COMPUTER HARDWARE
COMPUTER MEMORY
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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64
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128
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256
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None of the above
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Detailed explanation-1: -A byte is an eight-bit, two’s complement integer that ranges from-128 to 127. Note that like all numeric data types in Java, a byte is signed. The maximum byte value is 127. 128, 129, and so on through 255 are not legal values for bytes.
Detailed explanation-2: -byte: The byte data type is an 8-bit signed two’s complement integer. It has a minimum value of-128 and a maximum value of 127 (inclusive).
Detailed explanation-3: -byte data type This is an example of a primitive data type. It is an 8-bit signed two’s complement integer. It stores whole numbers that lie between-128 to 127. A byte data type is helpful for saving memory in large amounts.
Detailed explanation-4: -This is because we have to represent the number 0, so inclusively 0-127 is the other 128 possibilities of our range. If we were only allowing positive values, such as an unsigned byte where negative numbers aren’t possible, the range would be 0-255, since these are 256 different values (including the 0).
Detailed explanation-5: -A byte is a group of 8 bits. A bit is the most basic unit and can be either 1 or 0. A byte is not just 8 values between 0 and 1, but 256 (28) different combinations (rather permutations) ranging from 00000000 via e.g. 01010101 to 11111111 . Thus, one byte can represent a decimal number between 0(00) and 255.