2] Convert decimal 134 to unsigned 8-bit binary: 10000110

[Points: 3] Convert decimal -121 to two's complement 8-bit binary:
01111001 -> 10000110 -> 10000111  (135 unsigned)

[Points: 5] Convert 128.5625 to IEEE 754 single-precision
floating-point and express the result in hexadecimal. (Check:
the sum of the digits in the answer is 16 decimal): 43009000