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Exam 1 Review B
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Problem X1rB.1.
How many bits do you need to represent seven different values? Nine?
Twelve? Thirty?
You need 3 bits for seven values,
4 for nine or twelve,
and 5 for thirty values.
Problem X1rB.2.
How many bits are in a kilobyte of memory?
There are 8,192 bits in a kilobyte:
8 bits × 1,024 bytes = 8,192 bits
byte KB KB
Problem X1rB.3.
Perform each of the following conversions.
| a. |
100101(2) to decimal |
| b. |
53(10) to binary |
| a. |
100101(2)
is 37(10) |
| b. |
53(10) to binary
is 110101(2) |
Problem X1rB.4.
Perform each of the following conversions.
| a. | 101101(2) | to decimal |
| b. | 1010101(2) | to decimal |
| c. | 23(10) | to binary |
| d. | 95(10) | to binary |
| a. | 101101(2) | is 45(10) |
| b. | 1010101(2) | is 85(10) |
| c. | 23(10) | is 10111(2) |
| d. | 95(10) | is 1011111(2) |
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